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IEEE Electron Device Letters 2020年第7期41卷 1052-1055页

作者： Jin Wang Hui Guo Cheng-Zhang Zhu Qing Cai Guo-Feng Yang Jun-Jun Xue Dun-Jun Chen Yi Tong Bin Liu Hai Lu Rong Zhang You-Dou Zheng Key Laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and Engineering Nanjing University Nanjing China School of the Environment Nanjing University Nanjing China Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology School of Science Jiangnan University Wuxi China College of Electronic and Optical Engineering and College of Microelectronics Nanjing University of Posts and Telecommunications Nanjing China

We predict spontaneous polarization of ε-Ga 2 O 3 can achieve a high density of 1014 cm -2 two-dimensional electron gas (2DEG) at the interface of ε-Ga 2 O 3 and m-AlN (m-GaN) without doping. Based on the accurately calculated bandgap alignment of ε-Ga 2 O 3 , AlN and GaN, we find that the critical thickness of the ε-Ga2O3 to form a mobile 2DEG at the interface on m-AlN and m-GaN substrates is around 1.8 nm, which is much thinner than AlGaN due to its large potential shift. The depletion mode high-electron-mobility transistors (HEMTs) based on ε-Ga 2 O 3 are also investigated. The results show that the saturation currents of ε-Ga 2 O 3 HEMTs devices are much larger than that of typical AlGaN HEMTs. For the emerging problem of large leakage current from ε-Ga 2 O 3 HEMTs device, we present a novel method that can significantly suppress the off-state leakage current of the device by growing an ultrathin AlGaN layer on the top surface of ε-Ga 2 O 3 . Therefore, our results can provide a theoretical basis for the potential applications of ε-Ga 2 O 3 in fabricating HEMTs for high-power and high-frequency applications.

关键词： HEMTs MODFETs Gallium nitride Aluminum gallium nitride Wide band gap semiconductors Aluminum nitride III-V semiconductor materials

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Who can benefit more from its twelve-week treatment:A prospective cohort study of blonanserin for patients with schizophrenia

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World Journal of Psychiatry 2024年第11期14卷 1735-1745页

作者： Bao-Yan Xu Kun Jin Hai-Shan Wu Xue-Jun Liu Xi-Jin Wang Hong Sang Ke-Qing Li Mei-Juan Sun Hua-Qing Meng Huai-Li Deng Zhi-Yuan Xun Xiao-Dong Yang Lin Zhang Guan-Jun Li Rui-Ling Zhang Duan-Fang Cai Jia-Hong Liu Gui-Jun Zhao Long-Fa Liu Gang Wang Chang-Lie Zhao Bin Guo Sheng-Chun Jin Ling-Yun Huang Fu-De Yang Jian-Min Zheng Gui-Lai Zhan Mao-Sheng Fang Xiang-Jun Meng Guang-Ya Zhang Hai-Min Li Xiang-Lai Liu Ju-Hong Li Bin Wu Hai-Yun Li Jin-Dong Chen Department of Psychiatry National Clinical Research Center for Mental DisordersNational Center for Mental DisordersThe Second Xiangya Hospital of Central South UniversityChangsha 410011Hunan ProvinceChina Department of Psychiatry Hebei Provincial Mental Health CenterHebei Key Laboratory of Major Mental and Behavioral DisordersThe Sixth Clinical Medical College of Hebei UniversityBaoding 071000Hebei ProvinceChina Department of Psychiatry Brain Hospital of Hunan ProvinceChangsha 410000Hunan ProvinceChina Department of Psychiatry The First Psychiatric Hospital of HarbinHarbin 150000Heilongjiang ProvinceChina Mental Health Center Changchun Sixth HospitalChangchun 130000Jilin ProvinceChina Department of Pharmacy Daqing Third HospitalDaqing 163000Heilongjiang ProvinceChina Department of Physical and Psychological Rehabilitation Guangda Rehabilitation HospitalChongqing 400000China Department of Psychology Shanxi Provincial Mental Health CenterTaiyuan 030000Shanxi ProvinceChina Department of Psychiatry Tianjin Anding HospitalTianjin 300000China Department of Psychiatry Shandong Mental Health CenterJinan 250000Shandong ProvinceChina Department of Psychiatry Fuzhou Shenkang HospitalFuzhou 350000Fujian ProvinceChina Department of Psychiatry Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghai 200000China Department of Psychiatry The Second Affiliated Hospital of Xinxiang Medical UniversityXinxiang 453000Henan ProvinceChina Department of Psychiatry The Fifth People’s Hospital of ZigongZigong 643000Sichuan ProvinceChina Department of Psychiatry The Affiliated Kangning Hospital of Wenzhou Medical UniversityWenzhou 325000Zhejiang ProvinceChina Department of Psychiatry Guangyuan Mental Health CenterGuangyuan 628000Sichuan ProvinceChina Department of Psychiatry Jilin Sixth People’s HospitalJilin 132000Jilin ProvinceChina The National Clinical Research Center for Mental Disorders&Beijing Key Laboratory of Mental Disorders Beijing Anding Hospital

