bluuebunny/crossref_metadata_2025 huggingface dataset:
Arsenic trioxide alters the differentiation of mouse embryonic stem cell into cardiomyocytes
Authors: Rebuzzini Paola , Cebral Elisa , Fassina Lorenzo , Alberto Redi Carlo , Zuccotti Maurizio , Garagna Silvia
Published: October 2015

Chronic arsenic exposure is associated with increased morbidity and mortality for cardiovascular diseases. Arsenic increases myocardial infarction mortality in young adulthood, suggesting that exposure during foetal life correlates with cardiac alterations emerging later. Here, we investigated the mechanisms of arsenic trioxide (ATO) cardiomyocytes disruption during their differentiation from mouse embryonic stem cells. Throughout 15 days of differentiation in the presence of ATO (0.1, 0.5, 1.0 μM) we analysed: the expression of i) marker genes of mesoderm (day 4), myofibrillogenic commitment (day 7) and post-natal-like cardiomyocytes (day 15); ii) sarcomeric proteins and their organisation; iii) Connexin 43 and iv) the kinematics contractile properties of syncytia. The higher the dose used, the earlier the stage of differentiation affected (mesoderm commitment, 1.0 μM). At 0.5 or 1.0 μM the expression of cardiomyocyte marker genes is altered. Even at 0.1 μM, ATO leads to reduction and skewed ratio of sarcomeric proteins and to a rarefied distribution of Connexin 43 cardiac junctions. These alterations contribute to the dysruption of the sarcomere and syncytium organisation and to the impairment of kinematic parameters of cardiomyocyte function. This study contributes insights into the mechanistic comprehension of cardiac diseases caused byin uteroarsenic exposure.
Direct patterning of organic conductors on knitted textiles for long-term electrocardiography
Authors: Takamatsu Seiichi , Lonjaret Thomas , Crisp Dakota , Badier Jean-Michel , Malliaras George G. , Ismailova Esma
Published: October 2015

Wearable sensors are receiving a great deal of attention as they offer the potential to become a key technological tool for healthcare. In order for this potential to come to fruition, new electroactive materials endowing high performance need to be integrated with textiles. Here we present a simple and reliable technique that allows the patterning of conducting polymers on textiles. Electrodes fabricated using this technique showed a low impedance contact with human skin, were able to record high quality electrocardiograms at rest and determine heart rate even when the wearer was in motion. This work paves the way towards imperceptible electrophysiology sensors for human health monitoring.
Coupled Mechanisms of Precipitation and Atomization in Burning Nanofluid Fuel Droplets
Authors: Miglani Ankur , Basu Saptarshi
Published: October 2015

Understanding the combustion characteristics of fuel droplets laden with energetic nanoparticles (NP) is pivotal for lowering ignition delay, reducing pollutant emissions and increasing the combustion efficiency in next generation combustors. In this study, first we elucidate the feedback coupling between two key interacting mechanisms, namely, secondary atomization and particle agglomeration; that govern the effective mass fraction of NPs within the droplet. Second, we show how the initial NP concentration modulates their relative dominance leading to a master-slave configuration. Secondary atomization of novel nanofuels is a crucial process since it enables an effective transport of dispersed NPs to the flame (a pre-requisite condition for NPs to burn). Contrarily, NP agglomeration at the droplet surface leads to shell formation thereby retaining NPs inside the droplet. In particular, we show that at dense concentrations shell formation (master process) dominates over secondary atomization (slave) while at dilute particle loading it is the high frequency bubble ejections (master) that disrupt shell formation (slave) through its rupture and continuous outflux of NPs. This results in distinct combustion residues at dilute and dense concentrations, thereby providing a method of manufacturing flame synthesized microstructures with distinct morphologies.
Magnetoelectric effects in the skyrmion host material Cu2OSeO3
Authors: Ruff E. , Lunkenheimer P. , Loidl A. , Berger H. , Krohns S.
Published: October 2015

Insulating helimagnetic Cu2OSeO3 shows sizeable magnetoelectric effects in its skyrmion phase. Using magnetization measurements, magneto-current analysis and dielectric spectroscopy, we provide a thorough investigation of magnetoelectric coupling, polarization and dielectric constants of the ordered magnetic and polar phases of single-crystalline Cu2OSeO3 in external magnetic fields up to 150 mT and at temperatures below 60 K. From these measurements we construct a detailed phase diagram. Especially, the skyrmion phase and the metamagnetic transition of helical to conical spin order are characterized in detail. Finally we address the question if there is any signature of polar order that can be switched by an external electric field, which would imply multiferroic behaviour of Cu2OSeO3.
Lab-on-fiber technology: a new vision for chemical and biological sensing
Authors: Ricciardi Armando , Crescitelli Alessio , Vaiano Patrizio , Quero Giuseppe , Consales Marco , Pisco Marco , Esposito Emanuela , Cusano Andrea
Published: October 2015

The integration on the optical fiber tip of nanostructures supporting resonant modes highly sensitive to local modifications of the surrounding environment allows the development of lab-on-fiber based biosensors.
Mesoporous silica-coated quantum dots functionalized with folic acid for lung cancer cell imaging
Authors: Zhou Shang , Huo Danqun , Hou Changjun , Yang Mei , Fa Huanbao , Xia Cui , Chen Mei
Published: October 2015

A folate-functionalized mesoporous silica-coated CdTe QD fluorescent probe is developed to distinguish tumor cells from normal cells. It exhibited superior selectivity and lower cytotoxicity than the unfunctionalized probe.
A membrane extraction method for trace level phosphate analysis
Authors: Asaoka Satoshi , Kiso Yoshiaki , Nagai Masahiro , Okamura Hideo
Published: October 2015

