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Photovoltaic effects in reconfigurable heterostructured black phosphorus transistors

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Chinese Physics B 2018年第12期27卷 71-76页

作者： Siqi Hu Ruijuan Tian Xiaoguang Luo Rui Yin Yingchun Cheng Jianlin Zhao Xiaomu Wang Xuetao Gan MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions and Shaanxi Key Laboratory of Optical Information TechnologySchool of ScienceNorthwestern Polytechnical Univeristy Shannxi Institute of Flexible electronics Northwestern Polytechnical University school of Electronic Science and engineering Nanjing University

We demonstrate a reconfigurable black phosphorus electrical field transistor,which is van der Waals heterostructured with few-layer graphene and hexagonal boron nitride *** homojunctions could be realized by controlling both source–drain and top-gate *** the spatially resolved scanning photocurrent microscopy technique,photovoltaic photocurrents originated from the band-bending regions are observed,confirming nine different configurations for each set of fixed *** addition,as a phototransistor,high responsivity(～800 mA/W)and fast response speed(～230μs)are obtained from the *** reconfigurable van der Waals heterostructured transistors may offer a promising structure towards electrically tunable black phosphorus-based optoelectronic devices.

关键词： black phosphorus reconfigurable heterostructure photovoltaic effect photocurrent

Distributed robust power control in two-tier vehicle networks under uncertain channel environments

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Digital communications and Networks 2023年第3期9卷 734-742页

作者： Zhixin Liu Jiawei Su Yuan-ai Xie Yazhou Yuan Yi Yang Xinping Guan school of Electrical engineering Yanshan UniversityQinhuangdao066004China school of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai200240China

This paper proposes a novel optimization scheme to support stable and reliable vehicle-to-everything connections in two-tier networks,where the uplink channel of the cellular user is reused by underlay vehicle-to-vehicle ***,considering complex channel fading and high-speed vehicle movement,the cer-tainty assumption is impractical and fails to maintain power control strategy in reality in the traditional statical vehicular *** than the perfect channel state information assumption,the first-order Gauss-Markov process which is a probabilistic model affected by vehicle speed and fading is introduced to describe imperfect channel ***,interference management is a major challenge in reusing communications,especially in uncertain channel *** control is an effective way to realize interference management,and optimal power allocation can ensure that interference of the user meets the communication *** this study,the sum-rate-oriented power control scheme and minimum-rate-oriented power control scheme were implemented to manage interference and satisfy different design *** both of these schemes are non-convex and intractable,the Bernstein approximation and successive convex approximation methods were adopted to transform the original problems into convex ***,a novel distributed robust power control al-gorithm was developed to determine the optimal *** performance of the algorithm was evaluated through numerical simulations,and the results indicate that the proposed algorithm is effective in vehicular communication networks with uncertain channel environments.

关键词： Vehicle-to-Everything communications Vehicular two-tier networks Channel uncertainty Power control

Recent advances in lung-on-a-chip technology for modeling respiratory disease

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Bio-Design and Manufacturing 2023年第5期6卷 563-585页

作者： Jorge A.Tavares-Negrete Prativa Das Sahar Najafikhoshnoo Steven Zanganeh Rahim Esfandyarpour Department of Electrical engineering University of CaliforniaIrvineCA 92697USA Department of Biomedical engineering University of CaliforniaIrvineCA 92697USA Henry Samueli school of engineering University of CaliforniaIrvineCA 92697USA Laboratory for Integrated Nano Bio electronics Innovation Henry Samueli School of EngineeringUniversity of CaliforniaIrvineCA 92697USA Department of Mechanical and Aerospace engineering University of CaliforniaIrvineCA 92697USA Department of Bioengineering University of Massachusetts DartmouthDartmouthMAUSA

Tissue engineering approaches,including those to functional lung tissues,are finely honed by the inclusion of upgraded devices that mimic biophysical and biochemical features in *** culture is one of these essential biophysical characteristics enabled by the introduction of microfluidic devices in recent *** review links the importance of dynamic culture for in vitro maintenance of functional lung cells to the modeling of respiratory *** identify and discuss different parameters for fabricating the requisite microfluidic models for lung cells,as well as their application in modeling lung diseases caused by external factors such as smoking and *** possibility of creating a multi-organ-on-a-chip to establish a more physiologically relevant model is ***,the focus is on different prospects for the in vitro modeling approach and for lungs-on-a-chip for developing advanced,reliable technology to analyze the pathophysiology of respiratory diseases and screen potential treatments.

