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All-optical logic devices based on black arsenic-phosphorus with strong nonlinear optical response and high stability

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Opto-Electronic Advances 2022年第1期5卷 13-23页

作者： Leiming Wu Taojian Fan songrui wei Yijun Xu Ye Zhang Dingtao Ma Yiqing Shu Yuanjiang Xiang Jun Liu Jianqing Li Krassimir Panajotov Yuwen Qin Han Zhang Institute of Microscale Optoelectronics Collaborative Innovation Centre for Optoelectronic Science&TechnologyKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceShenzhen Key Laboratory of Micro-Nano Photonic Information TechnologyGuangdong Laboratory of Artificial Intelligence and Digital Economy(SZ)Shenzhen UniversityShenzhen 518060China Faculty of Information Technology Macao University of Science and TechnologyMacao 519020China Department of Applied Physics and Photonics(IR-TONA) Vrije Universiteit BrusselsPleinlaan 2B-1050 BrusselsBelgium Institute of Advanced Photonics Technology School of Information EngineeringGuangdong University of TechnologyGuangzhou 510006China

The Kerr nonlinearity in two-dimensional(2D)nanomaterials is emerging as an appealing and intriguing research area due to their prominent light processing,modulation,and manipulation *** this contribution,2D black arsenic-phosphorus(B-AsP)nanosheets(NSs)were applied in nonlinear photonic devices based on spatial self-phase modula-tion(SSPM)*** applying the Kerr nonlinearity in 2D B-AsP,an all-optical phase-modulated system is proposed to realize the functions of“on”and“off”in all-optical *** using the same all-optical phase-modulated system,another optical logic gate is proposed,and the logical“or”function is obtained based on the 2D B-AsP NSs ***,by using the SSPM method,a 2D B-AsP/SnS_(2) hybrid structure is fabricated,and the result illustrates that the hybrid structure possesses the ability of the unidirectional nonlinear excitation,which helps in obtaining the function of spatial asymmetric light *** function is considered an important prerequisite for the realization of diode functionalization,which is believed to be a factor in important basis for the design of isolators as *** initial investig-ations indicate that 2D B-AsP is applicable for designing optical logical devices,which can be considered as an import-ant development in all-optical information processing.

关键词： B-AsP nanomaterial all-optical phase-modulated system spatial asymmetric light propagation

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Fully depleted vdW heterojunction based high performance photovoltaic photodetector

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Journal of Materiomics 2023年第6期9卷 1039-1047页

作者： Yonghong Zeng Fanxu Meng Sidi Fan Pengfei Wang Cuiyun Kou Mingyi Sun Haiguo Hu Rui Cao Swelm Wageh Omar A.Al-Hartomy Abul Kalam Bowen Du Wenchao Ding songrui wei Zhinan Guo Qiuliang Wang Han Zhang College of Physics and Optoelectronic Engineering Institute of Microscale OptoelectronicsInternational Collaborative Laboratory of 2D Materials for Optoelectronics Science and TechnologyInterdisciplinary Center of High Magnetic Field Physics of Shenzhen UniversityShenzhen UniversityShenzhen518060China Guangzhou Key Laboratory of Sensing Materials and Devices Center for Advanced Analytical ScienceSchool of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou510006China Department of Physics Faculty of ScienceKing Abdulaziz UniversityJeddah21589Saudi Arabia Research Center for Advanced Materials Science(RCAMS) Department of ChemistryCollege of ScienceKing Khalid UniversityP.O.Box 9004Abha61413Saudi Arabia Foshan Electrical and Lighting Co. LTD64 North Fenjiang RoadFoshanChina Institute of Electrical Engineering Chinese Academy of SciencesBeijing100190China Center of Characterization and Analysis Jilin Institute of Chemical TechnologyJilin132022China

Van der Waals(vdW)heterojunctions,with their unique electronic and optoelectronic properties,have become promising candidates for photodetector *** the contribution of the depletion region in vdW heterojunction,which would enhance both of the collection efficiency and speed of the photogenerated carriers,presents an effective strategy for achieving high performance vdW heterojunction ***,a fully depleted vdW heterojunction photodetector is built on two-dimensional(2D)semiconductor materials(GaTe and InSe)layered on a pattered bottom electrode in vertical structure,in which the generation and motion of carriers are exclusively achieved in the depletion *** to the intrinsic built-in electric field,the elimination of series resistance and the depletion region confinement of carriers,the as-fabricated photodetector exhibits prominent photovoltaic properties with a high open-circuit voltage of 0.465 V,as well as photoresponse characteristics with outstanding responsivity,detectivity and photoresponse speed of 63.7 A/W,3.88×10^(13)Jones,and 32.7 ms *** overall performance of this fully depleted GaTe/InSe vdW heterojunctions photodetectors are ranking high among the top level of 2D materials based *** indicates the device architecture can provide new opportunities for the fabrication of high-performance photodetectors.