A simple method for trace level phosphate analysis was developed using a membrane extraction technique..
Quantitative comparative analysis of main isoflavonoids and saponins in the Huangqi–Sanqi herb pair using ultra-high-performance liquid chromatography coupled with triple quadrupole electrospray tandem mass spectrometry
Authors: Zhang Jing , Xu Wen , Chen Yuanyuan , Huang Juan , Bai Junqi , Qiu Xiaohui , Huang Zhihai
Published: October 2015

The content changes of 14 components of the Huangqi–Sanqi herb pair in the decoction process were compared and evaluated.
Ultraviolet spectroscopy and supervised pattern recognition methods for authentication of transgenic and non-transgenic soybean oils
Authors: Alves F. C. G. B. S. , Valderrama P.
Published: October 2015

The authentication of transgenic and non-transgenic soybean oils was performed by using UV spectroscopy and PLS-DA.
Human body odor discrimination by GC-MS spectra data mining
Authors: Jha Sunil Kr. , Marina Ninoslav , Liu Chuanjun , Hayashi Kenshi
Published: October 2015

The present study explores individual identity perception by analyzing the chemical peak information in the gas chromatography-mass spectrometry (GC-MS) spectra of body odor samples with standard data mining approaches.
Stabilizing bijels using a mixture of fumed silica nanoparticles
Authors: Cai Dongyu , Clegg Paul S.
Published: October 2015

We demonstrate the fabrication of bicontinuous pickering emulsions (bijels) using “off the shelf” particles.
Protein delivery with cell-penetrating poly(disulfide)s
Authors: Gasparini Giulio , Matile Stefan
Published: October 2015

The combination of cell-penetrating poly(disulfide)s with biotin–streptavidin biotechnology affords a general method for the delivery of proteins into cells.
Rational design of a degradable polyanion for layer-by-layer assembly for encapsulation and release of cationic functional biomolecules
Authors: Hiraoka Ryuichi , Funasaki Yuichi , Ishii Jun , Maruyama Tatsuo
Published: October 2015

We designed and synthesized a novel degradable polyanion, poly(phthalic ethylene glycol ester), that assembles with various polycationic biomolecules to form layer-by-layer films to encapsulate and release physiologically active biomolecules.
Excited state nonadiabatic dynamics of bare and hydrated anionic gold clusters Au3−[H2O]n (n = 0–2)
Authors: Lisinetskaya Polina G. , Braun Christian , Proch Sebastian , Kim Young Dok , Ganteför Gerd , Mitrić Roland
Published: October 2015

We present a joint theoretical and experimental study of excited state dynamics in pure and hydrated anionic gold clusters Au3−[H2O]n (n = 0–2).
Co-operative motion of multiple benzoquinone disks at the air–water interface
Authors: Satterwhite-Warden Jennifer E. , Kondepudi Dilip K. , Dixon James A. , Rusling James F.
Published: October 2015

Co-operative locomotion of multiple benzoquinone particles was observed at the air–water interface and driven by heterogeneous interfacial tension fields formed on the water surface.
Single water solvation dynamics in the 4-aminobenzonitrile–water cluster cation revealed by picosecond time-resolved infrared spectroscopy
Authors: Miyazaki Mitsuhiko , Nakamura Takashi , Wohlgemuth Matthias , Mitrić Roland , Dopfer Otto , Fujii Masaaki
Published: October 2015

The excess energy of photoionization can control the time scale of single water solvent orientation dynamics from picoseconds to infinitely long trapping in a local minimum.
Resistive switching memory devices based on electrical conductance tuning in poly(4-vinyl phenol)–oxadiazole composites
Authors: Sun Yanmei , Miao Fengjuan , Li Rui , Wen Dianzhong
Published: October 2015

Nonvolatile memory devices, based on electrical conductance tuning in thin films of poly(4-vinyl phenol) (PVP) and 2-(4-tert-butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole (PBD) composites, are fabricated.
On the diatropic perimeter of iterated altan-molecules
Authors: Monaco Guglielmo
Published: October 2015

Ab initio calculations confirm that the design of large paratropic circuits through altanisation fails in altan-[10,5]coronene. This molecule is predicted to be an open-shell singlet biradical, like the cycloacene that it contains.
Inhibition mechanism of SAHA in HDAC: a revisit
Authors: Zhou Jingwei , Wu Ruibo , Luo Hai-Bin
Published: October 2015

The “Metal-dependent” mechanism: the remote second metal site (K+/Ca2+) that determines the protonation of SAHA.
Co(ii) complexes loaded into metal–organic frameworks as efficient heterogeneous catalysts for aerobic epoxidation of olefins
Authors: Wang Jingjing , Yang Mu , Dong Wenjun , Jin Zhaokui , Tang Jia , Fan Shuang , Lu Yunfeng , Wang Ge
Published: October 2015

An efficient cobalt(ii)-anchored Cr-MOF (Cr-MIL-101-NH2) catalyst, Co(ii)@Cr-MIL-101-P2I, has been successfully synthesized by one-pot modification of the terminal amino group with pyridine-2-aldehyde and anchoring of Co(ii) ions into the mesoporous Cr-MOF support.
Direct synthesis of LPG from syngas in a slurry phase
Authors: Zhang Qianwen , Ma Ting , Zhao Ming , Tomonobu Teppei , Li Xiaohong
Published: October 2015

An original catalytic system for the synthesis of light hydrocarbons from syngas over a hybrid catalyst in the slurry phase was investigated.
Development of silica-supported frustrated Lewis pairs: highly active transition metal-free catalysts for the Z-selective reduction of alkynes
Authors: Szeto Kai C. , Sahyoun Wissam , Merle Nicolas , Castelbou Jessica Llop , Popoff Nicolas , Lefebvre Frédéric , Raynaud Jean , Godard Cyril , Claver Carmen , Delevoye Laurent , Gauvin Régis M. , Taoufik Mostafa
Published: October 2015

