Title：Blue Floating (青い浮遊)

Artwork：Naho Ito (イトウナホ)@nahoito̲at.y

She is an artist based in Kyoto, see back cover for the author details. / 京都を拠点にご活躍されているアーティストです、作者詳細は裏表紙をご覧ください。

Greetings from CEO
Our NewsLetter started since 2016 is now the 8th issue.
We were motivated by one of our customers in oversea who expressed curiosity to know what kind of activities
UNISOKU was currently engaged in.
The purpose of NewsLetter is to provide regular updates on UNISOKU activities, as well as a mix of content unrelated
to business reports, reflecting the intention of the editorial board, which is made up of UNISOKU employees.
We hope you enjoy the slightly different content in each issue.
2016年から制作を開始したこのNewsLetterは、
今回で8号目を迎えます。
海外のとあるお客様から「ユニソクが今、どんな活動をしているのかを知りたい」という声をいただいたことが制作のきっかけでした。
NewsLetterは弊社の活動を定期的にお知らせすることを目的としてスタートしましたが、弊社社員により構成された編集委員の遊び心で、事業報告に留まらない内容も織り交ぜながら制作されています。
毎号少しずつ異なる内容をお楽しみいただければ幸いです。

In 2022, though many of the shipments had been stagnant due to the global spread of COVID-19, they haveprogressed and reached a record-high. On the other hand, we sincerely apologize for the inconvenience caused toour customers, who have been waiting for delivery due to the global shortage of electronic components.
As for overseas visits, we and SPECS-TII Technology (Beijing) are continuously providing technical support in China,
but we apologize for the inconvenience caused by the limited number of employees and the quarantine restrictions.
We will continue to work on improving the situation by increasing our employees. We have resumed overseas visits,
except for China, from the end of 2021, deliveries and repairs that had been delayed for two years. Currently, ourpriority is to provide technical support. Although we are suspending to attend to exhibitions, we plan to resume themas needed.

2022年はCOVID-19の世界的蔓延によって停滞していた出荷が進み、過去最高の出荷量となりました。
しかしながら、一部の製品の入荷の遅れや想定外の部品の入手不足が発生し、いまだに納品をお待たせしているお客様にはご迷惑をおかけし、誠に申し訳ございません。
海外への訪問対応につきましては、中国では弊社やSPECS-TII Technology(Beijing)による技術サポートを継続していますが、人員に限りがあるな
か検疫により活動が制限されており、ご不便をおかけしております。今後人員の増強等を進めて改善に取り組んでまいります。
中国を除く海外への訪問は2021年末からすこしずつ再開し、2年間滞ってきた納品や修理を再開しはじめております。現在は納品や修理訪問などの技術サポートを優先しておこなっており、展示会への訪問参加は見合わせてきました。2023年には技術サポートのための海外訪問を本格的に再開させ、展示会への参加も随時再開する予定です。

In the past few years, we have released several new systems into the market,
including cryogen-free SPM, time-resolved STM, and transient absorption spectrometers with fluorescence lifetime function. In addition to these, we have also
developed customized products, convenient functions for our systems, and fully
automated helium liquefaction systems.
We have introduced some of them through the NewsLetters, but those are not all.
If you have any questions about modifications to your systems, measurements
you are considering, or any other problems you may have, please contact us. We
will continue to challenge ourselves to achieve your special measurement needs.

Stories of UNISOKU in 2022
Feb.

Apr.

The USM1800 (Cryogen-Free Low
Temperature UHV SPM) delivered for the
first time to China (Shanghai Jiao Tong
University).

May

A research paper on the USM1800
prototype system was published in
Review of Scientific Instruments.
USM1800プロトタイプ機論文がReview of Scientiﬁc Instruments誌に掲載

新製品 USM1800 ヘリウムフリー低温超高真空走査型プローブ顕微鏡の初出荷 (上海交通大学)

A new employee joined the
Optical Instruments department.

分光課に新入社員入社

Jun.

シンガポールへのUSM1600システムの初出荷(南洋理工大)A new employee joined the SPM department.

The USM1600 was delivered for the firsttime to Europe (University of Stuttgart).

欧州エリアにUSM1600システムの初出荷（シュトットガルド大学）

Aug.
The USM1600 was delivered for the firsttime to the USA (Oak Ridge National
Laboratory).

Nov.

We exhibited in person at the 10th AsBIC, thefirst international conference attended in 4 years.

第10回 AsBIC にて、国際会議としては４年ぶりに対面での出展を実施

PCT application was filed for the "AFM holder
with anti-vibration and vibration-isolation
mechanism”.

「防振除振機構付きAFMホルダー」
PCT出願

社員の活動風景 (Scenes of UNISOKU activities)

Corporate Philosophy 経営理念
UNISOKU contributes to the development of science and technology
by providing customers with measurement systems that meet their
exploration needs.

President and CEO Yutaka Miyatake代表取締役社長 宮武

01

優

The Photochemistry Discussion
Meeting 2022 (Corporate Exhibition)
was held as an on-site event for the firsttime in nearly three years.

対面開催として約3年振りの2022年光化学討論会で企業展示を実施

Research results using picoTAS/CoolSpeK (by Osaka University - Dr. Aizawa)
were published in Nature.

picoTAS/CoolSpeKを使用した研究成果(大阪大学-相澤博士)がNatureに掲載

新製品としましては、無冷媒SPM装置や時間分解STM装置、蛍光寿命機能付き過渡吸収分光装置などの販売を開始しました。
また、お客様のニーズを取り入れることにより既存装置に提案する便利な機能やカスタ
マイズ品、完全自動化されたヘリウム液化装置といったご紹介したい新技術が生まれてきています。
NewsLetterを通してそれらの一部をご紹介しておりますが、すべてではありません。
お使いの装置の改造やお客様がお考えの測定について、
また、お困りのことがあれば是非ご相談ください。
私たちはお客様の特別な計測の実現のために挑戦を続けます。

お客様の探究心に応える計測を提供し、お客様の成果を通じて、科学技術の発展に貢献する。

Sept.
岩谷が国際会議The 92nd IUVSTS & APSSS-4
において時間分解STM装置についてポスター発表

米国エリアにUSM1600システムの初出荷(オークリッジ国立研究所)

Oct.

株式会社モトヤマと共同開発したマイクロ波加熱ラマン分光装置のデモ実験受付開始

Dr.Iwaya presented a poster on thetime-resolved STM system at the 92nd
IUVSTS & APSSS-4.

The USM1600 was delivered for the firsttime to Singopore (Nanyang Technological
University).

生産技術グループに
新入社員入社We started accepting demonstration
experiments of the microwave heating
Raman spectrometer, which was jointly
developed with MOTOYAMA Co., Ltd.

Yutaka Miyatake
02

Dec.

Our "Time- and Spin-Resolved Scanning
Multi-Probe Microscopy" was certified by
JST A-STEP.
JST A-STEP「時間・スピン分解
走査マルチプローブ顕微鏡」
完了認定

A new employee joined the Sales
department.

営業部に新入社員入社

Announcement of the Startof On-Site SPM Experimental Service

Available Systems

来社 SPM 実験サービス開始のお知らせ
サービス内容Service Description

We offer high-end measurement systems that
customers can use as a paid service. Our systems
are permanently set up and ready for use, whether
in-person or online. We strive to provide the best
measurement environment to ensure optimal
performance.

弊社製品のハイエンド機を社内に常設し、有償でご利用いただき、来社やOnline接続での計測環境をご提供します。

Our service is intended for:ご利用対象

・Researchers who wish to evaluate their samples byconducting measurements with our systems.
・Those who need to perform measurements that cannot
be done with their own equipment.
・Customers who face challenges in installing oursystems due to limitations in their facilities or location.
・Those who are exploring the possibility of installing oursystems in their lab.

Features and Benefits

・Our engineers perform maintenance, which results in
optimized systems and fast initial measurements.
・You do not need to worry about arranging refrigerants
and other supplies necessary for operation; we takecare of everything.
・Some systems are available for online measurement
24hours a day.
・We provide measurement assistance, including
sample exchange.
・We quickly respond to necessary arrangements andimprovements that are identified during use.
・You can bring your own instruments for sample
preparation with prior consultation.
・This is not a joint research project, and 100% of theresults belong to the user. We do not provide analysis
methods or services.