关键词： Two-dimensional material van der waals heterojunction Fully depleted photodetector Photovoltaic

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Facile Semiconductor p-n Homojunction Nanowires with Strategic p-Type Doping Engineering Combined with Surface Reconstruction for Biosensing Applications

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Nano-Micro Letters 2024年第10期16卷 15-30页

作者： Liuan Li Shi Fang wei Chen Yueyue Li Mohammad Fazel Vafadar Danhao Wang Yang Kang Xin Liu Yuanmin Luo Kun Liang Yiping Dang Lei Zhao songrui Zhao Zongzhi Yin Haiding Sun iGaN Laboratory School of MicroelectronicsUniversity of Science and Technology of ChinaHefei 230026People's Republic of China Department of Obstetrics and Gynecology The First Affiliated Hospital of Anhui Medical UniversityNo 218 Jixi RoadHefei 230022People's Republic of China Department of Electrical and Computer Engineering McGill University3480 University StreetMontrealQC H3A 0E9Canada Union Hospital Tongji Medical CollegeHuazhong University of Science and TechnologyNo 1277 Jiefang Ave.Wuhan 430022People's Republic of China

Photosensors with versatile functionalities have emerged as a cornerstone for breakthroughs in the future optoelectronic systems across a wide range of *** particular,emerging photoelectrochemical(PEC)-type devices have recently attracted extensive interest in liquid-based biosensing applications due to their natural electrolyte-assisted operating ***,a PEC-type photosensor was carefully designed and constructed by employing gallium nitride(GaN)p-n homojunction semiconductor nanowires on silicon,with the p-GaN segment strategically doped and then decorated with cobalt-nickel oxide(CoNiO_(x)).Essentially,the p-n homojunction configuration with facile p-doping engineering improves carrier separation efficiency and facilitates carrier transfer to the nanowire surface,while CoNiO_(x)decoration further boosts PEC reaction activity and carrier dynamics at the nanowire/electrolyte ***,the constructed photosensor achieves a high responsivity of 247.8 mA W^(-1)while simultaneously exhibiting excellent operating ***,based on the remarkable stability and high responsivity of the device,a glucose sensing system was established with a demonstration of glucose level determination in real human *** work offers a feasible and universal approach in the pursuit of high-performance bio-related sensing applications via a rational design of PEC devices in the form of nanostructured architecture with strategic doping engineering.

关键词： p-n GaN nanowires Strategic p-doping Surface decoration Photoelectrochemical sensor Glucose sensing

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Structural plasticity-based hydrogel optical Willshaw model for one-shot on-the-fly edge learning

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InfoMat 2023年第4期5卷 48-59页

作者： Dingchen Wang Dingyao Liu Yinan Lin Anran Yuan Woyu Zhang Yaping Zhao Shaocong Wang Xi Chen Hegan Chen Yi Zhang Yang Jiang Shuhui Shi Kam Chi Loong Jia Chen songrui wei Qing Wang Hongyu Yu Renjing Xu Dashan Shang Han Zhang Shiming Zhang Zhongrui Wang Department of Electrical and Electronic Engineering The University of Hong KongHong Kongthe People's Republic of China ACCESS-AI Chip Center for Emerging Smart Systems InnoHK CentersHong Kong Science ParkHong Kongthe People's Republic of China School of Computer Science and Engineering Faculty of Innovation EngineeringMacao University of Science and TechnologyMacaothe People's Republic of China Key Laboratory of Microelectronics Devices and Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijingthe People's Republic of China Collaborative Innovation Center for Optoelectronic Science Technology International Collaborative Laboratory of 2D Materials for OptoelectronicsScience and Technology of Ministry of EducationInstitute of Microscale OptoelectronicsShenzhen UniversityShenzhenthe People's Republic of China School of Microelectronics Southern University of Science and TechnologyShenzhenthe People's Republic of China Microelectronics Thrust Function Hub of the Hong Kong University of Science and Technology(Guangzhou)Guagndongthe People's Republic of China

