bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sequence-controlled chiral induced spin selectivity effect in ds-DNA
Authors: Bangruwa Neeraj , Suryansh  , Peralta Mayra , Gutierrez Rafael , Cuniberti Gianaurelio , Mishra Debabrata 
Published: July 2023

In this research, we explore sequence-dependent chiral-induced spin selectivity (CISS) in double-stranded (ds)-DNA using time-correlated single-photon counting and electrochemical impedance spectroscopy supplemented by tight-binding calculations of the phenomenon for the first time. The average lifetime of the photo-excited electrons in a Quantum Dot-DNA system is influenced by the CISS effect generated by the DNA molecule, and the difference in average time decay of electrons was found to be 345 ps for opposite polarity (“UP” and “DOWN”) of spins due to the CISS effect. Moreover, the yield of spin-polarized electrons due to the CISS effect was reduced by more than 35% from perfect DNA to DNA with point mutations. Remarkably, by employing a tight binding method combined with Green’s function formalism for transport, simulations of the process support the observed experimental trends. Our results provide a basic understanding of the sequence-specific spin-dependent electron transfer through ds-DNA. These results would help to build spin-based next-generation DNA sensors.
The double object construction in 19th‑ and 20th‑century Swedish
Authors: Valdeson Frederik 
Published: July 2023

Abstract
This paper presents a study of the double object construction
(DOC) in 19th‑ and 20th‑century Swedish, focussing on the semantic range of
the construction. The results show that throughout this period, the Swedish
DOC occurs with verbs of transfer (e.g. ge ‘give’), future
transfer (erbjuda ‘offer’), dispossession
(beröva ‘deprive’), hindrance (neka
‘deny’), communication (säga ‘say’), causation
(förorsaka ‘cause’), creation and obtaining
(laga ‘cook’, skaffa ‘obtain’) as well
as verbs of attitude (avundas ‘envy’). Verbs of benefaction
and malefaction (öppna ‘open’, spärra
‘block’) are found in the 19th‑century data, but do not occur in the DOC in
present-day Swedish anymore. Over time, verbs of transfer have come to
constitute the majority of the instances of the DOC, while most other
semantic categories have undergone a decrease in token frequency, relative
to the construction as a whole. These findings suggest that since the
beginning of the 19th century, the Swedish DOC has undergone a process of
semantic specialization, similar to the development of the corresponding
constructions in English (Colleman and De
Clerck 2011; Zehentner 2018) and Dutch (Colleman 2011). The study also reveals a decline in
text frequency and overall type frequency of the DOC as a whole, indicating
that the construction has become less productive over the last two
centuries.
Effectively improved energy storage performances of poly (vinylidene fluoride)-based nanocomposites via loading low fractions of TiO2@Fe3O4@ethylenediamine hybrid nanowires
Authors: Zhang Ting , Huo Xiaoyun , Wang Ling , Ma Fang , Hou Yafei 
Published: July 2023

Abstract
Dielectric capacitors with satisfactory energy storage performances are highly demanded. Herein, x vol.% TO@FO@ethanediamine (EDA)-poly (vinylidene fluoride) (PVDF) nanocomposites combining the novel one-dimensional (1D) hybrid TiO2@Fe3O4@ethylenediamine (TO@FO@EDA NWs) as fillers and PVDF as matrix deliver the enhanced energy storage performances. Compared with the TO-, TO@EDA- and TO@FO- filled nanocomposites, TO@FO@EDA filled nanocomposites deliver the highest polarization, breakdown strength and energy storage performances because of the synergistic effects of 1D TO, conductive FO and EDA. As a result, the 2 vol.% TO@FO@EDA-PVDF nanocomposite shows the highest polarization difference (6.92 μC cm−3 at 435 kV mm−1), leading to an excellent discharged energy density (13.64 J cm−3), which is 192% higher than that of the pure PVDF (7.11 J cm−3). The primary results might provide a new solution to optimize the energy storage performances of polymer-based nanocomposites.
Molecule–plasmon–photon hybridization and applications
Authors: Yan Lü Dong , Badshah Fazal , Li Xin-Ke , Tong Rui , Wu Jun , Wu Cheng-Rui , Zeng Lihaowen , Ma Ming , Zhou Yuan 
Published: July 2023