BACKGROUND Blonanserin(BNS)is a well-tolerated and effective drug for treating *** To investigate which types of patients would obtain the most benefit from BNS *** A total of 3306 participants were evaluated in a 12-week,prospective,multicenter,open-label post-marketing surveillance study of *** psychiatric rating scale(BPRS)scores were calculated to evaluate the effectiveness of BNS,and its safety was assessed with the incidence of adverse drug *** regression was used to screen the influencing factors for the reduction of BPRS total score,and logistic regression was used to identify patients with a better response to *** The baseline BPRS total score(48.8±15.03)decreased to 27.7±10.08 at 12 weeks(P<0.001).Extrapyramidal symptoms(14.6%)were found to be the most frequent adverse drug *** acute phase,baseline BPRS total score,current episode duration,number of previous episodes,dose of concomitant antipsychotics,and number of types of sedative-hypnotic agents were found to be independent factors affecting the reduction of BPRS total score after treatment ***,patients in the acute phase with baseline BPRS total score≥45,current episode duration<3 months,and≤3 previous episodes derived greater benefit from 12-week treatment with *** Patients in the acute phase with more severe symptoms,shorter current episode duration,fewer previous episodes,and a lower psychotropic drug load derived the greatest benefit from treatment with BNS.

关键词： Schizophrenia Blonanserin Effectiveness Psychosocial functioning Prospective cohort study

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Magnetic-field-induced nontrivial electronic state in the Kondo-lattice semimetal CeSb

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Physical Review B 2020年第9期101卷 094424-094424页

作者： Y. Fang F. Tang Y. R. Ruan J. M. Zhang H. Zhang H. Gu W. Y. Zhao Z. D. Han W. Tian B. Qian X. F. Jiang X. M. Zhang X. Ke Jiangsu Laboratory of Advanced Functional Materials Department of Physics Changshu Institute of Technology Changshu 215500 China Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials College of Physics and Energy Fujian Normal University Fuzhou 350117 China Department of Physics and Astronomy Michigan State University East Lansing Michigan 48824 USA ISEM Innovation Campus University of Wollongong Wollongong New South Wales 2500 Australia Neutron Scattering Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA School of Materials Science and Engineering Hebei University of Technology Tianjin 300130 China

Synergic effect of electronic correlation and spin-orbit coupling is an emerging topic in topological materials. Central to this rapidly developing area are the prototypes of strongly correlated heavy-fermion systems. Recently, some Ce-based compounds are proposed to host intriguing topological nature, among which the electronic properties of CeSb are still under debate. In this paper, we report a comprehensive study combining magnetic and electronic transport measurements, and electronic band-structure calculations of this compound to identify its topological nature. Quantum oscillations are clearly observed in both magnetization and magnetoresistance at high fields, from which one pocket with a nontrivial Berry phase is recognized. Angular-dependent magnetoresistance shows that this pocket is elongated in nature and corresponds to the electron pocket as observed in LaBi. Nontrivial electronic structure of CeSb is further confirmed by first-principle calculations, which arises from spin splitting in the fully polarized ferromagnetic state. These features indicate that magnetic field can induce nontrivial topological electronic states in this prototypical Kondo semimetal.