Autonomous one-shot on-the-fly learning copes with the high privacy,small dataset,and in-stream data at the *** such learning on digital hardware suffers from the well-known von-Neumann and scaling *** optical neural networks featuring large parallelism,low latency,and high efficiency offer a promising ***,ex-situ training of conventional optical networks,where optical path configuration and deep learning model optimization are separated,incurs hardware,energy and time overheads,and defeats the advantages in edge ***,we introduced a bio-inspired material-algorithm co-design to construct a hydrogel-based optical Willshaw model(HOWM),manifesting Hebbian-rule-based structural plasticity for simultaneous optical path configuration and deep learning model optimization thanks to the underlying opto-chemical *** first employed the HOWM as an all optical in-sensor AI processor for one-shot pattern classification,association and *** then leveraged HOWM to function as a ternary content addressable memory(TCAM)of an optical memory augmented neural network(MANN)for one-shot learning the Omniglot *** HOWM empowered one-shot on-the-fly edge learning leads to 1000boost of energy efficiency and 10boost of speed,which paves the way for the next-generation autonomous,efficient,and affordable smart edge systems.

关键词： associative memory hydrogel one-shot learning optical neural network structural plasticity Willshaw model

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Hierarchical NiMoP_(2)-Ni_(2)P with amorphous interface as superior bifunctional electrocatalysts for overall water splitting

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Journal of Materials Science & Technology 2021年第18期77卷 108-116页

作者： Gaoqi Tian songrui wei Zhangtao Guo Shiwei Wu Zhongli Chen Fuming Xu Yang Cao Zheng Liu Jieqiong Wang Lei Ding Jinchun Tu Hao Zeng State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science and EngineeringHainan UniversityHaikou 570228China College of Physics and Optoelectronic Engineering.Shenzhen University Shenzhen 518080China Qiongtai Normal University Haikou 571127China Department of Physics SUNY-BuffaloBuffaloNY14260USA

Producing highly efficient bifunctional catalyst for the generation of hydrogen and oxygen through overall water splitting is an emerging direction in ***,a dandelion-like hierarchical NiMoP_(2)-Ni_(2)P(nanowire/nanoparticle)heterostructure was synthesized for efficient electrochemical water *** NiMoP_(2)-Ni_(2)P heterostructures grown on carbon cloth as a freestanding integrated electrode exhibited excellent oxygen evolution reaction(OER)activity and hydrogen evolution reaction(HER)activities with low overpotentials(258 mV and 53 mV to reach 10 mA cm~(-2)for the OER and HER,respectively),and small Tafel slope(45 mV dec^(-1)and 58 mV dec^(-1)for the OER and HER,respectively).Moreover,the NiMoP_(2)-Ni_(2)P heterostructure can act as both anode and cathode catalysts for overall water splitting with low overall potential of 1.48 V at 10 mA cm~(-2).Density functional theory(DFT)combined with structural probes suggests that the amorphous heterogeneous interfaces play an essential role in enhanced catalytic performance.

关键词： Bimetallic phosphide Amorphous interface Adsorption energy Hydrogen evolution reaction Oxygen evolution reaction Water splitting

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A new LFSR based high-frequency test method for RSFQ circuit

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Superconductivity 2022年第2期2卷 23-27页

作者： Liyun Chen songrui Li Liliang Ying Minghui Niu Huanli Liu Hui Zhang Xue Zhang Xiaoping Gao Jie Ren wei Peng Zhen Wang State Key Laboratory of Functional Material for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China CAS Center for Excellence in Superconducting Electronics(CENSE) Shanghai 200050China University of Chinese Academy of Sciences Beijing 100049China

Rapid single flux quantum(RSFQ)circuits have the advantages of high speed and low power *** typical frequency of the RSFQ circuits is tens of ***,it is necessary to reliably test the highfrequency performance of RSFQ circuits simply and *** paper proposes a new on-chip highfrequency testing method,which uses pseudo-random sequences generated by linear feedback shift register(LFSR)as the test vectors,and the output shift registers(SRs)to store the last piece of high-frequency testing result and read out it at *** the traditional high-frequency demonstration method of using the Input/Output SRs,our testing system can automatically generate a large number of test vectors to test the circuit at high frequency at low cost,making the whole high-frequency demonstration more reliable and *** the other hand,this method is also a feasible and straightforward on-chip high-frequency test method for various RSFQ *** work verified the proposed method,and the highest test frequency can reach 54 GHz while the circuit shows good operating margins.