关键词： Lung-on-a-chip In vitromodeling Lung pathophysiology Respiratory diseases 3D culturemodel

Permutation polynomials x~(2k+1+3)+ax2k+2+bx over F_(22k) and their differential uniformity

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Science China(Information Sciences) 2020年第10期63卷 255-257页

作者： Jie PENG Lijing ZHENG Chunsheng WU Haibin KAN Mathematics and Science College Shanghai Normal University school of Mathematics and Physics University of South China Department of Mathematics Lianyungang Normal University Shanghai Key Laboratory of Intelligent Information Processing School of Computer ScienceFudan University Fudan-Zhongan Joint Laboratory of Blockchain and Information Security Shanghai Blockchain Engineering Research Center Shanghai Institute for Advanced communication and Data Science Shanghai Institute of Intelligent electronics & Systems

Dear editor,A polynomial f（x）∈Fq[x] is called a permutation polynomial （PP） over the finite field Fq if the associated mapping f:c （?） f（c） from Fq to itself is bijective.A PP f is called a complete permutation polynomial if f（x）+x is a *** over finite fields of even characteristic have wide applications,including cryptography,coding theory,and communication *** many block ciphers with substitution-permutation network structure,the substitution box is usually a PP over F_(22k)for some positive integer *** resist the differential attacks,the differential uniformity of this

关键词： Finite fields Permutation polynomial Binomial Trinomial Differential uniformity

Dielectric Patch Resonator and Antenna

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China communications 2023年第8期20卷 209-219页

作者： Jianxin Chen Xueying Wang Shichang Tang Yongle Wu school of Information Science and Technology and Research Center for Intelligent Information TechnologyNantong UniversityNantong 226019China Nantong Research Institute for Advanced communication Technologies Chongchuan DistrictNantong 226019China school of Electronic engineering Beijing University of Posts and TelecommunicationsBeijing 100876China

This paper presents an overview of dielectric patch(DP)antennas developed in recent *** employed DP resonator composed of a DP and a bottom substrate is analyzed comprehensively here,enabling the easy realization of a quasi-planar DP *** combines the dual advantages of the conventional microstrip patch(MP)antenna and dielectric resonator(DR)antenna in terms of profile,gain,bandwidth,radiation efficiency,and design ***,the DP antenna inherits the multi-mode characteristic of the DR antenna,thus it has a large number of high-order modes,including TMmn mode and TEmn *** high-order modes are widely applied,for example,by combining with the dominant TM10 mode to expand the bandwidth,or selecting multiple higher-order modes to implement a high-gain ***,the non-radiation high-order modes are also utilized to produce natural radiation null in filtering antenna *** this paper,the design theories and techniques of DP antenna are introduced and investigated,including calculation and control methods of the resonant mode frequencies,analysis of the radiation mechanism,and applications of the multi-mode *** overview could provide guidance for the subsequent antenna design,thus effectively avoid time-consuming optimization.

关键词： dielectric patch(DP)resonator DP antenna radiation mechanism multi-mode characteristic

Hermite Non-Uniformly Correlated Array Beams and Its Propagation Properties

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Chinese Physics Letters 2020年第12期37卷 41-47页

作者： Xue-Chun Zhao Lei Zhang Rong Lin Shu-Qin Lin Xin-Lei Zhu Yang-Jian Cai Jia-Yi Yu Shandong Provincial engineering and Technical Center of Light Manipulations&Shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and ElectronicsShandong Normal UniversityJinan 250014China College of Physics and Electronic engineering Heze UniversityHeze 274015China school of Physical Science and Technology Soochow UniversitySuzhou 215006China

We study the evolution of spectral intensity and degree of coherence of a new class of partially coherent beams,Hermite non-uniformly correlated array beams,in free space and in turbulence,based on the extended Huygens–Fresnel *** beams possess controllable rectangular grid distributions due to multi-self-focusing propagation ***,it is demonstrated that adjusting the initial beam parameters,mode order,shift parameters,array parameters and correlation width plays a role in resisting intensity and degree of coherence degradation effects of the turbulence.