Supported Lewis acid/base systems based have been prepared and characterized.
Nucleophile-mediated oxa-Michael addition reactions of divinyl sulfone – a thiol-free option for step-growth polymerisations
Authors: Strasser Simone , Slugovc Christian
Published: October 2015

The first example of an aa–bb-type nucleophile-mediated oxa-Michael addition polymerisation reaction is reported.
Molecular iodine adsorption within Hofmann-type structures M(L)[M′(CN)4] (M = Ni, Co; M′ = Ni, Pd, Pt): impact of their composition
Authors: Massasso Giovanni , Rodríguez-Castillo María , Long Jérôme , Haines Julien , Devautour-Vinot Sabine , Maurin Guillaume , Grandjean Agnès , Onida Barbara , Donnadieu Bruno , Larionova Joulia , Guérin Christian , Guari Yannick
Published: October 2015

Hofmann-type clathrate frameworks MII(pz)[M′II(CN)4] are able to efficiently and reversibly capture iodine in the gas phase and in solution.
Compositional dependence of anomalous thermal expansion in perovskite-like ABX3formates
Authors: Collings Ines E. , Hill Joshua A. , Cairns Andrew B. , Cooper Richard I. , Thompson Amber L. , Parker Julia E. , Tang Chiu C. , Goodwin Andrew L.
Published: October 2015

Thermal expansion in ABX3formates is correlated to the size and molecular anisotropy of the A- and B-site cations.
Unparalleled lithium and sodium superionic conduction in solid electrolytes with large monovalent cage-like anions
Authors: Tang Wan Si , Unemoto Atsushi , Zhou Wei , Stavila Vitalie , Matsuo Motoaki , Wu Hui , Orimo Shin-ichi , Udovic Terrence J.
Published: October 2015

Above their order–disorder transitions, both LiCB11H12and NaCB11H12electrolytes exhibit solid-state conductivities easily exceeding 0.1 S cm−1, unmatched by any other known polycrystalline materials at these temperatures.
Macromolecule-based platforms for developing tailor-made formulations for scale inhibition
Authors: Sheikhi Amir , Li Na , van de Ven Theo G. M. , Kakkar Ashok
Published: October 2015

Macromolecules provide unique opportunities to inhibit scaling, a complex problem and a key challenge faced by water-based industries.
Towards multi-purpose biorefinery platforms for the valorisation of red grape pomace: production of polyphenols, volatile fatty acids, polyhydroxyalkanoates and biogas
Authors: Martinez Gonzalo A. , Rebecchi Stefano , Decorti Deborha , Domingos Joana M. B. , Natolino Andrea , Del Rio Daniele , Bertin Lorenzo , Da Porto Carla , Fava Fabio
Published: October 2015

Development of a multi-purpose four step-cascading biorefinery scheme for the valorization of red grape pomace.
Thermoresponsive fluorinated small-molecule drugs: a new concept for efficient localized chemotherapy
Authors: Clavel Catherine M. , Nowak-Sliwinska Patrycja , Păunescu Emilia , Dyson Paul J.
Published: October 2015

We review the drugs used in combination with hyperthermia for cancer therapy and recent advances on small thermoresponsive molecules.
Alkaline-assisted stannation of beta zeolite as a scalable route to Lewis-acid catalysts for the valorisation of renewables
Authors: Dapsens Pierre Y. , Mondelli Cecilia , Pérez-Ramírez Javier
Published: October 2015

Alkaline-assisted stannation comprises a scalable one-pot method to incorporate tin centres with a Lewis-acid character in beta zeolite for the isomerisation of renewables.
Synthesis and characterization of o-fluorosulfinylaniline. A comparative vibrational study of fluorinated sulfinylaniline series
Authors: Páez Jerez Ana L. , Alonso de Armiño Diego J. , Robles Norma L.
Published: October 2015

A complete vibrational study of a new fluoro substituted sulfinylaniline was performed in comparison with m- and p-isomers.
Pollutant capturing SERS substrate: porous boron nitride microfibers with uniform silver nanoparticle decoration
Authors: Dai Pengcheng , Xue Yanming , Wang Xuebin , Weng Qunhong , Zhang Chao , Jiang Xiangfen , Tang Daiming , Wang Xi , Kawamoto Naoyuki , Ide Yusuke , Mitome Masanori , Golberg Dmitri , Bando Yoshio
Published: October 2015

We designed a novel pollutant capturing surface enhanced Raman spectroscopy (SERS) substrate based on boron nitride microfibers uniformly decorated with silver nanoparticles.
Covalent bonding of YIGSR and RGD to PEDOT/PSS/MWCNT-COOH composite material to improve the neural interface
Authors: Wang Kun , Tang Rong-Yu , Zhao Xiao-Bo , Li Jun-Jie , Lang Yi-Ran , Jiang Xiao-Xia , Sun Hong-Ji , Lin Qiu-Xia , Wang Chang-Yong
Published: October 2015

The development of coating materials for neural interfaces has been a pursued to improve the electrical, mechanical and biological performances.
Complementary isonitrile-based multicomponent reactions for the synthesis of diversified cytotoxic hemiasterlin analogues
Authors: Lesma Giordano , Bassanini Ivan , Bortolozzi Roberta , Colletto Chiara , Bai Ruoli , Hamel Ernest , Meneghetti Fiorella , Rainoldi Giulia , Stucchi Mattia , Sacchetti Alessandro , Silvani Alessandra , Viola Giampietro
Published: October 2015