Abstract
We study a potential hybrid quantum system with a plasmonic nanocavity coupled to a vibrating mode of a single molecule and another optical cavity mode. To explore some important and valuable applications in quantum physics, we discuss and evaluate several different applications with respect to the plasmon-mediated quantum interface, the plasmon-assisted engineering of two-mode continuous-variable entanglement, and pursuing an indirect and ultrastrong molecule–photon cooperativity. In addition, governed by the relation of symmetry breaking and quantum phase transitions (QPTs),single-molecule-induced QPTs are also studied in this tripartite hybrid quantum system. This theoretical study strongly supports potential applications of this hybrid system in the field of quantum information processing. It is believed that our investigation of molecule–plasmon–photon hybridization can not only open a new avenue toward quantum manipulation, but also provide a fresh and reliable platform to carry out many applications with high efficiency.
Theoretical and experimental demonstrations of the transversely symmetric and antisymmetric properties of topological edge states
Authors: Yuan Weitao , Zhao Jinfeng , Long Yang , Zhang Xiaoqing , Ren Jie , Zhong Zheng 
Published: July 2023

Abstract
Topological phononics are well known for their topological edge states (TES) due to backscattering immunity and pseudospin-dependent phonon transport. Here, we study two types of TES on valley phononic crystal (PC) plates. We magnify the transversely symmetric and antisymmetric properties by observing the displacement distribution in both simulations and experiments. We underline the theoretical origin of transversely symmetric and antisymmetric properties based on a simplified mass-spring model, i.e. the combination of the phase difference caused by the periodicity of the PC plate and the phase difference between sites p and q in the unit cell. Our results enrich the features of TES and offer the possibility of designing mechanical devices or controlling wave propagation along phonon circuits.
Antiferromagnetic structure with strongly reduced ordered moment of p-electron in CsO2
Authors: Nakano Takehito , Kontani Shun , Hiraishi Masatoshi , Mita Kaito , Miyajima Mizuki , Kambe Takashi 
Published: July 2023

Abstract
We have performed a powder neutron diffraction study on CsO2, where the unpaired electron with

s
=
1

/

2

in the

π
∗

orbital of the O

2
−

ion is responsible for the magnetism. The magnetic reflections 0

1
2

0 and 0

1
2

1 were observed below the Néel temperature of about 10 K. An antiferromagnetic structure with a propagation vector of (0,

1
2

, 0) and magnetic moments parallel to the a-axis is the most plausible. The magnitude of the ordered moment is about 0.2 µ

B
, which is considered to be strongly reduced due to the one-dimensionality of the system. We propose a possible

π
∗

orbital order that can explain the obtained magnetic structure, and discuss its relation to the one-dimensionality.
Laser absorption spectroscopy for plasma-assisted thermochemical treatment. Part II.: Impact of the carbon and water contaminants on a low-pressure N2–H2 discharge
Authors: Pipa A V , Puth A , Böcker J , Jafarpour S M , Dalke A , Biermann H , Röpcke J , van Helden J H 
Published: July 2023

Abstract
The density evolution of

H
C
N

,

N

H
3

,

H
2

O

and

C
O

molecules over time was monitored by laser absorption spectroscopy in a low pressure DC pulsed discharge in N2–H2 gas mixtures with addition of CH4 or O2. The discharge was maintained in an industrial-scale, active screen (AS) plasma nitrocarburizing (ASPNC) reactor with a steel AS. The measured species densities were analysed using a simplified kinetic model that includes three characteristic times for chemical processes in the ASPNC reactor. The shortest time (1–4 min) was associated with the gas residence time in the reactor, the middle one (about 20 min) was assigned to surface reactions on the AS and workload, whereas the largest one (about 3–5 h) was assigned to surface reactions on the cold reactor walls. The work highlights the importance of monitoring the gas composition during plasma nitrocarburizing processes in order to maintain defined treatment conditions and compensate for continuously changing chemical kinetics at the internal reactor surfaces.
Uniqueness on recovery of Lamé constants by the same boundary measurement
Authors: Tang Wanjing , Li Shizheng 
Published: July 2023

Abstract
We consider the recovery of Lamé constants and an unknown inner core in elastic system. In this paper, we use layer potential technique to represent the solution of the equation and analyze the obtained solution using transmission conditions across the boundary. Firstly, in a single-layer structure, using the same boundary measurements, we utilize the obtained solution to uniquely recover the Lamé constant. Then, in a two-layer structure, we also prove a Calderón-type identity and use this identity to uniquely recover the piecewise Lamé constant through the same boundary measurements. Finally, we prove that in a two-layer structure, the unique recovery of piecewise Lamé constant in the quasi-static regime.
Analytical estimation of lifetime of quasi-bound states in iii-v semiconductors quantum well
Authors: Nimje Rohit Ramesh , Mahajan Ashutosh 
Published: July 2023