关键词： LFSR SFQ High-frequency testing On-chip testing system

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从“主动负债”到“被动负债”:中央监管转变下的隐性债务扩张变化

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经济学（季刊） 2023年第6期23卷 2136-2155页

作者：聂卓刘松瑞玄威对外经济贸易大学国际经济贸易学院中国人民大学应用经济学院美国南加利福尼亚大学经济学系

中国地方债扩张受地方政府激励推动,而地方政府激励的作用方向受中央监管导向的塑造。本文发现,2015年前后中央监管导向趋严,地方隐性债务的扩张模式由“主动负债”转向“被动负债”。“主动负债”模式主要由地方政府激励驱动,以基础设... 详细信息

中国地方债扩张受地方政府激励推动,而地方政府激励的作用方向受中央监管导向的塑造。本文发现,2015年前后中央监管导向趋严,地方隐性债务的扩张模式由“主动负债”转向“被动负债”。“主动负债”模式主要由地方政府激励驱动,以基础设施建设为主要用途。“被动负债”模式主要由地方政府偿债压力驱动,以借新还旧为主要用途。对隐性债务风险的分析表明,这一转变遇制了债务存量的扩张,但是债务利息成本与偿债可持续性仍然具有一定风险。

关键词：地方政府隐性债务中央监管导向地方政府激励

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地方财政压力与融资平台举债——基于“营改增”全面推广的研究

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经济科学 2023年第1期 100-117页

作者：聂卓席天扬刘松瑞玄威对外经济贸易大学国际经济贸易学院北京大学中国经济研究中心(2008年更名为国家发展研究院) 北京大学国家发展研究院

本文从财政分权和财政压力的两个角度研究地方融资平台债务的形成机制以及扩张路径,通过分析地方财政收入的结构变化揭示了2016年“营改增”全面推广对于地方财政压力的影响。基于2009—2018年间地级市“城投债”数据的回归分析表明,财... 详细信息

本文从财政分权和财政压力的两个角度研究地方融资平台债务的形成机制以及扩张路径,通过分析地方财政收入的结构变化揭示了2016年“营改增”全面推广对于地方财政压力的影响。基于2009—2018年间地级市“城投债”数据的回归分析表明,财政压力与近年来融资平台大规模举债之间存在正相关性。造成这种相关性的原因可能在于,财政支持力度的减弱促使融资平台通过债务发行“借新还旧”和补充流动资金,而非用于新增基建投资。上述效应在地方主政官员晋升激励较强以及地方隐性金融分权较弱的情形下更为重要。

关键词：财政分权财政压力城投债融资平台金融分权

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航站楼离港资源配置优化方法研究综述

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科学技术与工程 2023年第5期23卷 1812-1822页

作者：刘继新杨宋瑞雪江灏王志伟南京航空航天大学民航学院南京211106 国家空管飞行流量管理技术重点实验室南京211106

随着民航运输业的高速发展,资源负荷过载导致的航站楼拥堵问题愈发严重,不合理的资源分配策略会对整个民航系统的经济、安全、服务等方面都造成较为严重的负面影响,因此,准确及时地对关键资源进行配置优化成为近年来民航交通运输领域的... 详细信息

随着民航运输业的高速发展,资源负荷过载导致的航站楼拥堵问题愈发严重,不合理的资源分配策略会对整个民航系统的经济、安全、服务等方面都造成较为严重的负面影响,因此,准确及时地对关键资源进行配置优化成为近年来民航交通运输领域的研究热点。首先,介绍了基于资源调度与协同决策的航站楼优化概念的研究现状;其次,分别针对值机、安检、登机口3个主要服务资源总结了目前国内外常用的配置优化策略,分别为:基于静态配置模型和动态配置模型的值机资源配置方法,考虑旅客移动特点和手续办理流程的安检优化方法,基于数学规划方法(多目标优化模型与图论-网络流模型)和计算机仿真技术的登机口分配方法;最后,提出了航站楼服务资源配置优化问题的未来研究方向。

关键词：机场规划与评估航站楼资源配置协同决策优化模型航站楼离港流程

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单层分散型Pt/Ni双金属催化剂的制备及其C=C和C=O催化加氢性能

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催化学报 2006年第4期27卷 301-303页

作者：王松蕊林伟朱月香谢有畅陈经广北京大学化学与分子工程学院分子动态与稳态国家重点实验室北京100871 特拉华大学化学工程系催化科学与技术中心

利用金属置换反应制备了表面单层分散型Pt/Ni双金属催化剂,并测定了该催化剂对环己烯、苯乙烯、丙酮和丁醛气相加氢反应的催化性能.结果发现,这种催化剂具有比传统浸渍法制备的相同Pt含量的Pt/Ni和Pt/Al2O3催化剂更高的催化活性.

关键词：铂镍单层分散双金属催化剂加氢反应置换反应

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