A multicomponent strategy proved to be suitable for the concise and convergent generation of hemiasterlin derivatives, also including non-peptidic analogues.
Synthesis of dibenzylamino-1-methylcyclohexanol and dibenzylamino-1-trifluoromethylcyclohexanol isomers
Authors: Jones D. Heulyn , Bresciani Stefano , Tellam James P. , Wojno Justyna , Cooper Anthony W. J. , Kennedy Alan R. , Tomkinson Nicholas C. O.
Published: October 2015

Saturated isomers of the 1,2- 1,3- and 1,4-aminophenol pharmacophore have been prepared.
Hydrazone–palladium catalyzed annulation of 1-allyl-2-bromobenzene derivatives with internal alkynes
Authors: Watanabe Kohei , Mino Takashi , Hatta Chikako , Ito Shisei , Sakamoto Masami
Published: October 2015

Annulation of 1-allyl-2-bromobenzene derivatives with internal alkynes using a hydrazone–palladium catalyst afforded polysubstituted naphthalene derivatives in good to high yields.
DNA bases ring-expanded with a cyclopentadiene free radical: a theoretical investigation of building blocks with diradical character
Authors: Zhao Peiwen , Bu Yuxiang
Published: October 2015

In this work, we computationally design radical nucleobases which possess improved electronic properties, especially diradical properties through introducing a cyclopentadiene radical.
Blue AIE luminogens bearing methyl groups: different linkage position, different number of methyl groups, and different intramolecular conjugation
Authors: Huang Jing , Yang Min , Yang Jie , Tang Runli , Ye Shanghui , Li Qianqian , Li Zhen
Published: October 2015

By changing the linkage position and linked number of the methyl group, the resultant AIE luminogens demonstrated adjustable intramolecular conjugation.
Synthesis of new U-shaped azobenzene liquid crystals for photoswitching properties
Authors: Rahman Md Lutfor , Sarkar Shaheen M. , Yusoff Mashitah M. , Kumar Sandeep , Tschierske Carsten
Published: October 2015

New U-shaped azobenzene liquid crystals can be used for creation of optical storage devices. Gray circle in the middle is the UV irradiated area to form disordered isotropic phase whereas blue-green area is protected from the light by mask remains.
Preparation and characterization of novel porous zeolite beta coating/PSSF composite in fluoride media
Authors: Wang Tao , Zhang Huiping , Yan Ying
Published: October 2015

A novel porous zeolite beta coating/PSSF composite was prepared by secondary growth method in fluoride media.
Synthesis, characterization and optoelectronic investigations of bithiophene substituted 1,3,4-oxadiazole derivatives as green fluorescent materials
Authors: Deshapande Narahari , Belavagi Ningaraddi S. , Sunagar Manjunath G. , Gaonkar Supreet , Pujar G. H. , Wari M. N. , Inamdar S. R. , Khazi Imtiyaz Ahmed M.
Published: October 2015

Design and synthesis of novel bithiophene substituted oxadiazoles and exploration of their optoelectronic properties.
Super long-life supercapacitor electrode materials based on hierarchical porous hollow carbon microcapsules
Authors: Ran Fen , Zhang Xuanxuan , Liu Yuansen , Shen Kuiwen , Niu Xiaoqin , Tan Yongtao , Kong Lingbin , Kang Long , Xu Changan , Chen Shaowei
Published: October 2015

Remarkable supercapacitor electrodes with a high specific supercapacitance and a super long cycle life were achieved by using hierarchical porous hollow carbon microcapsules (HPHCMs) as active materials.
Noble metal ions in CeO2and TiO2: synthesis, structure and catalytic properties
Authors: Bera Parthasarathi , Hegde M. S.
Published: October 2015

CeO2and TiO2based noble metal ionic catalysts show very high catalytic activities toward several reactions such as auto exhaust, water gas shift, H2+ O2recombination compared to supported nanometal catalysts due to their electronic interactions.
Temporal distributions of functional microbes and putative genes associated with halogenated phenol anaerobic dehalogenation and further mineralization
Authors: Li Zhi-ling , Nan Jun , Yang Jia-qi , Jin Xiao , Katayama Arata , Wang Ai-jie
Published: October 2015

Growth interactions of functional dehalogenators, degraders and genes (cprAandbamB) during anaerobic mineralization of HACs in an enriched consortium.
A luminescent europium MOF containing Lewis basic pyridyl site for highly selective sensing of o-, m- and p-nitrophenol
Authors: Wang Yan-Qin , Tan Qing-Hua , Liu Hou-Ting , -Sun Wei , Liu Zhi-Liang
Published: October 2015

A new Eu–MOF constructed by a multidentate ligand with a Lewis basic pyridyl site shows highly luminescent selective sensing of the o-, m- and p-nitrophenol.
Thermoelectric performances of graphene/polyaniline composites prepared by one-step electrosynthesis
Authors: Harima Yutaka , Fukumoto Saki , Zhang Lu , Jiang Xiaoqing , Yano Jun , Inumaru Kei , Imae Ichiro
Published: October 2015

Graphene/polyaniline composites prepared by one-step electrosynthesis of graphene oxide and aniline monomer give a dimensionless thermoelectric figure-of-merit (ZT) of 0.009.
Phenothiazine-based bipolar green-emitters containing benzimidazole units: synthesis, photophysical and electroluminescence properties
Authors: Bodedla Govardhana Babu , Justin Thomas K. R. , Kumar Sandeep , Jou Jwo-Huei , Li Chieh-Ju
Published: October 2015

A series of bipolar green emitters bearing hole-transporting phenothiazine and electron-transporting N-phenylbenzimidazole are synthesized and characterized by their photophysical, electrochemical and thermal properties.
Influence of structures on the mechanical and absorption properties of a textile pile debridement material and its biological evaluation
Authors: Fu Yijun , Wang Lu , Wang Fujun , Guan Guoping , Hu Xingyou , Xie Qixue , Wang Wenzu , King Martin W.
Published: October 2015