Abstract
The lifetime of electrons in the Quasi Bound States in a quantum well formed by III-V semiconductors has been calculated numerically by several researchers in the past. In this work, we obtain an analytical expression for the lifetime by finding the poles of the scattering matrix in small-width approximation. Airy functions which are solutions of the Schrödinger equation for triangular potentials are expanded asymptotically for large arguments and in power series for small arguments. A scattering problem for the triangular potential well is solved with the help of mixed boundary conditions to derive the expression for the decay width that further gives the net tunneling current from the quantum well. Heterostructures of III-V materials are modeled with triangular wells whose experimental measurements are in close approximation with the theoretical calculations presented in this paper. The analytically calculated decay width in this work is also compared with the reported values by different numerical methods and found in close agreement with them.
Cosmic birefringence from neutrino and dark matter asymmetries
Authors: Zhou Ren-Peng , Huang Da , Geng Chao-Qiang 
Published: July 2023

Abstract
In light of the recent measurement of the nonzero Cosmic Microwave Background (CMB) polarization rotation angle from the Planck 2018 data, we explore the possibility that such a cosmic birefringence effect is induced by coupling a fermionic current with photons via a Chern-Simons-like term. We begin our discussion by rederiving the general formulae of the cosmic birefringence angle with correcting a mistake in the previous study.
We then identify the fermions in the current as the left-handed electron neutrinos and asymmetric dark matter (ADM) particles, since the rotation angle is sourced by the number density difference between particles and antiparticles. For the electron neutrino case, with the value of the degeneracy parameter ξν
e
recently measured by the EMPRESS survey, we find a large parameter space which can explain the CMB photon polarization rotations. On the other hand, for the ADM solution, we consider two benchmark cases with Mχ
= 5 GeV and 5 keV. The former is the natural value of the ADM mass if the observed ADM and baryon asymmetry in the Universe are produced by the same mechanism, while the latter provides a warm DM candidate. In addition, we explore the experimental constraints from the CMB power spectra and the DM direct detections.
Polarization-insensitive metamaterial perfect absorber in near-infrared band based on trapezoidal silver array
Authors: Wang Jincheng , Feng Hengli , Zhang Jingyu , Zhang Zuoxin , Liu Chang , Fang Dongchao , Ran Lingling , Gao Yang 
Published: July 2023

Abstract
In this article, we presented our proposal for a metamaterial perfect absorber (MPA) operating in the near-infrared band. Our MPA comprised a trapezoidal silver layer, a substrate layer, and an intermediate alumina layer. The transmission characteristics of MPA were analyzed by the three-dimensional (3D) finite difference time domain method. The simulation results were analyzed by equivalent circuit theory. The results show that the MPA achieved 100% absorption of transverse magnetic (TM) polarization and transverse electric (TE) polarization with resonance wavelength

λ

= 1492.5 nm. By varying the length of the bottom side of the trapezoid, the MPA’s resonance wavelength could be effectively tuned, and the absorption was maintained at above 99%. With the incidence angle of 0°–55°, the absorption remains above 90% at TE polarization and above 80% at 55°–70°. The absorption at the TM polarization remains above 99% when the incident angle is 0°–70°. A wide angle of incidence and good absorption were achieved. The sensitivity (S) and figure of merit were 228 nm/refractive index unit and 1378 RIU−1, respectively. The proposed absorber with excellent absorption in the range of infrared spectra has a promising application potential in fields such as energy harvesting and infrared sensors.
Simulation of high-frequency gravitational wave detection using modulated Gaussian beam*
Authors: Wu 吴 Mingjun 鸣军 , Li 李 Jin 瑾 , Jiang 蒋 Qingquan 青权 
Published: July 2023

Abstract
This paper investigates the feasibility of using a Li-Baker detector based on a modulated Gaussian beam to detect gravitational waves in the GHz band. The first-order perturbation photon fluxes (PPF, signal of the detector) and the background photon fluxes (BPF, main noise of the detector), which vary with time, and the transverse distance are calculated. The results show that their propagation directions and energy densities are much different in some areas. Apart from BPF, we also consider two other important noises: diffraction noise and shot noise. In the simulation, it is found that the diffraction noise and shot noise are both lower than the signal level. Meanwhile, the main noise (BPF) can be eliminated when the receiving screen is located in certain special transverse areas where the BPF direction is opposite to that of PPF. Thus, the signal to noise ratio (SNR) obtained using our detection method can reach up to

in some transverse areas. These results are beneficial for the design of the Li-Baker detector.
Study of various ground state decay mechanisms of Actinide nuclei*
Authors: Jindal Chahat , Sharma Nitin , Sharma Manoj K. 
Published: July 2023