关键词： Electronic structure Magnetism Semimetals Kondo lattice model

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Large field-of-view super-resolution image obtained by manipulating submerged microsphere

Large field-of-view super-resolution image obtained by manip...

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International Conference on Mechanical, Electric and Industrial Engineering, MEIE 2018

作者： Gao, Shilin Meng, Kai Yang, Zhan Liu, Huicong Chen, Tao Sun, Lining Jiangsu Provincial Key Laboratory of Advanced Robotics Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou215123 China

Images with super-resolution can be obtained by dielectric microspheres with appropriate refractive index. However, in practical applications, the microsphere must be moved to the desired position and can scan the large specific area. Here we present a simple method of positioning a microsphere by using a four-dimensional precision translation stage. The simulations have been performed to confirm that 16 μm φ barium titanate glass (BTG) microsphere submerged in alcohol can obtain high quality images and the influence of the probe and the flowing liquid on imaging can be ignored. Therefore, by driving the translation stage, the submerged microsphere can scan the sample surface along the X and Y axis at the speed of 10 μm/s and the large field-of-view image can be achieved by stitching the pictures of different positions. This work has provided a new technique in super-resolution imaging and can be widely applied in field of scientific research. © Published under licence by IOP Publishing Ltd.

关键词： Microspheres

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Non-contact optical super-resolution imaging study based on height-variable microsphere

Non-contact optical super-resolution imaging study based on ...

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International Conference on Mechanical, Electric and Industrial Engineering, MEIE 2018

作者： Meng, Kai Gao, Shilin Yang, Zhan Liu, Huicong Chen, Tao Sun, Lining Jiangsu Provincial Key Laboratory of Advanced Robotics Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou215123 China

Super-resolution images can be achieved by coupling the microscale dielectric microsphere with white-light optical microscopy. This paper presented a method for adjusting the distance between microsphere and sample to study the imaging ability of the microsphere. By this method, the nanofeatures on the Blu-ray disc surface could be observed. The super-resolution images when microspheres at different heights were compared to analyse the changing trend of imaging ability with distance. The optical simulation results illustrated that super-resolution imaging ability was related to the position of the photonic nanojet. As the photonic nanojet was inside the sample, the super-resolution image could be achieved even if the microspheres didn't touch the sample. This work has great significance for manipulating microsphere to non-contact image. © Published under licence by IOP Publishing Ltd.

关键词： Microspheres

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Giant topological hall effect in van der waals heterostructures of CrTe2/Bi2Te3

arXiv

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arXiv 2021年

作者： Zhang, Xiaoqian Ambhire, Siddhesh C. Lu, Qiangsheng Niu, Wei Cook, Jacob Jiang, Jidong Samuel Hong, Deshun Alahmed, Laith He, Liang Zhang, Rong Xu, Yongbing Zhang, Steven S.-L. Li, Peng Bian, Guang Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and Engineering Nanjing University Nanjing210093 China Department of Physics and Astronomy University of Missouri ColumbiaMO65211 United States %Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Guangdong Shenzhen518055 China Department of Physics Case Western Reserve University ClevelandOH44106 United States New Energy Technology Engineering Laboratory of Jiangsu Provence & School of Science Nanjing University of Posts and Telecommunications Nanjing210023 China Materials Science Division Argonne National Laboratory LemontIL60439 United States Department of Electrical and Computer Engineering Auburn University AuburnAL36849 United States for spintronics and nano engineering Department of Electronic Engineering The University of York YO10 3DD United Kingdom