Textile pile debridement materials were prepared by sliver knitting and back-coating. They gave superior mechanical performance, greater liquid absorption and satisfactory biocompatibility compared to a cotton gauze control sample.
Immobilizing and de-immobilizing enzymes on mesoporous silica
Authors: Zlateski Vladimir , Keller Tobias C. , Pérez-Ramírez Javier , Grass Robert N.
Published: October 2015

β-Glucosidase was immobilised as a model enzyme within silica mesocellular foam (MCF) at a high loading, further entrapped to achieve higher stability and released unharmed upon need by applying fluoride buffered solutions.
A genomics-led approach to deciphering the mechanism of thiotetronate antibiotic biosynthesis
Authors: Tao W. , Yurkovich M. E. , Wen S. , Lebe K. E. , Samborskyy M. , Liu Y. , Yang A. , Liu Y. , Ju Y. , Deng Z. , Tosin M. , Sun Y. , Leadlay P. F.
Published: October 2015

A novel mechanism is proposed for ring formation in the biosynthetic pathway to thiotetronate antibiotics thiolactomycin and Tü 3010.
Specifically horizontally tethered DNA probes on Au surfaces allow labelled and label-free DNA detection using SERS and electrochemically driven melting
Authors: Papadopoulou E. , Gale N. , Thompson J. F. , Fleming T. A. , Brown T. , Bartlett P. N.
Published: October 2015

Controlled covalent attachment of dsDNA horizontally orientated on a gold surface is achieved through the use of a single surface-linker located approximately half way along the attached DNA probe strand.
Potassium ion-selective fluorescent and pH independent nanosensors based on functionalized polyether macrocycles
Authors: Jarolímová Zdeňka , Vishe Mahesh , Lacour Jérôme , Bakker Eric
Published: October 2015

We present here a new family of pH insensitive ion-selective optical sensors based on emulsified nanospheres containing densely functionalized 15-, 16-, 18- and 20-membered pyreneamide derivatives.
Buckling of paramagnetic chains in soft gels
Authors: Huang Shilin , Pessot Giorgio , Cremer Peet , Weeber Rudolf , Holm Christian , Nowak Johannes , Odenbach Stefan , Menzel Andreas M. , Auernhammer Günter K.
Published: October 2015

Paramagnetic particle chains in soft polymer gels can show pronounced buckling deformation under perpendicular external magnetic fields.
One-pot synthesis of carbon-coated Ni5P4 nanoparticles and CoP nanorods for high-rate and high-stability lithium-ion batteries
Authors: Jiang Jun , Wang Chunde , Li Wei , Yang Qing
Published: October 2015

Here, a facile one-pot synthetic route to carbon coated Ni5P4 nanoparticles and CoP nanorods is developed, and both of them show high-rate and high-stability performances for lithium storage.
Nitrogen and fluorine co-doped graphene as a high-performance anode material for lithium-ion batteries
Authors: Huang Shizheng , Li Yu , Feng Yiyu , An Haoran , Long Peng , Qin Chengqun , Feng Wei
Published: October 2015

Nitrogen and fluorine co-doped graphene (NFG) with the N and F content as high as 3.24 and 10.9 at% respectively was prepared through the hydrothermal reaction of trimethylamine tri(hydrofluoride) [(C2H5)3N·3HF] and aqueous-dispersed graphene oxide (GO) as the anode material for lithium ion batteries (LIBs).
DFT-based force field development for noble gas adsorption in metal organic frameworks
Authors: Demir Hakan , Greathouse Jeffery A. , Staiger Chad L. , Perry IV John J. , Allendorf Mark D. , Sholl David S.
Published: October 2015

Density functional theory (DFT) based force fields (FFs) for Ar and Xe adsorption in M-MOF-74 (M = Co, Ni, Zn, Mg), ZIF-8 and HKUST-1 were developed using three DFT functionals (PBE-D2, vdW-DF, vdW-DF2) in periodic systems.
Bi-functional Li2B12H12 for energy storage and conversion applications: solid-state electrolyte and luminescent down-conversion dye
Authors: Teprovich Joseph A. , Colón-Mercado Héctor , Washington II Aaron L. , Ward Patrick A. , Greenway Scott , Missimer David M. , Hartman Hope , Velten Josef , Christian Jonathan H. , Zidan Ragaiy
Published: October 2015

Li2B12H12 is a bi-functional material that can be used as a superionic conductor in all solid-state lithium ion batteries and as a blue luminescent down-conversion dye.
A brilliant cryogenic magnetic coolant: magnetic and magnetocaloric study of ferromagnetically coupled GdF3
Authors: Chen Yan-Cong , Prokleška Jan , Xu Wei-Jian , Liu Jun-Liang , Liu Jiang , Zhang Wei-Xiong , Jia Jian-Hua , Sechovský Vladimír , Tong Ming-Liang
Published: October 2015

The magnetocaloric effect of an inorganic framework material with repeating GdF3 units has been studied using isothermal magnetization and heat capacity measurements.
Adaptive robust control with extended disturbance observer for motion control of DC motors
Authors: Yang Yanyu , Wang Yong , Jia Ping
Published: October 2015

This Letter proposes an extended disturbance observer (EDO) based adaptive robust control method for motion control of DC motors. An adaptive part for structured uncertainties, an EDO for unstructured uncertainties and a feedback robust law for global robustness are designed in this method. The theoretical analysis guarantees a prescribed tracking performance under various uncertainties and comparative numerical simulation shows the excellent high‐precision performance of proposed method on DC motor motion control.
Ultra‐low‐power image signal processor for smart camera applications
Authors: Liu Z. , Park T. , Park H.S. , Kim N.S.
Published: October 2015