・ご研究対象の試料の評価に弊社装置による計測を加えてみたい方
・お手持ちの装置ではできない測定をされたい方
・設置場所や設備の事情により弊社装置の導入が困難な方・装置の導入を検討されている方特徴および利点

・装置保守点検は弊社技術者が行い、最適化された装置で早期の成果を期待できます。
・冷媒などの運用に必要な物資手配のご心配は不要です。
・一部の機器での計測はOnlineで24時間利用に対応させる予定です。
・試料交換等の計測補助はお引き受けいたします。

ご利用いただける装置

超高真空時間分解マルチプローブ顕微鏡

UHV Time-Resolved
Multi-Probe Microscopy

利用受入れ中Available now

絶縁基板上の微小サンプルのキャリアダイナミクスを測定可能

Carrier dynamics measurementof micro samples
on insulating substrate

デモ実験条件Demo measurement conditions

温度: 77 K 又は 300 K
真空度: ~10-8 Pa
レーザー波長: 488, 532 nm
時間分解能: ~80 ps (532 nm),
~10 ns (488 nm)- Temperature: 77 K or 300 K- Pressure: ~10-8 Pa- Laser wavelength: 488, 532 nm- Temporal resolution: ~80 ps (532 nm),
~10 ns (488 nm)

40 mK 超高真空強磁場STM

40 mK UHV STM

1.75 T-1.75 T-7 T vector magnet
2023年11月
開始予定

Scheduled to startin November 2023

・ご利用中に判明する必要なアレンジ、改良に素早く対応いたします。
・試料準備に必要な機器はお持ち込みいただけます（要事前相談）。
*本サービスで得られたデータはお客様に帰属されます。
計測器ご利用サービスの為、弊社によるデータ解析サービスは原則として行いません。

USM1600
装置仕様
40 mK以下
ベクターマグネット操作
高周波STM測定
長時間dI/dV測定

Specifications- TSTM Head = 40 mK- Vector Magnet operation- RF-STM- Long-term dI/dV measurement

1.5 K超高真空光学アクセスSPM

1.5 K UHV SPM
with Optical Access

2023年11月
開始予定

Scheduled to startin November 2023
USM1200 JT
Specifications- TSTM Head = 1.5 K (when optical shutters close)- Compatible with AFM measurement- Optical access capabilities by inertial-driven lens stages- Time resolved STM with high spatial resolution- Shot noise measurement by integrated RydeenAmp

03

装置仕様
試料温度1.5 K以下（光学アクセス閉鎖時）
AFM対応 内部レンズ付き光学アクセス
高空間分解能時間分解STM
Rydeen Amp (内蔵高周波アンプ)によるショットノイズ測定

04

RydeenAmp

雷電アンプ

First RydeenAmp integrated with USM1300
operating in Prof. Ingmar Swart group (Utrecht Univ.)

2022年 製品開発 ニュース

Q factor ~740 @T = 0.3 K

ご興味のある方は、info@unisoku.co.jp にご連絡下さい。 If you’re interested, please contact us at info@unisoku.co.jp
時間分解STM

Bias(mV)

New product!
Power spectral density (V2/Hz)

7x10

Scientific Reports"Externally-triggerable opticalpump-probe scanning tunneling microscopy
with a time resolution of tens-picosecond"Sci. Rep. 13, 818 (2023).

Katsuya Iwaya*, Munenori Yokota, Hiroaki Hanada, Hiroyuki Mogi,
Shoji Yoshida, Osamu Takeuchi, Yutaka Miyatake, Hidemi Shigekawa**

1.1

-17

5
4
3
2

0

200 400 600

-20

0

20

0.9
0.8
0.7

0.6

1
0

-600 -400 -200

1.0

6

G2SItotal (A2/Hz)

Time-Resolved Scanning Tunneling Microscope

Shot noise measurement on Au(111) at T = 0.3 K

2.812

2.808

2.820

2.816

Frequency(MHz)

-60

-40

Current(nA)

4060

Time-resolved tunneling current of low-temperature grown GaAs

Helium Re-Liquefaction System Operated in UNISOKU

社内ヘリウム液化システム

Height: 2.5 m

Collaboration with Prof. Shigekawa group(Univ. of Tsukuba) and financially supported by JST♦ Nano-scale carrier dynamics measurementswith time resolution of 80 ps♦ Compact table-top optical system(Integration into an existing STM system is possible)♦ The design and performance of the prototype systempublished in Sci. Rep.

Gas bag (70 m³) fully expanded

After two days liquefaction

Deflated gas bag

700
600
500
400
300
200
100
0

0

5

10

15
20
Months25

30♦ Maximum production > 25 L/day!

♦ Total liquefied amount since May 2020: ~15,000 liters.

液体ヘリウムフリー低温SPM♦ Gas-purifier using liquid nitrogen enables long-time operation.

The design and performance of the prototype systempublished in Rev. Sci. Instrum.

♦ Automatic control of the purifier reduces maintenance work.

Review of
Scientific Instruments"Development of a near-5-Kelvin, cryogen-free,pulse-tube refrigerator-based scanning probe
microscope"
Rev. Sci. Instrum. 93, 043711 (2022).

Jun Kasai*, Tomoki Koyama, Munenori Yokota, and Katsuya Iwaya**Nc-AFM NaCl
atomic image at 6 K

マイクロ波加熱ラマン分光装置

Ex. Imine-synthesis reaction measurement♦ In-situ observation of chemical reactions

by selective microwave heating1720 cm-1♦ Collaboration with MOTOYAMA Co., Ltd.

Scan size 7 nm x 7 nm
Bias voltage: +5 mV
Tunnel current: 1 nA

05

Sample: NaCl (100)
AFM sensor: qPlus
amplitude: 200 pm
Frequency shift: -13 Hz

1651 cm-1
60 ℃

Demo measurements currently available(a)Raman intensity

STM Au(111)atomic image at 5.6 K

Microwave Heating Raman Spectrometer

Raman spectrometer(b)

Chemical
reaction

Wavenumber (cm-1)

Raman intensity

Cryogen-Free SPM (USM1800)

Liquefied amount (L/month)

Width: 11 m

Time (sec)(a) In situ Raman spectra of Imine synthesis reaction.
(b) Time-resolved Raman intensity of each peak (10 second intervals).

Microwave cavity resonator
06

Publication List in
論文の紹介

Publication Stats

in

2022

Nature1. Ordered and Tunable Majorana-Zero-Mode Lattice in Naturally Strained LiFeAs
M. Li et al., Nature 606, 890 (2022). USM1300
2. Evidence for Unconventional Superconductivity in Twisted Trilayer Graphene
H. Kim et al., Nature 606, 494 (2022). USM1300

2022

3. Discovery of Charge Density Wave in a Kagome Lattice Antiferromagnet
X. Teng et al., Nature 609, 490 (2022). USM1300
4. Delayed Fluorescence from Inverted Singlet and Triplet Excited States
N. Aizawa et al., Nature 609, 502 (2022). picoTAS

 Total number of publications using UNISOKU systems = 294 (252 in 2021)

Science Total impact factors ~2268 (2030 in 2021)
Corresponding to 45 Nature papers (41 in 2021)

1. Reconfigurable Perovskite Nickelate Electronics for Artificial Intelligence
H. Zhang et al., Science 375, 533 (2022). USM1400

 Impact factor per employee ~ 47 (~42 in 2021)
c.f. impact factor of Nature ~50

2. Spin-Selective Tunneling from Nanowires of the Candidate Topological Kondo Insulator SmB₆
A. Aishwarya et al., Science 377, 1218 (2022). USM1300

Nature Materials
Popular Research Fields

Num. of
Publications

Average
Impact Factor(Nanowire, 2D Superconductivity, 2D vdW, etc)

Thin Films Excluding TMDs

35

7.99

Transition Metal Dichalcogenides (TMDs)

29

12.63

Molecules

28

9.76

Topological Materials (Majorana, Weyl)

27

12.92

Graphene (Twisted Bilayer Graphene)

22
14

13.64

Kagome Materials

Evidence of a Room-temperature Quantum Spin Hall Edge State in a Higher-Order Topological Insulator
N. Shumiya et al., Nat. Mater. 21, 1111 (2022). USM1300

Nature Nanotechnology
Wavelike Electronic Energy Transfer in Donor- Acceptor Molecular Systems through Quantum Coherence
F. Kong et al., Nat. Nanotechnol. 17, 729 (2022). USM1400

Advanced Materials

15.63

1. Harnessing the Quantum Behavior of Spins on Surfaces
Y. Chen et al., Adv. Mater.DOI: 10.1002/adma.202107534 USM1300
2. Nontrivial Doping Evolution of Electronic Properties in Ising-Superconducting Alloys
W. Wan et al., Adv. Mater. 34, 2200492 (2022). USM1300
3. Catalytic Growth of Ultralong Graphene Nanoribbons on Insulating Substrates
B. Lyu et al., Adv. Mater. 34, 2200956 (2022). JT-SPM

Evidence for Unconventional Superconductivity in Twisted Trilayer Graphene

Kim et al., Nature 606, 494 (2022).

Product used: USM1300

Figure(a) Configuration of the STM experiment. (b) STM image of MATTG showing moiré lattices.
(c) dI/dV spectra taken near AAA site as a function of the gate voltage.
(d) U-shaped superconducting gap at VGate = -7.5 V (top) and V-shaped superconducting
gap at VGate = -9.1 V (bottom). (e) Superconducting gap size Δ as a function of VGate.
07

Magic-angle twisted trilayer graphene (MATTG)
is a moiré material that exhibits strong electron
correlations and unconventional
superconductivity. However, local
spectroscopic studies of this system haveremained elusive. Kim et al. (Nadj-Perge group,
California Institute of Technology) reported
spectroscopic signatures of two distinct
superconducting states in the doping range
spanning from two to three holes per moiré unit
cell. The evolution with doping is consistent
with a gate-tunable transition from a gapped toa nodal superconductor, which is theoreticallycompatible with a transition from a BCS
superconductor to a BEC superconductor witha nodal order parameter. Their results will
provide a further understanding ofsuperconductivity and correlated states ingraphene-based moiré structures beyond
twisted bilayers.