Discoveries of interfacial topological Hall effect (THE) provide an ideal platform for exploring physics arising from the interplay between topology and magnetism. The interfacial topological Hall effect is closely related to the Dzyaloshinskii-Moriya interaction (DMI) at interface and topological spin textures. However, it is difficult to achieve a sizable THE in heterostructures due to the stringent constraints on the constituents of THE heterostructures such as strong spin-orbit coupling (SOC). Here we report the observation of a giant THE signal of 1.39 ·cm in the van der Waals heterostructures of CrTe2/Bi2Te3 fabricated by molecular beam epitaxy, a prototype of two-dimensional (2D) ferromagnet (FM)/topological insulator (TI). This large magnitude of THE is attributed to an optimized combination of 2D ferromagnetism in CrTe2, strong SOC in Bi2Te3, and an atomically sharp interface. Our work reveals CrTe2/Bi2Te3 as a convenient platform for achieving large interfacial THE in hybrid systems, which could be utilized to develop quantum science and high-density information storage. © 2021, CC BY-NC-SA.

关键词： Ferromagnetism

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A New OEW Microfluidic Device based on p-n Junction

A New OEW Microfluidic Device based on p-n Junction

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IEEE International Conference on robotics and Biomimetics

作者： Yaqing Li Haibo Huang Liguo Chen Su Yan Lining Sun School of Mechanical and Electric Engineering Jiangsu Provincial Key Laboratory of Advanced Robotics Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Su Zhou China

Compared with the electrowetting on dielectric (EWOD) microfluidic device, optoelectrowetting (OEW) microfluidic device does not need to control the on-off of single electrode, but only needs to change the lighting condition to control the droplet, simplifying the peripheral control device and improving the stability of the device. The contradiction between the operating voltage and the driving force exists in the existing OEW device. To solve this problem, this paper proposes an OEW device based on diode structure, which uses the photoelectric effect of the diode connected in the DC circuit to control the movement state of the droplet. In this paper, the feasibility of the OEW device with pn structure is theoretically analyzed. Compared with the previous OEW device, under the same applied voltage and the same illumination difference, the potential difference between the diodes in the new device will be significantly larger than the potential difference between the photoresistors, which will effectively improve the driving force of the DC drive.

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Uniform and reproducible plasmon-enhanced fluorescence substrate based on PMMA-coated, large-area Au@Ag nanorod arrays

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Nano Research 2018年第2期11卷 953-965页

作者： Jun Sun Ziyang Li Yinghui Sun Liubiao Zhong Jing Huang Junchang Zhang Zhiqiang Liang Jianmei Chen Lin Jiang Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Soochow University Suzhou China Soochow Institute for Energy and Materials InnovationS College of Physics Optoelectronics and Energy Institute of Chemical Power Sources & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou China Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies Soochow University Suzhou China

Here we describe a plasmon-enhanced fluorescence substrate based on poly（methyl methacrylate）（PMMA）-coated, large-area Au@Ag nanorod arrays. The use of a PMMA medium enables precise control of the competition between enhancing and quenching processes as a function of the distance between Au@Ag nanorods and dye molecules. At the optimal PMMA layer thickness of 56 nm （for which the distance between nanopartides and dye molecules is 16 nm）, a maximum enhancement of fluorescence of up to N 27 times is measured. The competition mechanism between enhancing and quenching processes depends on the thickness of the PMMA layer, which has been confirmed by consistent experimental and theoretical modeling results. Notab136 the micropatterned metal-enhanced fluorescence （MEF） substrate exhibits high uniformity and reproducibility. The simple spin-coating process described herein provides an attractive, scalable, and low-cost strategy to produce uniform and reproducible large-area MEF substrates that can potentially be used in many fields, such as biochips, diagnostics, and photonics.

关键词： Au@Ag nanorod arrays metal-enhancedfluorescence （MEF） poly（methyl methacrylate）（PMMA） layer micro patterning localized surface plasmonresonance （LSPR）

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Influence of Pressure Angle on Tooth Surface Contact Stress of the Asymmetric Gear with Double Pressure Angles Meshing Beyond the Pitch Point

Influence of Pressure Angle on Tooth Surface Contact Stress ...