Among thriving cyber physical systems, smart camera applications require to run both image sensors and image signal processors (ISPs) to capture images whenever necessary. Owing to the nature of such applications (i.e. constantly capturing images and analysing the images to detect any event of interest), the image sensor and ISP become the two most energy consuming components in smart camera applications. It is started with the intuition that the perceptive quality of images is not strongly correlated with the accuracy of object detection algorithms and a technique that requires only minor modifications to the baseline ISP is proposed but notably reduces the ISP energy consumption in object detection mode for smart camera applications. It is demonstrated that the ISP reduces energy consumption by 33% compared with the baseline ISP energy while degrading face detection accuracy by only 3%.
Signal strength readout and miniaturised antenna for metal‐mountable UHF RFID threshold temperature sensor tag
Authors: Björninen Toni , Yang Fan
Published: October 2015

A new method for the wireless monitoring of a battery‐free threshold temperature sensor based on a passive ultra‐high‐frequency radio‐frequency identification (RFID) tag integrated with a bimetal thermostat switch is presented. The strategic placement of the switch brings about a strong modification in the tag antenna impedance as the temperature crosses over a threshold value. Optimisation of the narrow‐band tag antenna to operate at the edges of the 902–928 MHz frequency‐hopping spread spectrum RFID in the different switch states provides separate sub‐bands for the readout above and below a threshold temperature. The results show that this enables an unambiguous sensor readout by monitoring the backscattered signal strength.
Subcutaneous Immunotherapy Improves the Symptomatology of Allergic Rhinitis
Authors: Lourenço Edmir , Caldeira Eduardo , Carvalho César , Cunha Marcelo , Carvalho Marcus , Passos Saulo
Published: October 2015

Introduction The relevance of allergic rhinitis is unquestionable. This condition affects people's quality of life and its incidence has increased over the last years.

Objective Thus, this study aims to analyze the effectiveness of subcutaneous injectable immunotherapy in cases of nasal itching, sneeze, rhinorrhea and nasal congestion in allergic rhinitis patients.

Methods In the present study, the same researcher analyzed the records of 281 patients. Furthermore, the researchers identified allergens through puncture cutaneous tests using standardized extracts containing acari, fungi, pet hair, flower pollen, and feathers. Then, the patients underwent treatment with subcutaneous specific immunotherapy, using four vaccine vials for desensitization, associated with environmental hygiene. The authors analyzed conditions of nasal itching, sneeze, rhinorrhea, and nasal congestion throughout the treatment, and assigned them with a score ranging from zero (0), meaning absence of these symptoms to three (3), for severe cases. The symptoms were statistically compared in the beginning, during, and after treatment.

Results In this study, authors analyzed the cases distribution according to age and the evolution of symptomatology according to the scores, comparing all phases of treatment. The average score for the entire population studied was 2.08 before treatment and 0.44 at the end. These results represent an overall improvement of ∼79% in symptomatology of allergic rhinitis in the studied population.

Conclusion The subcutaneous immunotherapy as treatment of allergic rhinitis led to a reduction in all symptoms studied, improving the quality of life of patients, proving itself as an important therapeutic tool for these pathological conditions.
Characterizing solid-state ignition of runaway chemical reactions in Ni-Al nanoscale multilayers under uniform heating
Authors: Fritz Gregory M. , Grzyb Jessica A. , Knio Omar M. , Grapes Michael D. , Weihs Timothy P.
Published: October 2015

Nanoscale layers of nickel and aluminum can mix rapidly to produce runaway reactions. While self-propagating high temperature synthesis reactions have been observed for decades, the solid-state ignition of these reactions has been challenging to study. Particularly elusive is characterization of the low-temperature chemical mixing that occurs just prior to the ignition of the runaway reaction. Characterization can be challenging due to inhomogeneous microstructures, uncontrollable heat losses, and the nonuniform distribution of heat throughout the material prior to ignition. To reduce the impact of these variables, we heat multilayered Ni/Al foils in a highly uniform manner and report ignition temperatures as low as 245 °C for heating rates ranging from 2000 °C/s to 50 000 °C/s. Igniting in this way reveals that there are four stages before the reaction is complete: heating to an ignition temperature, low temperature solid-state mixing, a separate high temperature solid-state mixing, and liquid-state mixing. Multiple bilayer spacings, heating rates, and heating times are compared to show that the ignition temperature is a function of the bilayer spacing. A symmetric numerical diffusion model is used to show that there is very little chemical mixing in the first 10 ms of heating but significant mixing after 50 ms. These predictions suggest that ignition temperatures should increase for the slowest heating rates but this trend could not be identified clearly. The modeling was also used to examine the kinetic parameters governing the early stages of solid-state diffusion and suggest that grain boundary diffusion is dominant.
Magnetic coupling at perovskite and rock-salt structured interfaces
Authors: Matvejeff M. , Ahvenniemi E. , Takahashi R. , Lippmaa M.
Published: October 2015

We study magnetic coupling between hole-doped manganite layers separated by either a perovskite or a rock-salt barrier of variable thickness. Both the type and the quality of the interface have a strong impact on the minimum critical barrier thickness where the manganite layers become magnetically decoupled. A rock-salt barrier layer only 1 unit cell (0.5 nm) thick remains insulating and is able to magnetically de-couple the electrode layers. The technique can therefore be used for developing high-performance planar oxide electronic devices such as magnetic tunnel junctions and quantum well structures that depend on magnetically and electronically sharp heterointerfaces.
Solid immersion lenses for enhancing the optical resolution of thermal and electroluminescence mapping of GaN-on-SiC transistors
Authors: Pomeroy J. W. , Kuball M.
Published: October 2015