4. Observation of Superconducting Collective Modes from Competing Pairing Instabilities in Single-Layer NbSe₂
W. Wan et al., Adv. Mater. 34, 2206078 (2022). USM1300

Nature Sustainability
Harnessing Infrared Solar Energy with Plasmonic Energy Upconversion
Z. Lian et al., Nat. Sustain. 5, 1092 (2022). PK120

Nature Chemistry
Quantum Nanomagnets in on-Surface Metal-Free Porphyrin Chains
Y. Zhao et al., Nat. Chem. DOI: 10.1038/s41557-022-01061-5 JT-SPM

Nature Physics
1. Rotation Symmetry Breaking in the Normal State of a Kagome Superconductor KV₃Sb₅
H. Li et al., Nat. Phys. 18, 265 (2022). USM1300
2. Charge Order and Superconductivity in Kagome Materials
T. Neupert et al., Nat. Phys. 18, 137 (2022). USM1300
3. Manipulation of Dirac Band Curvature and Momentum-Dependent G-factor in a Kagome Magnet YMn₆Sn₆
H. Li et al., Nat. Phys. 18, 644 (2022). USM1300
4. Correlated Hofstadter Spectrum and Flavour Phase Diagram in Magic-Angle Twisted Bilayer Graphene
J. Yu et al., Nat. Phys. 18, 825 (2022). USM1300

08

Publication Listin

ACS Nano 2/2

2022

12. Atomistic Insight into the Epitaxial Growth Mechanism of Single-Crystal Two-Dimensional Transition-Metal
Dichalcogenides on Au(111) Substrate
D. Ding et al., ACS Nano 16, 17356 (2022). USM1500

Advanced Functional Materials

13. Arsenic Monolayers Formed by Zero-Dimensional Tetrahedral Clusters and One-Dimensional Armchair Nanochains
G. Liu et al., ACS Nano 16, 17087 (2022). USM1300

1. Bimetallic Synergy in Ultrafine Cocatalyst Alloy Nanoparticles for Efficient Photocatalytic Water Splitting
C. Pelicano et al., Adv. Func. Mater. 32, 2202987 (2022). CoolSpeK

14. Spatially Dependent Electronic Structures and Excitons in a Marginally Twisted Moiré Superlattice of Spiral WS₂
J. Peng et al., ACS Nano 16, 21600 (2022). USM1400

2. Eliminating the Reverse ISC Bottleneck of TADF through Excited State Engineering and Environment-Tuning
Toward State Resonance Leading to Mono-Exponential Sub-µs Decay.
High OLED External Quantum Efficiency Confirms Efficient Exciton Harvesting
H. Yersin et al., Adv. Func. Mater. 32, 2201772 (2022). USP-PSMM-NP

15. Epitaxial Growth of High-Quality Monolayer MoS₂ Single Crystals on Low-Symmetry Vicinal Au(101) Facets with Different Miller IndicesJ. Hu et al., ACS Nano 17, 312 (2022). USM1400

3. Selective Triplet–Singlet Förster-Resonance Energy Transfer for Bright Red Afterglow Emission
B. Sk et al., Adv. Func. Mater. DOI: 10.1002/adfm.202211604 picoTAS

Journal of the American Chemical Society
1. Controlling Localized Plasmons via an Atomistic Approach: Attainment of Site-Selective Activation inside a Single Molecule
S. Mahapatra et al., J. Am. Chem. Soc. 144, 2051 (2022). USM1400

ACS Nano 1/2
1. Manipulating the Electronic and Magnetic Properties of Coordinated Nickel Atoms in Metal-Organic Frameworks by Hydrogenation
B. Liu et al., ACS Nano 16, 2147 (2022). USM1300
2. Large-Gap Quantum Spin Hall State and Temperature-Induced Lifshitz Transition in Bi₄Br₄
M. Yang et al., ACS Nano 16, 3036 (2022). USM1400

2. Mimicking the High-Valent Heme-Oxo Mediated Indole Monooxygenation Reaction Landscape of Heme Enzymes
P. Mondal et al., J. Am. Chem. Soc. 144, 3843 (2022). CoolSpeK
3. Bright, Modular, and Switchable Near-Infrared II Emission from Compact Tetrathiafulvalene-Based Diradicaloid Complexes
L. McNamara et al., J. Am. Chem. Soc. 144, 16447 (2022). CoolSpeK
4. Controlling Diradical Character of Photogenerated Colored Isomers of Phenoxyl-Imidazolyl Radical Complexes
M. Nishijima et al., J. Am. Chem. Soc. 144, 17186 (2022). picoTAS

3. Planar Heterojunction of Ultrathin CrTe₃ and CrTe₂ van der Waals Magnet
R. Li et al., ACS Nano 16, 4348 (2022). USM1500
4. Two-Dimensional Superconductivity of Ca-Intercalated Graphene on SiC: Vital Role of the Interface Between Monolayer Grapheneand the Substrate
H. Toyama et al., ACS Nano 16, 3582 (2022). USM1300
5. Observation of Yu-Shiba-Rusinov States and Inelastic Tunneling Spectroscopy for Intramolecule Magnetic Exchange Interaction Energyof Terbium Phthalocyanine (TbPc) Species Adsorbed on Superconductor NbSe₂
S. Shahed et al., ACS Nano 16, 7651 (2022). USM1300

5. Aliphatic and Aromatic C-H Bond Oxidation by High-Valent Manganese(IV)-Hydroxo Species
Y. Lee et al., J. Am. Chem. Soc. 144, 20752 (2022). CoolSpeK
6. Preparation and Characterization of a Formally NiIV-Oxo Complex with a Triplet Ground State and Application in Oxidation Reactions
D. Karmalkar et al., J. Am. Chem. Soc. 144, 22698 (2022). CoolSpeK, RSP-601

6. Observation of Magnetism-Induced Topological Edge State in Antiferromagnetic Topological Insulator MnBi₄Te₇
H. Xu et al., ACS Nano 16, 9810 (2022). USM1600

Nature Communications 1/2

7. Manipulation of Spin Polarization in Boron-Substituted Graphene Nanoribbons
K. Sun et al., ACS Nano 16, 11244 (2022). USM1300

1. Spin Mapping of Intralayer Antiferromagnetism and Field-Induced Spin Reorientation in Monolayer CrTe₂
J. Xian et al., Nat. Commun. 13, 257 (2022). USM1500

8. On-Site Synthesis and Characterizations of Atomically-Thin Nickel Tellurides with Versatile Stoichiometric Phases through Self-Intercalation
S. Pan et al., ACS Nano 16, 11444 (2022). USM1400

2. Real-space Observation of Incommensurate Spin Density Wave and Coexisting Charge Density Wave on Cr(001) Surface
Y. Hu et al., Nat. Commun. 13, 445 (2022). USM1300

9. Confined Vacuum Resonances as Artificial Atoms with Tunable Lifetime
R. Rejali et al., ACS Nano 16, 11251 (2022). USM1300

3. Coexistence of Electron Whispering-Gallery Modes and Atomic Collapse States in Graphene/WSe₂ Heterostructure Quantum Dots
Q. Zheng et al., Nat. Commun. 13, 1597 (2022). USM1300, USM1400

10. Femtosecond Thermal and Nonthermal Hot Electron Tunneling inside a Photoexcited Tunnel Junction
N. Sabanes et al., ACS Nano 16, 14479 (2022). USM1400

4. Chemically Identifying Single Adatoms with Single-Bond Sensitivity during Oxidation Reactions of Borophene
L. Li et al., Nat. Commun. 13, 1796 (2022). USM1400

11. Joule Heating in Single-Molecule Point Contacts Studied by Tip-Enhanced Raman Spectroscopy
B. Cirera et al., ACS Nano 16, 16443 (2022). USM1400

Spin-Selective Tunneling from Nanowires of the Candidate Topological Kondo Insulator SmB6
Aishwarya et al., Science, 377, 1218 (2022).

Product used: USM1300

Figure(a) A SEM image of the SmB6 nanowire tip.
(b) Temperature-dependent STM image showing the disappearance of
antiferromagnetic stripes in Fe1.03Te.
(c) Contrast reversal of the antiferromagnetic stripes at opposite bias voltages
originating from the helical tunneling with SmB6 nanowire tip. T = 4.3 K.
(d) Line profile along dashed lines in (c).

09

Topological Kondo insulators (TKIs) are known to be ideal
topological systems where surface Dirac fermions naturally
dominate the density of states near the Fermi level due to thehybridization gap originating from localized f electrons andconduction electrons together with the strong spin-orbit
coupling. Aishwarya et al. (Madhavan group, University of
Illinois Urbana-Champaign) utilized a nanowire of the TKI
candidate SmB6 as an STM tip to image the stripe spin orderin the antiferromagnet Fe1.03Te (Néel temperature of ~50 K).
They showed the antiferromagnetic stripes become invisible
above 10 K, indicating the suppression of the topologicalsurface states of SmB6. They also demonstrated a contrast
reversal of the antiferromagnetic stripes at opposite bias
voltages, which is not observed using Cr tips, indicating theselection of the opposite spin channel in the tunneling current.
These results suggest that the SmB6 nanowires host the
topological surface states (TSS) near the Fermi level and may
be utilized for manipulating spin currents in spintronics. Theirtechnique of mounting functionalized nanowires on the STM
tip opens new avenues for studying various nanoscale
properties such as magnetism, superconductivity, and otheremergent excitations.

Wavelike Electronic Energy Transfer in Donor–acceptor Molecular Systems ThroughQuantum Coherence

Product used: USM1400

Kong et al., Nat. Nanotechnol. 17, 729-736 (2022).