关键词： property. uniformly turbulence

CM-Biquad Filter Using Single DO-VDBA

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Circuits and Systems 2018年第9期9卷 133-139页

作者： Chandra Ketu Yadav Dinesh Prasad Zainab Haseeb Laxya Mayank Kumar Department of electronics and communication engineering Faculty of Engineering and Technology Jamia Millia Islamia New Delhi India

In this manuscript we present a current mode biquad using one dual output-voltage differencing buffered amplifier (DO-VDBA) and four passive components (2 grounded capacitors and 2 resistors). The proposed circuit offers very low active and passive sensitivity. The filter presented here is electronically tunable, frequency of oscillation (FO) can be tuned by controlling transconductance (gm) by varying the bias current (IB) of the circuit. The workability of proposed circuit is tested using PSPICE with 180 nm TSMC CMOS process parameters.

关键词： Current Mode Biquad Filter Dual Output-Voltage Differencing Buffered Amplifier

Improved Efficiency and Stability of Organic Solar Cells by Interface Modification Using Atomic Layer Deposition of Ultrathin Aluminum Oxide

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Energy & Environmental Materials 2024年第3期7卷 282-290页

作者： Ai Lan Yiqun Li Huiwen Zhu Jintao Zhu Hong Lu Hainam Do Yifan Lv Yonghua Chen Zhikuan Chen Fei Chen Wei Huang school of Flexible electronics(Future Technologies)and Key Laboratory of Flexible electronics(KLOFE)and Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech UniversityNanjing 210009China Department of Chemical and Environmental engineering University of Nottingham Ningbo ChinaNingbo 315000China Key Laboratory of Flexible electronics of Zhejiang Province Ningbo Institute of Northwestern Polytechnical UniversityNingbo 315103China Frontiers Science Center for Flexible electronics Xi'an Institute of Flexible Electronics(IFE)and Xi'an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi'an 710072China

The interfacial contacts between the electron transporting layers(ETLs)and the photoactive layers are crucial to device performance and stability for OSCs with inverted ***,atomic layer deposition(ALD)fabricated ultrathin Al_(2)O_(3)layers are applied to modify the ETLs/active blends(PM6:BTP-BO-4F)interfaces of OSCs,thus improving device *** ALD-Al_(2)O_(3)thin layers on ZnO significantly improved its surface morphology,which led to the decreased work function of ZnO and reduced recombination losses in *** simultaneous increase in open-circuit voltage(V_(OC)),short-circuit current density(J_(SC))and fill factor(FF)were achieved for the OSCs incorporated with ALD-Al_(2)O_(3)interlayers of a certain thickness,which produced a maximum PCE of 16.61%.Moreover,the ALD-Al_(2)O_(3)interlayers had significantly enhanced device stability by suppressing degradation of the photoactive layers induced by the photocatalytic activity of ZnO and passivating surface defects of ZnO that may play the role of active sites for the adsorption of oxygen and moisture.

关键词： atomic layer deposition interface modification organic solar cells stability

Primitive functional groups directed distinct photocatalytic performance of imine-linked donor-acceptor covalent organic frameworks

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Nano Research 2024年第6期17卷 4994-5001页

作者： Xitong Ren Jiajie Sun Yusen Li Feng Bai Key Laboratory for Special Functional Materials of Ministry of Education National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting TechnologySchool of Materials Science and Engineeringand Collaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004China school of Physics and electronics Henan UniversityKaifeng 475004China

The combination of donor-acceptor(D-A)structures presents a viable strategy for fabricating covalent organic frameworks(COFs)with exceptional photocatalytic ***,the selection of functional groups on donor or acceptor building blocks and their effect on the macroscopic properties of COFs are *** this study,we tactfully synthesized a pair of Py-DBT-COFs from the same pyrene(Py)donor and 4,7-diphenylbenzo[c][1,2,5]thiadiazole(DBT)acceptor cores with distinct primitive functional *** primitive functional groups of building units determine the photocatalytic properties of corresponding ***,Py-C-DBT-COF synthesized from Py-4CHO and DBT-2NH_(2)showcases a splendid H_(2)evolution rate as high as 21,377.7μmol/(g·h)(with 5 wt.%Pt)originating from better charge transfer capacity,which is significantly superior to that of Py-N-DBT-COF constructed from Py-4NH_(2)and *** distinct photocatalytic performances of the two COFs are demonstrated to originate from the different charge separation and transfer *** work supplies a new avenue for optimizing the photocatalytic performance of D-A COFs from the perspective of primitive functional group selections.

关键词： covalent organic frameworks functional group donor-acceptor photocatalysis