Solid immersion lenses (SILs) are shown to greatly enhance optical spatial resolution when measuring AlGaN/GaN High Electron Mobility Transistors (HEMTs), taking advantage of the high refractive index of the SiC substrates commonly used for these devices. Solid immersion lenses can be applied to techniques such as electroluminescence emission microscopy and Raman thermography, aiding the development device physics models. Focused ion beam milling is used to fabricate solid immersion lenses in SiC substrates with a numerical aperture of 1.3. A lateral spatial resolution of 300 nm is demonstrated at an emission wavelength of 700 nm, and an axial spatial resolution of 1.7 ± 0.3 μm at a laser wavelength of 532 nm is demonstrated; this is an improvement of 2.5× and 5×, respectively, when compared with a conventional 0.5 numerical aperture objective lens without a SIL. These results highlight the benefit of applying the solid immersion lenses technique to the optical characterization of GaN HEMTs. Further improvements may be gained through aberration compensation and increasing the SIL numerical aperture.
Spreading dynamics of a partially wetting water film atop a MHz substrate vibration
Authors: Altshuler Gennady , Manor Ofer
Published: October 2015

A MHz vibration, or an acoustic wave, propagating in a solid substrate may support the convective spreading of a liquid film. Previous studies uncovered this ability for fully wetting silicon oil films under the excitation of a MHz Rayleigh surface acoustic wave (SAW), propagating in a lithium niobate substrate. Partially wetting de-ionized water films, however, appeared immune to this spreading mechanism. Here, we use both theory and experiment to reconsider this situation and show partially wetting water films may spread under the influence of a propagating MHz vibration. We demonstrate distinct capillary and convective (vibrational/acoustic) spreading regimes that are governed by a balance between convective and capillary mechanisms, manifested in the non-dimensional number θ3/We, where θ is the three phase contact angle of the liquid with the solid substrate and We ≡ ρU2H/γ; ρ, γ, H, and U are the liquid density, liquid/vapour surface tension, characteristic film thickness, and the characteristic velocity amplitude of the propagating vibration on the solid surface, respectively. Our main finding is that the vibration will support a continuous spreading motion of the liquid film out of a large reservoir if the convective mechanism prevails (θ3/We < 1); otherwise (θ3/We > 1), the dynamics of the film is governed by the capillary mechanism.
A semi-flexible model prediction for the polymerization force exerted by a living F-actin filament on a fixed wall
Authors: Pierleoni Carlo , Ciccotti Giovanni , Ryckaert Jean-Paul
Published: October 2015

We consider a single living semi-flexible filament with persistence length ℓp in chemical equilibrium with a solution of free monomers at fixed monomer chemical potential μ1 and fixed temperature T. While one end of the filament is chemically active with single monomer (de)polymerization steps, the other end is grafted normally to a rigid wall to mimic a rigid network from which the filament under consideration emerges. A second rigid wall, parallel to the grafting wall, is fixed at distance L < < ℓp from the filament seed. In supercritical conditions where monomer density ρ1 is higher than the critical density ρ1c, the filament tends to polymerize and impinges onto the second surface which, in suitable conditions (non-escaping filament regime), stops the filament growth. We first establish the grand-potential Ω(μ1, T, L) of this system treated as an ideal reactive mixture, and derive some general properties, in particular the filament size distribution and the force exerted by the living filament on the obstacle wall. We apply this formalism to the semi-flexible, living, discrete Wormlike chain model with step size d and persistence length ℓp, hitting a hard wall. Explicit properties require the computation of the mean force f̄i(L) exerted by the wall at L and associated potential f̄i(L)=−dWi(L)/dL on a filament of fixed size i. By original Monte-Carlo calculations for few filament lengths in a wide range of compression, we justify the use of the weak bending universal expressions of Gholami et al. [Phys. Rev. E 74, 041803 (2006)] over the whole non-escaping filament regime. For a filament of size i with contour length Lc = (i − 1) d, this universal form is rapidly growing from zero (non-compression state) to the buckling value fb(Lc,ℓp)=π2kBTℓp4Lc2 over a compression range much narrower than the size d of a monomer. Employing this universal form for living filaments, we find that the average force exerted by a living filament on a wall at distance L is in practice L independent and very close to the value of the stalling force FsH=(kBT/d)ln(ρˆ1) predicted by Hill, this expression being strictly valid in the rigid filament limit. The average filament force results from the product of the cumulative size fraction x=x(L,ℓp,ρˆ1), where the filament is in contact with the wall, times the buckling force on a filament of size Lc ≈ L, namely, FsH=xfb(L;ℓp). The observed L independence of FsH implies that x ∝ L−2 for given (ℓp,ρˆ1) and x∝lnρˆ1 for given (ℓp, L). At fixed (L,ρˆ1), one also has x∝ℓp−1 which indicates that the rigid filament limit ℓp → ∞ is a singular limit in which an infinite force has zero weight. Finally, we derive the physically relevant threshold for filament escaping in the case of actin filaments.
Rotomagnetic couplings influence on the magnetic properties of antiferrodistortive antiferromagnets
Authors: Eliseev Eugene A. , Glinchuk Maya D. , Gopalan Venkatraman , Morozovska Anna N.
Published: October 2015

We consider the possibility to control multiferroic properties of paraelectric antiferromagnets via biquadratic rotomagnetic (RM) coupling. Using Landau-Ginzburg-Devonshire theory for EuTiO3 as a prototype, we reveal a surprisingly strong influence of the RM coupling in the temperature region of antiferromagnetic and antiferrodistotive phases coexistence. In particular, the observed Neel temperature (TN = 5.5 K) was shown to be defined by RM coupling, while without the RM coupling, TN appeared to be much higher (TN ≈ 25.2 K). For weak RM coupling, the antiferromagnetic phase transition appeared to be of the second order, while it becomes of the first order for the high enough RM coupling values. RM coupling significantly complicates the phase diagrams governed by external magnetic or electric fields. The critical value of the electric field required to induce the transition from antiferromagnetic to ferromagnetic phase appeared essentially smaller than the one calculated without RM coupling that can be important for applications.
Parameter optimization in differential geometry based solvation models
Authors: Wang Bao , Wei G. W.
Published: October 2015