Intermolecular energy transfer in a donor-acceptor system is aubiquitous photo-physical process and important forphotosynthesis and photovoltaics. However, direct real-spaceobservation of such quantum-coherent energy transfer has beenlacking. Kong et al., (Dong group, Univ. of Science andTechnology of China) built a donor-acceptor molecular model
system consisting of platinum phthalocyanine (PtPc) as a donor
and zinc phthalocyanine (ZnPc) as an acceptor on a silver
surface. They precisely controlled intermolecular separation andobserved the energy transfer process between molecules by ascanning tunneling luminescence technique. With decreasing
intermolecular distance, light emission peaks from the dimer ortrimer were found to be spatially delocalized, indicating that
exciton can travel coherently through the whole dimer/trimer as aquantum-mechanical wavepacket. The results give a new insight
into molecular-level energy transfer mechanisms, which will
provide comprehensive guidance to design a controlled artificial
device related to energy production or optoelectronics.
Figure(a) Experimental-setup.(b, c) STM image of PtPc and ZnPc dimer and its
spectroscopic image at the emission peak of the dimer.
(d, e) STM image of ZnPc-PtPc-ZnPc trimer and its spectroscopic imageat the emission peak of the trimer.
10

Publication List

in

2022

Nano Letters
1. Moiré-Enabled Topological Superconductivity
S. Kezilebieke et al., Nano Lett. 22, 328 (2022). USM1300

Nature Communications 2/2

2. Semiconductor–Metal Phase Transition and Emergent Charge Density Waves in 1T-ZrX₂ (X = Se, Te) at the Two-Dimensional Limit
M. Ren et al., Nano Lett. 22, 476 (2022). USM1500

5. Atomic-Scale Visualization of Chiral Charge Density Wave Superlattices and Their Reversible Switching
X. Song et al., Nat. Commun. 13, 1843 (2022). USM1300

3. Nanoscale Control of One-Dimensional Confined States in Strongly Correlated Homojunctions
Q. Zhang et al., Nano Lett. 22, 1190 (2022). USM1300

6. Inducing and Tuning Kondo Screening in a Narrow-Electronic-Band System
S. Shen et al., Nat. Commun. 13, 2156 (2022). USM1600

4. Evolution of Electronic Structure in Pristine and Rb-Reconstructed Surfaces of Kagome Metal RbV₃Sb₅
J. Yu et al., Nano Lett. 22, 918 (2022). USM1300

7. Chirality Locking Charge Density Waves in a Chiral Crystal
G. Li et al., Nat. Commun. 13, 2914 (2022). USM1600

5. Confinement-Engineered Superconductor to Correlated-Insulator Transition in a Van Der Waals Monolayer
S. Ganguli et al., Nano Lett. 22, 1845 (2022). USM1300

8. Evolution of Br⋯Brcontacts in Enantioselective Molecular Recognition during Chiral 2D Crystallization
Z. Yi et al., Nat. Commun. 13, 5850 (2022). USM1400

6. Charge Transfer-Mediated Dramatic Enhancement of Raman Scattering upon Molecular Point Contact Formation
B. Cirera et al., Nano Lett. 22, 2170 (2022). USM1400

9. Discovery of Conjoined Charge Density Waves in the Kagome Superconductor CsV₃Sb₅
H. Li et al., Nat. Commun. 13, 6348 (2022). USM1300

7. Fully Two-Dimensional Incommensurate Charge Modulation on the Pd-Terminated Polar Surface of PdCoO₂
P. Kong et al., Nano Lett. 22, 5635 (2022). USM1200

10. Spin-Orbital Yu-Shiba-Rusinovstates in Single Kondo Molecular Magnet
H. Xia et al., Nat. Commun. 13, 6388 (2022). USM1300

8. Tuning of the Valley Structures in Monolayer In₂Se₃/WSe₂ Heterostructures via Ferroelectricity
D. Huo et al., Nano Lett. 22, 7261 (2022). USM1400

Science Advances

9. Strong Coupling Superconductivity in Ca-Intercalated Bilayer Graphene on SiC
X. Wang et al., Nano Lett. 22, 7651 (2022). USM1300

1. Observation of Robust Zero-Energy State and Enhanced Superconducting Gap in a Trilayer Heterostructure of MnTe/Bi₂Te₃/Fe(Te, Se)
S. Ding et al., Sci. Adv. 8, eabq4578 (2022). USM1300

10. Fabrication and Imaging Monatomic Ni Kagome Lattice on Superconducting Pb(111)
Y. Lin et al., Nano Lett. 22, 8475 (2022). USM1300

2. Nanoscale Coherent Phonon Spectroscopy
S. Liu et al., Sci. Adv. 8, eabq5682 (2022). USM1400

11. Experimental Determination of a Single Atom Ground State Orbital through Hyperfine Anisotropy
L. Farinacci et al., Nano Lett. 22, 8470 (2022). USM1300
12. Visualizing Large Facet-Dependent Electronic Tuning in Monolayer WSe₂ on Au Surfaces
B. Zhu et al., Nano Lett. 22, 9630 (2022). USM1400

Nature Protocol
Synthesis of Cyclodextrin Derivatives for Enantiodifferentiating Photocyclodimerization of 2-Anthracenecarboxylate
X. Wei et al., Nat. Protoc. 17, 2494 (2022). CoolSpeK

Proc. Natl. Acad. Sci. USA
1. Long-lifetime Spin Excitations Near Domain Walls in 1T-TaS₂
A. Aishwarya et al., PNAS 119, e2121740119 (2022). USM1300

ACS Catalysis

2. Discrete Scale Invariance of the Quasi-Bound States at Atomic Vacancies in a Topological Material
Z. Shao et al., PNAS 119, e2204804119 (2022). USM1300

1. Cobalt-Catalyzed Hydrogenation Reactions Enabled by Ligand-Based Storage of Dihydrogen
S. Anferov et al., ACS Catal.12 , 9933 (2022). CoolSpeK

3. Correlation-Driven Electronic Nematicity in the Dirac Semimetal BaNiS₂
C. Butler et al., PNAS 119, e2212730119 (2022). USM1300

2. How Do the Axial and Equatorial Ligands Modulate the Reactivity of a Metal-Bound Terminal Oxidant?
An Answer from the Hypochlorite Adduct of Iron(III) Porphyrin
S. Yokota et al., ACS Catal.12, 10857 (2022). CoolSpeK

Chemically Identifying Single Adatoms with Single-Bond Sensitivity During Oxidation
Reactions of Borophene

Product used: USM1400

Li et al., Nat. Commun. 13, 1796 (2022).

Manipulation of Dirac Band Curvature and Momentum-Dependent g Factor
in a Kagome Magnet
Product used: USM1300

Li et al., Nat. Phys. 18, 644 (2022).

The Zeeman effect is the effect of splitting a spectral line into
several components in magnetic fields. The magnitude and the
direction of this splitting depend on the Landé g-factor, which istheoretically predicted to vary with the crystal momentum. Thiscan lead to field-induced modifications to the electronic band
structure in topological and magnetic systems. However,experimental observation of such momentum-dependence ofthe g-factor has remained challenging. Li et al. (Zeljkovic
group, Boston College) reported the experimental discovery ofa strongly momentum-dependent g-factor in a kagome magnet
YMn6Sn6 using quasiparticle interference (QPI) imaging inmagnetic fields. They found that a massive Dirac dispersion
crossing the Fermi level shifts linearly with magnetic fields andby plotting the field-induced shift of the Dirac state at each
momentum, the momentum-dependent g-factor is successfully
obtained. Their result provides the first momentum-resolved
visualization of Dirac band manipulation by the magnetic field,
providing the possibility of driving topological phase transitions.

Figure(a) Averaged dI/dV spectrum on the kagome Mn layer of YMn6Sn6. (inset) Atomically-resolved STM image.

(b) dI/dV map at 0 mV (left) and its FFT image (right). (c) Energy dispersion of the QPI pattern at 0 T (left) and -8 T (right).
(d) Dispersion of the quantum state at k = 0 with magnetic field. (e) Measured g-factor in momentum space.
11

Investigating individual atomic adsorbates on a surface is critically important to understand the atomic-scale processes
associated with on-surface chemical reactions but remains highly challenging. Utilizing the combination of STM andtip-enhanced Raman spectroscopy (TERS) measurements, Li et al.(Nan Jiang group, University of Illinois Chicago)
observed the oxidation of a boron monolayer (borophene) with ~0.5 nm chemical spatial resolution and single bond(B-O) sensitivity. It was found that the oxygen molecule dissociates on a borophene sheet in a thermally reversible
manner, revealing the reactive nature of borophene for oxygen molecule activation. Their experimental techniquerepresents the potential capabilities of investigating site-resolved structural and chemical properties of surface species at
the atomic level in the field of catalysis, on-surface molecular engineering, and low-dimensional materials.