Abstract
The special property of the actinide mass region is that nuclei belonging to this group are radioactive and undergo different ground state processes, such as alpha decay, cluster radioactivity (CR), heavy particle radioactivity (HPR), and spontaneous fission (SF). In this study, the probable radioactive decay modes of the heavy mass region (Z = 89−102) are studied within the framework of the preformed cluster model (PCM). In the PCM, the radioactive decay modes are explored in terms of the preformation probability (

) and penetration probability (P) at the turning point

, where the penetration of fragments is initiated [R

= R

(touching state) +

(neck length parameter)]. First, the alpha decay half-lives are calculated for light and heavy nuclei, and

points are obtained by optimizing the neck length parameter. These

points are further employed to fix the Q-value dependent turning point (

(Q)). Then, using the (

(Q)) relation, the decay half-lives are computed, and the calculated results are compared with the available theoretical and experimental data. The isotopical trend of

and P is studied with respect to the mass number of the parent and daughter nucleus, respectively. The CR and HPR channels are also explored, and a comparison of calculated data is conducted with the available literature. Comparative analysis of the fragmentation potential and preformation probability is carried out for alpha decay and SF. The mass distribution of the nuclei is studied as a function of fragment mass (A

) by considering the spherical and hot-compact deformation of the decaying fragments. Finally, the most probable fission fragments are identified using the fragmentation structure, and the corresponding fission fragment total kinetic energy of the identified fragments is calculated and compared with available data, wherever applicable.
Prospects of CP violation in Λ decay with a polarized electron beam at the STCF*
Authors: Zeng 曾 Sheng 胜 , Xu 徐 Yue 月 , Zhou 周 Xiao-Rong 小蓉 , Qin 秦 Jia-Jia 佳佳 , Zheng 郑 Bo 波 
Published: July 2023

Abstract
Based on

Monte Carlo (MC) events produced from a longitudinally-polarized electron beam, the sensitivity of the

violation of Λ decay is studied using fast simulation software. In addition, the

decay can be used to optimize the detector response using the interface provided by the fast simulation software. In the future, the STCF is expected to obtain 3.4 trillion

events, and the statistical sensitivity of the

violation of Λ decay via the

process is expected to reach

when the electron beam polarization is 80%.
Experimental, numerical and analytical evaluation of

j
×
B

-thrust for fast-liquid-metal-flow divertor systems of nuclear fusion devices
Authors: Saenz F. , Fisher A.E. , Al-Salami J. , Wynne B. , Sun Z. , Tanaka T. , Kunugi T. , Yagi J. , Kusumi K. , Wu Y. , Yamazaki G. , Hu C. , Hanada K. , Kolemen E. 
Published: July 2023

Abstract
Divertor systems of fusion devices are exposed to intense heat loads from plasmas, which degrade solid plasma-facing components. Fast liquid metal (LM) flow divertors may be more advantageous for this purpose but have risk of piling due to intense magnetohydrodynamic (MHD) drag. However, severe deceleration of the flow could be countered with the injection of currents that are transverse to external magnetic fields, allowing to thrust the flow with

j
×
B

(Lorentz) forces. Given that the injection of currents as an approach to propel LM-divertor flows has remained experimentally understudied, this article focuses on the evaluation of

j
×
B

-thrust and finding its drawbacks.

j
×
B

-thrust was experimentally tested with free-surface-LM flows, a vertical magnetic field and an externally applied current. Experiments were reviewed with a theoretical model, showing agreement in the trends of theory and experiments. Full 3D-MHD-free-surface-flow simulations were also performed with FreeMHD and confirmed the sensitivity to unstable flow behavior in LM systems when applying external currents. Furthermore, excessive power requirements are expected for the implementation of

j
×
B

-thrust at the reactor scale, making these systems inefficient for commercial devices. This paper evidences that the simple operation of a LM-flow divertor with

j
×
B

-thrust, without any of the instabilities caused from reactor plasmas or parasitic currents, already presents intrinsic challenges.
Kinetic modelling of start-up runaway electrons in KSTAR and ITER
Authors: Lee Y. , de Vries P.C. , Aleynikov P. , Lee J. , Lee Y.-S. , Kim H.-T. , Mineev A.B. , Lee K.-D. , Bak J.-G. , Juhn J.-W. , Na Y.-S. 
Published: July 2023