Differential geometry (DG) based solvation models are a new class of variational implicit solvent approaches that are able to avoid unphysical solvent-solute boundary definitions and associated geometric singularities, and dynamically couple polar and non-polar interactions in a self-consistent framework. Our earlier study indicates that DG based non-polar solvation model outperforms other methods in non-polar solvation energy predictions. However, the DG based full solvation model has not shown its superiority in solvation analysis, due to its difficulty in parametrization, which must ensure the stability of the solution of strongly coupled nonlinear Laplace-Beltrami and Poisson-Boltzmann equations. In this work, we introduce new parameter learning algorithms based on perturbation and convex optimization theories to stabilize the numerical solution and thus achieve an optimal parametrization of the DG based solvation models. An interesting feature of the present DG based solvation model is that it provides accurate solvation free energy predictions for both polar and non-polar molecules in a unified formulation. Extensive numerical experiment demonstrates that the present DG based solvation model delivers some of the most accurate predictions of the solvation free energies for a large number of molecules.
Three-dimensional gyrokinetic simulation of the relaxation of a magnetized temperature filament
Authors: Sydora R. D. , Morales G. J. , Maggs J. E. , Van Compernolle B.
Published: October 2015

An electromagnetic, 3D gyrokinetic particle code is used to study the relaxation of a magnetized electron temperature filament embedded in a large, uniform plasma of lower temperature. The study provides insight into the role played by unstable drift-Alfvén waves observed in a basic electron heat transport experiment [D. C. Pace et al., Phys. Plasmas 15, 122304 (2008)] in which anomalous cross-field transport has been documented. The simulation exhibits the early growth of temperature-gradient-driven, drift-Alfvén fluctuations that closely match the eigenmodes predicted by linear theory. At the onset of saturation, the unstable fluctuations display a spiral spatial pattern, similar to that observed in the laboratory, which causes the rearrangement of the temperature profile. After saturation of the linear instability, the system exhibits a markedly different behavior depending on the inclusion in the computation of modes without variation along the magnetic field, i.e., kz = 0. In their absence, the initial filament evolves into a broadened temperature profile, self-consistent with undamped, finite amplitude drift-Alfvén waves. But the inclusion of kz = 0 modes causes the destruction of the filament and damping of the drift-Alfvén modes leading to a final state consisting of undamped convective cells and multiple, smaller-scale filaments.
Influence of the shell thickness and charge distribution on the effective interaction between two like-charged hollow spheres
Authors: Angelescu Daniel G. , Caragheorgheopol Dan
Published: October 2015

The mean-force and the potential of the mean force between two like-charged spherical shells were investigated in the salt-free limit using the primitive model and Monte Carlo simulations. Apart from an angular homogeneous distribution, a discrete charge distribution where point charges localized on the shell outer surface followed an icosahedral arrangement was considered. The electrostatic coupling of the model system was altered by the presence of mono-, trivalent counterions or small dendrimers, each one bearing a net charge of 9 e. We analyzed in detail how the shell thickness and the radial and angular distribution of the shell charges influenced the effective interaction between the shells. We found a sequence of the potential of the mean force similar to the like-charged filled spheres, ranging from long-range purely repulsive to short-range purely attractive as the electrostatic coupling increased. Both types of potentials were attenuated and an attractive-to-repulsive transition occurred in the presence of trivalent counterions as a result of (i) thinning the shell or (ii) shifting the shell charge from the outer towards the inner surface. The potential of the mean force became more attractive with the icosahedrally symmetric charge model, and additionally, at least one shell tended to line up with 5-fold symmetry axis along the longest axis of the simulation box at the maximum attraction. The results provided a basic framework of understanding the non-specific electrostatic origin of the agglomeration and long-range assembly of the viral nanoparticles.
Ion collector design for an energy recovery test proposal with the negative ion source NIO1
Authors: Variale V. , Cavenago M. , Agostinetti P. , Sonato P. , Zanotto L.
Published: October 2015

Commercial viability of thermonuclear fusion power plants depends also on minimizing the recirculation power used to operate the reactor. The neutral beam injector (NBI) remains one of the most important method for plasma heating and control. For the future fusion power plant project DEMO, a NBI wall plug efficiency at least of 0.45 is required, while efficiency of present NBI project is about 0.25. The D− beam from a negative ion source is partially neutralized by a gas cell, which leaves more than 40% of energy in residual beams (D− and D+), so that an ion beam energy recovery system can significantly contribute to optimize efficiency. Recently, the test negative ion source NIO1 (60 keV, 9 beamlets with 15 mA H− each) has been designed and built at RFX (Padua) for negative ion production efficiency and the beam quality optimization. In this paper, a study proposal to use the NIO1 source also for a beam energy recovery test experiment is presented and a preliminary design of a negative ion beam collector with simulations of beam energy recovery is discussed.
Temporal coupled-mode theory model for resonant near-field thermophotovoltaics
Authors: Karalis Aristeidis , Joannopoulos J. D.
Published: October 2015

A temporal Coupled-Mode Theory model is developed to predict performance of resonant near-field ThermoPhotoVoltaic systems, which typically requires numerically intensive calculations. It is formulated for both orthogonal and non-orthogonal (coupled) modes and includes load-voltage dependencies and non-idealities, such as background absorption and radiation losses. Its good accuracy is confirmed by comparing with exact transfer-matrix calculations for two simple planar systems: a plasmonic emitter across a bulk semiconductor absorber and a metal-backed thin-film semiconductor emitter across an identical absorber.