Figure(a) STM image of borophene/Ag(111). Inset: three-dimensional rendered STM image of oxygen adatoms on borophene.
(b) TERS line scan across the interface of an oxygen adatom on v1/6 borophene in the inset STM image.
(c,d) STM images of oxidized borophene before and after annealed at 360 ℃.
12Publication List

in

2022

Hidemi Shigekawa

NPJ 2D Materials and Applications

Institute of Pureand Applied Sciences,
University of Tsukuba, Japan

1. Visualization of Defect Induced In-Gap States in Monolayer MoS₂
D. Trainer et al., NPJ2D Mater. Appl. 6, 13 (2022). USM1300
2. Ultrafast Nanoscale Exciton Dynamics via Laser-Combined Scanning Tunneling Microscopy in Atomically Thin Materials
H. Mogi et al., NPJ2D Mater. Appl. 6, 72 (2022). USM1400-4P

Physical Review Letters
1. Nanoscale Heating of an Ultrathin Oxide Film Studied by Tip-Enhanced Raman Spectroscopy
S. Liu et al., Phys. Rev. Lett.128, 206803 (2022). USM1400
2. Realizing Valley-Polarized Energy Spectra in Bilayer Graphene Quantum Dots via Continuously Tunable Berry Phases
Y. Ren et al., Phys. Rev. Lett.128, 206805 (2022). USM1300
3. Coexistence of Robust Edge States and Superconductivity in Few-Layer Stanene
C. Zhao et al., Phys. Rev. Lett.128, 206802 (2022). USM1300-4P

Research Interests

・Time-Resolved SPM
・Quantum Dynamics
・Low Dimensional Materials
・Organic Solar Cells
・Molecular Science
・Biology

SPM Facilities in the Team

4. Observation of Biradical Spin Coupling Through Hydrogen Bonds
Y. He et al., Phys. Rev. Lett.128, 236401 (2022). USM1300
5. Magnetic Moment Preservation and Emergent Kondo Resonance of Co-Phthalocyanine on Semimetallic Sb(111)
L. She et al., Phys. Rev. Lett.129, 026802 (2022). USM1300
6. Realizing One-Dimensional Electronic States in Graphene via Coupled Zeroth Pseudo-Landau Levels
Y. Liu et al., Phys. Rev. Lett.129, 056803 (2022). USM1500
7. Tunable Sample-wide Electronic Kagome Lattice in Low-angle Twisted Bilayer Graphene
Q. Zheng et al., Phys. Rev. Lett.129, 076803 (2022). USM1400
8. Magnetic-Field-Tunable Valley-Contrasting Pseudomagnetic Confinement in Graphene
Y. Ren et al., Phys. Rev. Lett.129, 076802 (2022). USM1300
9. Characterization and Manipulation of Intervalley Scattering Induced by an Individual Monovacancy in Graphene
Y. Zhang et al., Phys. Rev. Lett.129, 096402 (2022). USM1300

Features:11. Discovery of Charge Order and Corre sponding Edge State in Kagome Magnet FeGe
J. Yin et al., Phys. Rev. Lett.129, 166401 (2022). USM1300

 Multi THz laser + STM (USM1400)
 USM1400 based four probe STM
 Pump-probe technique (fs to ns)

12. Visualization of Chiral Electronic Structure and Anomalous Optical Response in a Material with Chiral Charge Density Waves
H. Yang et al., Phys. Rev. Lett.129, 156401 (2022). USM1200
13. Berry-Phase Switch in Electrostatically Confined Topological Surface States
J. Zhang et al., Phys. Rev. Lett.128, 126402 (2022). USM1300

Light-wave Driven STM

2.5

Product used: USM1400

Liu et al., Sci. Adv. 8, eabq5682 (2022).

Figure(a) Schematic of the experiment. (b) dI/dV map at +1.5 V of 3ML ZnO.
(c) Photocurrent Iphoto map taken at the same location as (b). (d) Interferometric autocorrelation tracesof Iphoto at different positions marked in (c). (e) Fourier-transformed (FT) spectra of (d).
(f) Lateral distance dependence of dI/dV, Iphoto and the FT peak magnitude.
13

The time evolution of coherent lattice
vibrations provides valuable insight into
the interaction between electronic andstructural degrees of freedom in
condensed matter. However,real-space observation of such coherent phonons with nanoscale resolution
has remained challenging. Liu et al.
(Kumagai group, Fritz Haber Institute,
Institute for Molecular Science) demonstrated nanoscale coherent phonon
spectroscopy measurements on
ultrathin ZnO films using ultrafast
laser-induced STM (temporal resolutionof ~10 fs) combined with scanningtunneling spectroscopy (STS) andtip-enhanced Raman spectroscopy(TERS). Their real-time and real-spaceobservation of ultrafast coherent latticedynamics will pave the way for studying
the coupling of lattice, charge, orbital,and spin degrees of freedom in solids
on the atomic scale.

0.0

I THz [pA]

Nanoscale Coherent Phonon Spectroscopy

2D Exciton Dynamics

C60 Carrier Dynamics

1 ps

3 ps

Band Renormalization

7 ps

14 ps

Grain boundary

50 nm

29 ps
td = 1 ps
10 ps

7 nm

Selected References:

100 ps500 ps(1) Y. Arashida, et al., ACS Photonics, 9, 3156 (2022).
(2) H. Mogi, et al., npj 2D Mater. Appl., 6, 72 (2022).
(3) S. Yoshida, et al., ACS Photonics, 8, 315 (2021).
(4) K. Yoshioka, et al., Nature Photonics, 10, 762 (2016).
(5) S. Yoshida, et al., Nature Nanotechnology, 9, 588 (2014).

1 ns

0.0

14

0.4

0.8
1.2
ΔI –ΔI 1950ps (pA)

Ben Feldman

Miguel M. Ugeda

Stanford University
at California, U.S.A.

Donostia International
Physics Centerat Donostia-San Sebastián, SPAIN

Research Interests
・Scanning probe microscopy
・Electronic interactions and correlated phases
・Topological states・van der Waals materials and other 2D systems
・Moiré superlattices and emergent ground/excited states・Electronic compressibility and electronic transport

Research Interests• Electronic/magnetic properties of 2D materials• Two-dimensional superconductivity• Strongly correlated materials

USM1300

Correlated Chern Insulators in
Magic-angle Graphene

USM1300

Collective Modes in 2D-TMD Superconductors
2T

3

dI/dV (Arb. Units)

20
1.6 T

dI/dV (Arb. Units)

1.2 T

10
5
0

0.8 T

0.4 T

1

Spatial Dependence of Correlated
Insulators in Magic-angle Graphene

Features:

2

15

-2

-1

0

1

Bias voltage (mV)Single-layer NbSe2

0T

Features: STM and single-electron transistor (SET) capability
 Extended (18 x 18 μm2) XY scan range
 Six independent sample contacts for device experiments
 ³He (330 mK, >90h hold time), 11 T out-of-plane magnet

 11 T uniaxial z-magnet
 Electron transport capability

0

-3

-2

0

1

2

3

T = 0.34 K

Superconductivity in 2D-TMD Alloys

Magnetism in 2D Kondo Lattices
Single-layer 1T-TaSe2 on single-layer 1H-TaSe2

Competing Hofstadter States and Charge
Order in a Semiconductor Moiré Lattice-1

Bias voltage (mV)Single-layer Nb1-δMoδSe2

30

dI/dV (Arb. Units)

Thermodynamic Probe of Spin Polaronsin Twisted Double Bilayer WSe2

dI/dV (Arb. Units)

8

20

4

10

-20

Selected References:(1) J. Yu, et al., Nature Physics, 18 825 (2022).
(2) B. A. Foutty*, J. Yu*, T. Devakul*, et al., arXiv:2206.10631 (2022).
(3) J. Yu*, B. A. Foutty*, Y. H. Kwan*, et al., arXiv:2206.11304 (2022).
(4) C. R. Kometter*, J. Yu*, T. Devakul*, et al., arXiv:2212.05068 (2022).
15

-10

0

10

Bias voltage (mV)Mo

20

Selected References:

3.0Å

(1) W. Wan et al., Advanced Materials, 34, 2200492 (2022).
(2) W. Wan et al., Advanced Materials, 34, 2206078 (2022).
(3) W. Wan et al., arXiv:2207.00096 (2022).
16

0

-1

0
1
Bias voltage (mV)2

User Interview
ユーザーインタビュー

Dr. Naoya Aizawa, Nakayama Lab., Osaka University
助教 相澤 直矢 博士

大阪大学大学院工学研究科中山研究室

picoTAS and CoolSpek SLIM contributed to Nature for the first time!
UNISOKU (U) あらためまして、
このたびのご研究の Nature への掲載、本当におめでとうございます。
弊社のpicoTASを使っていただいたご研究では初のNature/Science論文で、弊社一同大変喜んでおります。
反響はいかがですか？
UNISOKU (U): First of all, congratulations on the publication of your research in Nature. We are delighted that our
picoTAS was used in your research. How has the response been so far?

相澤博士(A): ありがとうございます。
教科書で習うフントの規則を破ったということで、
皆様から
「おも
しろい！」
とポジティブな反響を頂いています。
2022年のC&ENʼs molecules of the yearにもノミネートして頂きました。
Dr. Aizawa(A): Thank you. We have received positive feedback. Our heptazine analogue was shortlisted for C&EN’s
Molecule of the Year for 2022.

U: 論文のタイトルですが、フント則を破るSingletとTripletのエネルギーの逆転の話だけでも十分凄いと思ったのですが、
Delayed fluorescence from inverted・・・、となっているのはなぜですか？(研究概要は下記要約参照)

U: The title of your paper, 'Inverted Singlet and Triplet Excited States,' which violates Hund's rule, is already quite impressive. However, I'm curious about therationale behind including 'Delayed Fluorescence from' in the title. Could you provide some insight into this? (Please refer to the abstract below.)

Delayed Fluorescence from Inverted Singlet and Triplet Excited States
N. Aizawa et al., Nature 609, 502 (2022).

picoTAS

Recently, numerous photochemists and display manufacturers have focused their efforts on utilizing thermally activateddelayed fluorescence (TADF) of organic compounds for OLEDs. This approach is particularly advantageous as it eliminates the need for rare metals. In TADF, luminescence efficiency is enhanced by converting the triplet excited state (T1) tothe singlet excited state (S1). However, the conversion efficiency is typically limited due to the Hund's rule of maximum
multiplicity, which dictates that the energy of T1 is lower than that of S1 and thus their energy difference (ΔEST) is positive.
To address this limitation, N. Aizawa at Osaka University and his collaborators conducted computational simulations toscreen various heptazine analogues where the ΔEST could be theoretically negative by violating the Hund's rule. Out ofpromising candidates, the researchers synthesized two heptazine analogues. They
showed that one of these molecules exhibit delayed fluorescence with shorter lifetimes atlower temperatures, and the ΔEST was experimentally determined to be –11 meV. Thesefindings represent the first instance of the successful creation of a Hund's rule-breaking
OLED molecule.