Abstract
Understanding the formation of start-up runaway electrons (REs) is essential to ensure successful plasma initiation in ITER. The design of ITER start-up scenarios requires not only predictive simulations but also a validation of assumptions. The objective of this study is to strengthen the physical background required for predictive simulations aimed at ITER plasma start-up design, by validating the model assumptions. Through kinetic simulations, this study examines the validity of steady-state models for Dreicer generation under slowly-varying time scales relevant to plasma start-up and investigates the finite energy effect, commonly neglected, on the runaway avalanche growth rate. The research findings provide insights into situations where kinetic simulations are necessary. To secure a margin-of-control scheme without kinetic simulation, we suggest a strategy of scanning the Coulomb logarithm in fluid simulations as an alternative to predict runaway current takeover and avoid RE dominant scenarios. Ultimately, this paper seeks to offer a robust physical background, practically supporting the successful design of ITER start-up scenarios.
First experimental results of the PAM LHCD launcher at 2.45 GHz on EAST
Authors: Li M.H. , Liu L. , Wang M. , Yang Y. , Wu C.B. , Li Y.C. , Yan G.H. , Ding B.J. , Zhao L.M. , Wu Z.G. , Jia H. , Zhou W.Y. , Goniche M. , Hillairet J. , Peysson Y. , Ekedahl A. , Zang Q. , Zhang L. , Zhang X.J. , Sun Y.W. , Qian J.P. , Gong X.Z. 
Published: July 2023

Abstract
This paper presents the first results of a passive active multijunction (PAM) launcher at 2.45 GHz during the lower hybrid current drive (LHCD) experiments on EAST. Good coupling performance with a power reflection coefficient (RC) ∼3% has been achieved at the plasma–antenna distance up to ∼11 cm in L-mode edge plasmas without local gas puffing near the PAM launcher. Reliable power coupling of this PAM during the edge perturbations induced by type I edge localized modes (ELMs) has been successfully demonstrated. Compared with the old full active multijunction (FAM) launcher, the new PAM can be placed ∼2 cm further away from the plasma in normal operations, which is in good agreement with the previous prediction (Li et al 2019 Fusion Eng. Des.
147 111 250), by the linear wave–plasma coupling code ALOHA (Hillairet et al 2010 Nucl. Fusion
50 125 010). The flexibility of the power spectrum by changing the phase difference between adjacent modules was validated and ray-tracing/Fokker–Planck simulations can reproduce the experimental features. The achievable power handling is as high as 25 MW m−2, although with a shot pulse length of ∼10 s. The first experiment successfully demonstrated the coupling performance of a PAM launcher at low density and this launcher construction provides helpful engineering experience for the 4.6 GHz PAM development in the near future on EAST.
Effect of pH control and uncoupled carbon and nitrogen feeding strategy on enrichment of mixed microbial culture for polyhydroxyalkanoates production
Authors: Khor J W , Yoon L W , Nguyen-Huynh T-Thy , Ng W L , Low J H 
Published: July 2023

Abstract
Polyhydroxyalkanoates (PHA) production via a combination of mixed microbial culture (MMC) and waste carbon substrate has shown to be a more economical solution compared to pure culture process. Although crude glycerol has been proven as a promising feedstock, there are still limited study on the effect of operating conditions such as pH and nutrient feeding strategy on PHA production using crude glycerol. This study aims to investigate the feasibility of enrichment of PHA accumulators in mixed culture without pH control when uncoupled carbon and nitrogen feeding strategy was implemented. Enrichment was conducted in a sequencing batch reactor (SBR) with cycle duration of 24 hr and organic loading rate (OLR) of 1000 mg C/(L.d). Feast and famine strategy was successfully implemented, with feast/famine (F/F) ratio of 0.43 indicating good PHA storage response. The cyclic profile of substrate and PHA concentration has also proven the successful implementation of F/F regime. Biomass concentration of 779 mg/L was obtained by the end of week 5 with PHA content of 16.2% g PHA/g VSS. During the cycle, pH between 6 to 8 was recorded which suggests that extreme acidic or alkaline condition detrimental to PHA accumulators cultivation was not observed in this study. This study demonstrates that enrichment of PHA accumulators is feasible when pH is not controlled under uncoupled C and N feeding strategy.