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International Conference on Mechanical Design, ICMD 2017

作者： Li, Xiulian Yang, Jiangxin Xu, Xusong Liu, Wei Shi, Xiaofang He, Qing School of Mechanical Engineering Jiangsu University of Technology Changzhou213001 China Zhejiang Provincial Key Laboratory of Advanced Manufacturing Technology Hangzhou310027 China The State Key Laboratory of Mechanical Transmissions Chongqing University Chongqing400044 China

ISBN: (纸本)9789811065521

Advantages of asymmetric gear include larger load carrying capacity, smaller vibration and longer life. Vibration of the gear system due to the change of the direction of the friction force can be avoided when gears drive meshing beyond the pitch point. In this paper, the basic theory of the asymmetric gear with double pressure angles driving system meshing beyond the pitch point is developed. And the influence of gear pressures on the contact stress of driving gear of asymmetric increasing-speed spur gear drive system meshing in front of the pitch point is analyzed. Results show that the contact stress of asymmetric increasing-speed gear meshing in front of the pitch point can be effectively reduced by tuning the pressures on the driving side. © Springer Nature Singapore Pte Ltd. 2018.

关键词： Vibrations (mechanical)

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Stabilizing *CO2Intermediates at the Acidic Interface using Molecularly Dispersed Cobalt Phthalocyanine as Catalysts for CO2Reduction

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Angewandte Chemie 2024年第8期136卷

作者： Shijia Feng Xiaojun Wang Dongfang Cheng Yao Luo Mengxin Shen Jingyang Wang Wei Zhao Susu Fang Hongzhi Zheng Liyao Ji Xing Zhang Weigao Xu Yongye Liang Philippe Sautet Jia Zhu National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures College of Engineering and Applied Sciences Nanjing University Nanjing Jiangsu 210023 P. R. China School of Sustainable Energy and Resources Nanjing University Suzhou 215163 P. R. China Department of Chemical and Biomolecular Engineering University of California Los Angeles Los Angeles CA 90095 USA Key Laboratory of Mesoscopic Chemistry of Ministry of Education School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China Department of Materials Science and Engineering Guangdong Provincial Key Laboratory of Energy Materials for Electric Power Southern University of Science and Technology Shenzhen China Department of Chemistry and Biochemistry University of California Los Angeles Los Angeles CA 90095 USA

CO 2 electroreduction (CO 2 R) operating in acidic media circumvents the problems of carbonate formation and CO 2 crossover in neutral/alkaline electrolyzers. Alkali cations have been universally recognized as indispensable components for acidic CO 2 R, while they cause the inevitable issue of salt precipitation. It is therefore desirable to realize alkali-cation-free CO 2 R in pure acid. However, without alkali cations, stabilizing *CO 2 intermediates by catalyst itself at the acidic interface poses as a challenge. Herein, we first demonstrate that a carbon nanotube-supported molecularly dispersed cobalt phthalocyanine (CoPc@CNT) catalyst provides the Co single-atom active site with energetically localized d states to strengthen the adsorbate-surface interactions, which stabilizes *CO 2 intermediates at the acidic interface (pH=1). As a result, we realize CO 2 conversion to CO in pure acid with a faradaic efficiency of 60 % at pH=2 in flow cell. Furthermore, CO 2 is successfully converted in cation exchanged membrane-based electrode assembly with a faradaic efficiency of 73 %. For CoPc@CNT, acidic conditions also promote the intrinsic activity of CO 2 R compared to alkaline conditions, since the potential-limiting step, *CO 2 to *COOH, is pH-dependent. This work provides a new understanding for the stabilization of reaction intermediates and facilitates the designs of catalysts and devices for acidic CO 2 R.

关键词： Acidic Interface CO2 Adsorption, Stabilizing *CO2 Intermediates CO2 Reduction Molecularly Dispersed Catalyst

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