Time (ns)

5

300

4
3

200

2

100

1

0
600

800

1000

1200

Wavelength (nm)

1400

1600

0

Transient absorption (10-3)

7
6

400

-2

10
Transient absorption

500

10

0

50

100 150 200 250 300 350
Time (ns)

A: SingletとTripletが逆転していることに加えて、
遅延蛍光として発光することも強調したかったからです。
また、今回の分子が、発光するからこそ、
分光学的にSingletとTripletが逆転していると初めて実験で示すことができました。
A: We’d like to emphasize that in addition to the inversion of singlet and triplet states, the molecule also emits delayed fluorescence. Furthermore, wewere able to spectroscopically prove the inversion because the molecule is fluorescent.

U: なるほど。
ところでセレンディピティ―という言葉がありますが、意外な現象や結果が先に見つかり、理論や目的は後付け、という研究がときどきあると思います。
このご研究は、
その点についていかがですか？
U: I see. By the way, there's a word called 'serendipity,' which refers to a phenomenon where unexpected discoveries or results are made first, andtheories or objectives are added later. I'm curious about how your research relates to this aspect.

A: 今回の研究は理論が先にあり、負のΔESTを示す材料を狙って設計しました。
1980年代からヘプタジン誘導体の理論研究でΔESTが逆転している可能性が議論されてきましたが、実例がありませんでした。
研究の途中では正直半信半疑で、ΔESTが本当に負だとわかったときはかなり驚きました。
A: We started with theoretically designing candidates having a negative ΔEST. Since the 1980s, the possibility of negative ΔEST in heptazine derivatives
has been discussed, but no experimental evidence has been reported. I must admit that I was somewhat skeptical, but when we found out that the ΔESTof the molecule was indeed negative, it was quite surprising.

U:「これはいける」と思ったのはどのタイミングですか？ 決定的な証拠はどのような実験でもたらされましたか？

U: At what point did you feel confident about your success, and what kind of experiments provided decisive evidence for your findings?

A: 普通のTADFなら温度を下げると発光寿命は長くなりますが、この分子では寿命が短くなるのを確認したときです。

A: It was when I observed that the fluorescence lifetime of the molecule became shorter as the temperature decreases. For conventional TADF* molecules, thefluorescence lifetimes become longer as the temperature decreases. (*Thermally Activated Delayed Fluorescence)

A: はい、ユニソクのクライオスタットCoolSpeKを使って発光寿命の温度依存性を測りました。
A: Yes, We used UNISOKU’s CoolSpeK to control the temperature!

17

A: 2020年に着想して、年内にはコアなデータは得られました。むしろ、Natureの査読にすごく時間がかかっています（笑）。

A: We had the idea in 2020, and we obtained the core data within the year. Actually, the review process for the publication in Nature took a long time.

picoTAS CATCHED THE EVIDENCE !

picoTAS が決定的な証拠をとらえた！

U: 査読の過程で、picoTASはどのような役割を果たしましたか？
U: How did picoTAS contribute to the peer-review process?

A: picoTASを用いた過渡吸収測定により、S1とT1の間で可逆的な項間交差が起こっている決定的な証拠を得ることができました。過渡蛍光だけでは、T1が確実に発光に関わっていることを示すことはできません。
また、査読の際に低温下の過渡吸収のデータをレフリーから求められたのですが、picoTAS用の薄型のCoolSpeK-SLIMのおかげで、対応することができました。

A: We were able to obtain decisive evidence of reversible intersystem crossing between the singlet and triplet states byusing transient absorption measurements with picoTAS. This evidence was not evident with transient fluorescencealone, and the data from picoTAS provided crucial information about the involvement of triplets in the emission
process. During the peer-review process, we were asked to provide low-temperature transient absorption data.
Fortunately, we were able to provide the data thanks to the CoolSpeK-SLIM, which was designed for use with picoTAS.

U: これまた素晴らしい！データを拝見すると、発光性の強いサンプル、可視から近赤外に渡る継ぎ目のないデータ、
ナノ秒オー
ダーからサブマイクロ秒オーダーのディケイなど、picoTASの特長が見事に活かされています。
レフリーから特にその辺りのコ
メントもなかったようですが、細かい点で他の市販品では測定が難しいデータであることを、
ここで弊社として強調しておきた
いと思います！ 間違いなくpicoTASにしか取れない凄いデータなんです！
U: That's also wonderful! Looking at your data, we can see seamless spectra spanning from visible to near-infrared, and seamless decays fromnanoseconds to microseconds for highly fluorescent samples. Although the referees did not mention these remarkable results, we'd like to emphasizethat no other commercially available product can obtain data of the same quality as picoTAS.

A: そうなんですね（笑）。たしかにYAGレーザーの波長付近の測定は通常難しいですよね。

A: Certainly. There is usually a spectral gap around 1064 nm due to the notch filter for removing the extremely intense Nd:YAG laser fundamental.

このご研究で実験的証拠を得るためですか？
U: picoTASでの過渡吸収測定のご検討を始められた目的は、
U: Did you consider purchasing a picoTAS to obtain experimental data for this study?

A: はい、今回の系のようにナノからサブマイクロ秒の発光材料の過渡吸収を測定するためです。

A: Yes, exactly! It’s to measure the transient absorption of fluorescent molecules in the nanosecond to sub-microsecond range, as in the case of thisstudy.

U: それまで過渡吸収測定をされたご経験はあったのでしょうか？

U: It’s nice! Were you familiar with transient absorption measurements before conducting this study?

A: 経験はまったくなかったです。ユニソクさんにしっかりサポートして頂けたので、大変助かりました。
A: We had no experience at all. Thank you for your kind support.

U: 相澤先生の、応用に対する考え方とかは？

U: By the way, I was wondering what your thoughts and approaches are towards basic research and appliedresearch?

A: 有機ELの研究は、有機化学・光化学・量子化学・半導体物理といった様々な分野の知識や技術が必要な、
まさに応用研究だと思います。おもしろいことに、こういった応用研究からも、基礎科学の知見が得られることは多々あって、今回の負のΔESTの研究も好例だと思います。

What do you expect UNISOKU ?

-4

The both data from Extended Data Fig.1

U: Could it be measured with...

U: That's great! How long did it take the inception to outcome?

A: I think research on OLEDs is truly an applied research. Interestingly, such applied research often provides insights into fundamental science, and this research on
negative ΔEST is one of the good examples.

-3

10

U: それはもしかして・・・

U: それは素晴らしい！ 着想して結果が出るまで、どのくらいかかりましたか？

ユニソクに対してご希望は？

U: 今回のNatureのご研究のためにpicoTASを買われたということでしたが、今後も過渡吸収は使われていきますか？
U: Do you plan to continue using the transient absorption setup in your future work?

A: はい、
これからの研究でも大いに活用すると思います。
A: Yes, I think we will make great use of it in our future work.

U: 弊社では2021年にデモルームを整備し、picoTASなどの有償の来社実験サービスを行っています。デモルームのpicoTASでは、励起波長を変えることができ、また時間分解能も標準モデルより少し高いです。先生は picoTAS のユーザー様ですので、年２日まで無償でご実験に来ていただくことができますので、是非ご利用いただきたいのですが、３日目からは有償となり、アカ
デミック価格は通常料金の半額で１日４万円となります。

U: In 2021, we established a Demo Room where we offer paid experimental services using our products. The Demo Room is equipped with the picoTAS,
which offers tunable excitation wavelengths and higher temporal resolution than the standard model. The cost for using the Demo Room is 80,000 yen
per day, but we offer a 50% academic discount, making it 40,000 yen per day.

A: 良心的な価格ですね。研究室の装置は、励起光波長が355 nmしかなく、高次のSnを励起しているので、450nmでS1だけを直接励起した場合にどうなるか興味があります。

A: That’s reasonable, I think. Our setup only has an excitation wavelength of 355 nm, which generates higher-lying singlet states. I’d like to use 450 nm to directly
generate S1.

U: 是非お越しください。最後に、装置に足らないところ、
またユニソクに対して希望されることはありますか？

U: You are always welcome to visit our Demo Room. Finally, we would like to ask if you have any feedback or suggestions for improvements to our
products or if you have any specific requests for UNISOKU?

A: picoTASとCoolSpeKを連携させて、自動で過渡吸収の温度依存性を測定できると嬉しいです。
また、
ユニソクさんの手厚いサポート体制も継続してほしいです。
A: It would be great if the picoTAS and CoolSpeK could be combined to enable automated measurements of the temperature dependenceof transient absorption. Additionally, I hope that your excellent support system can continue in the future.

相澤博士はこれからも新進気鋭の若手研究者として研究分野を牽引してゆかれることでしょう。今後の益々のご活躍に期待したいと思います！
Dr. Aizawa is expected to continue leading his research field as one of the rising young stars. We look forward to his even greater achievements in the future!
※ インタビュー全文はユニソクホームページにて掲載を予定しています。 ※ The full interview is scheduled to be posted on the UNISOKU website.
18

Product Introduction: Accessories for CoolSpeK USP-203

CoolSpeKのオプション紹介

For optical fiber connection

For short path cuvettes

光ファイバーを使用した測定に短光路長セルでの測定に

For film or plate samples
薄膜、板状試料の測定に

来社実験サービスのご案内
We Now Offer In-House Experimental Demonstrations.

CoolSpeK
USP-203

CS-AD-UW-FB

CS-CL-H1 (1 mm path)
1mmセルアダプタ

ファイバーホルダー

CS-KT-H00-32 CS-KF-H00-32
CS-KT-H07-42 CS-KF-H07-42

CS-CL-H2 (2 mm path)

固体サンプルホルダー 固体サンプルホルダー(透過/吸収用)(蛍光用)

Attachable fiber holder
for CoolSpeK

For transmittance measurementwith short path cuvettes

クールスペック本体に取り付け可能なファイバーホルダーです。

短光路長セルでの透過/吸収測定時に使用します。

Sample holders for measuring thetransmittance or fluorescence ofsolid samples in the form of films,
plates or powders.

2mmセルアダプタ

For remote measurement
リモート測定に薄膜・板状の固体試料、粉体試料の透過・
吸光・蛍光測定用のサンプルホルダーです。

For picoTAS or pump-probe spectroscopies
picoTAS、ポンププローブ装置での低温測定に

Available for
only 2mm path cuvettes
光路長 2 mm のセルに対応

Stirrer built-in

E-mail: info@unisoku.co.jp

弊社では最新製品のデモルームを開設し、来社実験サービスを行っています。興味を持っていただいた製品について、購入前に実際に性能を確認の上、購入後も満足して使っていただきたいと考えております。
また装置をなかなか購入できないお客様にも測定をしていただき、研究の一助となりたいとも願っております。
Because we aim for after-purchase satisfaction, we provide our customers the opportunity to check the product performance before
purchase. Further, we also aim to help customers who are not ready to purchase our systems conduct their research. To these ends, wehave set up a room showing the newest instruments, both for demonstration purposes and for in-house experiment service.

ピコ秒過渡吸収分光 ＋ 蛍光寿命コンバインシステム

picoTAS + TCSPC

Combined System ofPicosecond Transient Absorption and
TCSPC Fluorescence Lifetime

スターラー内蔵We have various accessories other than listed on
the right. Please contact us for more information.
右記以外にも測定に役立つ様々なオプションをご用意しております。詳しくはお問い合わせください。

Novelties of Optical Products

Measurement software(Under development)
測定ソフトウェア（開発中）

CoolSpeK SLIM
USP-203 ST-BP

分光用クライオスタット

近赤外対応ナノ秒時間分解分光測定装置

Cryostat for Spectrophotometer
USP-203 Series

Conventional UV/VIS/NIR Flash Photolysis System

CoolSpeK ※ノベルティグッズご用意しています

Commemorative items
for over 500 units sales of USP-203
CoolSpeK販売500台達成を記念したグッズを作成しましたWe will give those items at our office and exhibition booth.

ご来社や展示会ブースへお立ち寄りの際にはぜひお持ち帰りください！

Mousepad with optical table for spectroscopy.
It is useful for optical researchers.
実験に役立つと好評のマウスパッドです。
波長/波数/エネルギーの換算が一目でわかります。

TSP-2000※CoolSpeKにつきましてはお客様のラボに伺い、お客様が所有している分光計と組み合わせることによる訪問デモ測定も随時行っております。

We also offer on-site CoolSpek demonstration at your facility. CoolSpek adaptation to your spectrometer for custom demonstration measurements isavailable

Hydrogen-Sensitive Thermal Desorption Spectroscopy System

HEMTO-TDS

Publication List in 2022

超高感度熱脱離分析装置

Selected picoTAS/CoolSpeK/TSP-2000 related papers

Preparation and Characterization of a Formally NiIVOxo Complex with a Triplet Ground State and Application in Oxidation Reactions
D. G. Karmalkar et al., J. Am. Chem. Soc. 144, 22698 (2022).
Unassisted Uranyl Photoreduction and Separation in a Donor? Acceptor Covalent Organic Framework
Y. Song et al., Chem. Mater. 34, 2771 (2022).
Controlling Diradical Character of Photogenerated Colored Isomers of Phenoxyl-Imidazolyl Radical Complexes
M. Nishijima et al., J. Am. Chem. Soc. 144, 17186 (2022).

Results from the Demo Room デモルームによる成果

Fluorescein-Based Type I Supramolecular Photosensitizer via Induction of Charge Separation by Self-Assembly
H. Shigemitsu et al., JACS Au, 2, 1472 (2022).
On the Origin of Photoluminescence Enhancement in Biicosahedral AgxAu25−x Nanoclusters (x = 0–13) and Their Application to
Triplet–Triplet Annihilation Photon Upconversion
M. Mitsui et al., Adv. Opt. Mater. 10, 2200864 (2022).

デモ測定受付中※こちらはデモ測定のみの対応です。

Now Accepting Demo
Measurements*This is a demo measurement only.
試料導入室を備えたスタンドアロンの3室構成のシステムをデモ測定器として準備しています。本計測は大気中での水分吸着に敏感な可能性がありますので、試料の導入方法や測定内容については相談して進めさせていただきます。
【Custom demo measurements】
We organize demonstration measurements of your samples using the HEMTO-TDS at our facility.
Contact us to discuss the details of the samples you are interested in!

Please refer to our website for a detailed publication lists/詳細な論文リストはユニソクウェブサイトをご覧ください

19

20

14 Tensho そば切り 天笑 （枚方市岡南町10-30）
Sobakiri Tensho is afamous soba restaurant
located near Hirakata-shi
station. It was awarded astar in the Michelin Guidein 2011. Open only forlunch, and there isalways a long line of customers waiting to enter.
The restaurant is also famous for sobagaki(buckwheat mash) and offers a wide selection ofsake that goes well with soba.
そば切り天笑は枚方市駅近くにある有名な蕎麦屋です。2011年にミシュランガイド一つ星を獲得しています。昼のみの営業で、いつも行列ができています。蕎麦がきも有名で蕎
麦に合うこだわりの日本酒を揃えています。

UNISOKU Gourmet Map

ユニソク周辺グルメマップ

UNISOKU welcomes you to visit our company. This page features
restaurants located near UNISOKU or in Hirakata city. We hope thatyou will find it helpful when planning your visit to our company.

世界的な規制緩和を受け、弊社はお客様のご来社を歓迎しております。
ユニソク近辺や枚方市近辺のお食事処を取り上げました。
弊社お立ち寄りの際のお食事の参考になれば幸いです。

13 Kamasei 釜盛 (枚方市甲斐田新町1-1)
Popularrestaurant witha long line atmeal times.
You can enjoy
your favorite
udon from awide variety of menu items. If you want toenjoy the true taste of udon, try "Zaru Udon"or "Kama-age Udon". The one with tempura
is also recommended.
食事時には行列が出来る人気店。種類豊富な
メニューから自分好みのうどんを楽しめるお店。
うどん本来の味を楽しみたい方
は、「ざるうどん」「釜揚げうどん」
を。
天ぷら付もオススメです。

Here is the complete gourmet map グルメマップ拡大版はコチラ➡

Nettai-shokudo is locatednear Hirakata-shi station,
where you can enjoy
authentic Thai and Balinese
cuisine in a casual
atmosphere. They offer awide variety of menus ranging
from curry that even children can easily eat toauthentic dishes that even locals are satisfied with.
熱帯食堂は枚方市駅すぐ近くにあり、本格的なタ
イ・バリ料理を気軽な雰囲気で楽しめます。子供でも食べやすいカレーから、現地の人も唸る本格メニューまで豊富なメニューがあり、幅広い人達が楽しめます。

You can enjoy Okonomiyaki(Japanese pancake) orYakisoba (pan-fried noodle
with savory pancake sauce) at
Kazeno-machi. They offer
special Okonomiyaki madewith seasonal ingredients. It's
also a good idea to try the "Kazeno-machi special"which includes a mix of seafood, beef, and pork.
Additionally, you can try cooking Okonomiyaki by
yourself with the option to have a waiter cook it for you.
風の街では関西名物のお好み焼き、焼きそばを中心に召し上がっていただくことができます。
旬の素材を生かした期間限定のお好み焼きや、たくさんのシーフードや牛肉が一緒になった”風の街スペシ
ャル”が絶品です。
セルフで焼くスタイルですので、ぜひお好み焼きづくりにもトライしてください! (焼いてもらうことも可能です)12

丸源ラーメン釜盛

10 風の街13

枚方市駅

Hirakata-shi Station

2 Hinemosu ひねもすぱん（枚方市堤町10-24）

麺麓

9Hinemosu is situated inside
the Kagiya shop, which is alittle further away from
Hirakata-shi station. They
specialize in selling breadmade with completelyorganic natural yeast. The
bread has a chewy and fluffy texture and adelicious taste. Their breads become even moredelicious if you let them rest overnight.
枚方市駅より少し離れた鍵屋にあるパン屋です。天然酵母で発酵させたもちもち食感のパンが美味しいです。一晩おくことによってさらに美味しくなる、とのことです。

枚方市駅

呼人堂

ポムの樹

11

3

熱帯食堂

1

大黒屋
大峰本店

8

山くら

5

のとや

7

4

ステーキカッポー
恒づね

6 ちびた

14

天笑

ひねもすぱん

300 m

2

4

Notoya 鰻彩 のとや （枚方市川原町 7-1）

Notoya is anauthentic eel
restaurant situatedin Kawahara-cho
near Hirakata-shi
station. They use
fresh domestic eel
and grill it overcharcoal from beginning to end, without
steaming it (Kansai style). This way, you canenjoy the flavor and crispy texture of the eel.
Recommended for those who want to eat
authentic eel cuisine.
のとやは枚方市駅近く川原町にある鰻屋です。
国産の新鮮な鰻を使い、鰻を蒸さず初めから最後まで炭
火で焼き上げる関西ならではの焼き方を採用しています。
鰻の味がストレートに出てパリッとした食感が味わえます。
本格的な鰻料理を食べたい方にお薦めです。
21

11 Pomunoki ポムの樹 （枚方市岡本町7-1）
Authentic
Japanese-Western
fusion cuisinefeaturing omeletteand rice made withcarefully selected
ingredients! Whileketchup rice is the classic choice for omelette, you
can opt for butter rice which has a milder taste. The
addition of pink pepper on top creates a great
accent to the dish.
素材にこだわった本格派洋食、オムライス！
ケチャップライスが定番なオムライスですがバターライスに変更もでき、口当たりのいいマイルドな味。ピンクペッパーのアクセントが効いていました。

10 Kazenomachi 風の街 (枚方市出屋敷元町1-46-1)

Eat inイートイン
Take-out テイクアウト
Eat in & Take-out イートイン & テイクアウト

1 Nettai-shokudo 熱帯食堂 (枚方市岡東町12-3)

3 Kojindo 呼人堂 (枚方市岡本町10-3)This store, founded in
1907, specializes indorayaki. The moist
dough and sweet red
bean paste create aconsistent and delicious
taste, as one would
expect from a long-established shop. In addition to regular dorayaki, they alsooffer other unusual varieties such as rice cake-filled,
butter-filled, plum-filled, and kumquat-filled. They alsooffer a branding service, and this time we had"UNISOKU" branded on the dorayaki. You can alsoorder original branding with your own logo, etc.
明治40年創業のどら焼き専門店。
しっとりした生地と甘さ控えめの餡で安定した美味しさはさすが老舗と思いきや、普通のどら焼きの他にも餅入り、バター入
り、梅入り、金柑入りと変わった種類があります。焼印
サービスもあり、今回は「ユニソク」と焼印を入れてもらいました。ロゴマーク等のオ
リジナル焼印も注文できます。

12 Marugen 丸源ラーメン (枚方市出屋敷元町1-7-1)
The inside of the store is bright andspacious. It's an easy-to-reachplace because there is a large
parking lot. The signature dish,"Meat Soba," is characterized bythinly sliced pork used as aningredient. It is topped with grated
yuzu citrus, making it light andrefreshing. The fried rice is also
served in a unique way that you won't
find anywhere else, giving it a bit of an attraction.
店内は明るく、ゆったりしています。駐車場も広いので行きやすいお店です。看板メニューの「肉そば」の具に豚の薄切り肉を使っているのが特徴的。ゆずおろしがトッピングされていてあっさりいただけます。炒飯も他では見ない変わった形で提供され、ちょっとしたアトラクション感があります。

5 Yamakura 本格炭火焼鳥 山くら（枚方市川原町10-6）
At Yamakura, you canenjoy Japanese-style
chicken BBQ called
yakitori and local sakeselected from several
prefectures. Ordering"Kushi Mori" (assorted
yakitori) is a great option
as it allows you to savor various kinds of yakitori.
You can also have a wonderful time with sake andappetizers such as edamame and hirakata-tulip(fried chicken flavored with salty and sweet sauces).
山くらでは全国選りすぐりの日本酒と炭火焼き鳥をいただくことができます。
炭火焼き鳥はお任せの串
焼き盛り合わせを頼めば間違いないです。
居酒屋定番のおつまみの枝豆、
特製の甘辛ダレがかかった枚方チューリップなどと共にお酒をお楽しみください。

6

Chibita ちびた （枚方市春日西町2-1-4）

Chibita looks like anold-fashioned café andoffers a variety of set
meals, as well as curryand rice, coffee, andmore. The owner's
hospitality is great, as
each set meal comes with bonus appetizers
that might even fill you up.
純喫茶風な佇まいのちびたでは、珈琲やカレーをはじめとする定食をいただけます。
サービス精神あふれる店主さんの計らいで、定食にはたくさんのおまけがつくのでボリュームが
あります。

7

Tsunezune 恒づね(枚方市津田山手1-8-1)

The restaurant has an
upscale atmosphere andoffers course menus fordining in, but they also
provide take-out box
lunches. The steak meatis tender and flavorfuleven when cold. The bento boxes are visuallyappealing as well. Reservations are required forboth in-restaurant dining and take-out orders.
高級感があり、雰囲気のいいお店です。店内でコー
スメニューをいただけますが、テイクアウトのお弁
当もあります。
ステーキ肉は柔らかく、冷めてもとても美味しい。見た目も豪華なお弁当です。店内、
テイクアウトともご利用の際には予約が必要です。

22

9

Menroku 麺麓 (枚方市大峰元町1-6-30)

8

Daikokuya 大黒屋 (枚方市大峰元町2-8-5)

Menroku is a 10-minute walkfrom UNISOKU and offers avariety of noodle dishes withstrongly flavored, duck-based
soup (both Tsukemen and thebasic soup). For Tsukemen, you
can change the flavor by mixing
it with balsamic sauce. You can also choose between
roasted duck fillet options, including thigh or loin! Note that
Tsukemen is a dipping-style ramen dish shown in the photo.
会社から徒歩10分でいける麵麓では、濃厚な鴨出汁の効いた中華そばやつけ麵をいただくことができます。
つけ麺は、バルサミコソースを絡めながら味の変化を楽しむことができます。
もも、
ロース
どちらかの鴨チャーシューをお選びください。

This long-established Japanese
confectionery has been inbusiness for 180 years. Popular
items include "Oimomaki" and"Cheese Souffle". Products
change with the seasons, andmany Japanese and Western
sweets are available, such as"Strawberry Daifuku" from winter to spring, "Wakaayu"
and "Kuzu-Zakura" in early summer, and "Ultra-soft
Chestnut Soufflé during autumn" for seasonal soufflé.
There are also famous sweets associated with
Hirakata, making them ideal for souvenirs.
創業180年の老舗和菓子処。
「おいも巻き」や「チーズスフレ」が人気です。季節ごとに商品が入れ替わり、冬から春にかけては「いちご大福」、初夏には「若鮎」「くず桜」、秋になると季節のスフレに「極軟栗のスフレ」など、たくさんの和洋菓子を扱っています。枚方にちなんだ銘菓もあるので手土産に最適です。

Where to Contact
in Your Area
代理店紹介

■ SPM, ■ Optics, ■ SPM & Optics

EUROPE／ISRAEL／NORTH AFRICA

nanoscore GmbH

Maisebachstraße 3, 61479 Glashütten, Germany
TEL +49 (0) 6174-619-950
FAX +49 (0) 6174-619-949
t.berghaus@nanoscore.de
www.nanoscore.deAnarghya Innovations & Technology Pvt. Ltd.

SPECS-TII Technology (Beijing) Co., Ltd.

CHINA

Room 418A, Building 39, 4Workers Stadium North Rd,
Chaoyang District, Beijing 100027, P.R.China
TEL +86-10-65010355
sales@specs-tii.com.cn
www.specs-tii.com.cn

INDIA#32, 7th A Main Road, Muthyalanagar,
Mathikere, Bengaluru, Karnataka – 560054 India.
Tel: +91-80-23376488,
Fax: +91-80-23375606,
Cell & WhatsApp: +91-9845019130
sales@anarghyainnotech.com
www.anarghyainnotech.com

CANADA／USA／MEXICOSPECS-TII Inc.

UN
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to at d U haiyo take strib s
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ca
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TAIWANSHUMOTEK CORP.
No. 111, Jiabei 1st St. Zhunan, Miaoli County 35058,
TaiwanTEL +886-37-612810 (Office), +886-919-706759
febchangs@gmail.com
sales@shumotek.com.tw
shumotek.com.tw

SOUTH KOREAINA Korea Co., Ltd.
12F, 110 Mallijae-ro, Mapo-gu,
Seoul, 04184 Korea
TEL +82-2-714-5456
FAX +82-2-714-5457
shpark@inakr.com
www.inakr.com

20 Cabot Blvd., Suite 300
Mansfield, MA 02048 USA
TEL +1-508-618-1292
usa@specs-tii.com
www.specs-tii.com

Worldwide Exchange LLC

Lambda Ray Co., Ltd.
55-16, 247beon-gil, Mabuk-ro,
Giheung-gu,Yongin-si,
Gyeonggi-do, 16891 Korea
TEL +82-31-693-5776
FAX +82-31-284-6089
jayjeong@lambdaray.co.kr
www.lambdaray.co.kr

P. O. Box 1559
Princeton, NJ 08542
info@wwe-us.com
www.wwe-us.com

For customers outside those areas, contact UNISOKU directly. Mail : info@unisoku.co.jp

Events学会・展示会情報

日本語

Meet the Artists

English
作家紹介

Please find the artist introduction
for the cover artwork here.
(A classmate of the editorial committee
member)

表紙・作品のアーティスト紹介はこちら（編集委員の同級生）

Editor ; Riku Shibuya(Chief), Yoshihide Seino, Katuya Iwaya, Hiroko Fusadate, Nozomi Nishiyama, Chiaki Sawada, Toshiyuki Kawabata

20230406