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Biochemical sensing in graphene-enhanced microfiber resonators with individual molecule sensitivity and selectivity

Light(science & Applications) 2019年第1期8卷 173-182页

作者： Zhongxu Cao Baicheng Yao Chenye Qin Run yang Yanhong Guo Yufeng Zhang Yu Wu lei Bi Yuanfu Chen Zhenda Xie Gangding Peng Shu-Wei Huang Chee Wei Wong Yunjiang {2. Key Laboratory of Optical Fiber Sensing and Communications(Education Ministry of china) University of Electronic Science and Technology of ChinaChengdu 611731China State Key Lab of electronic Thin Film and Integrated Devices University of Electronic Science and Technology of ChinaChengdu 611731China National Laboratory of Solid State Microstructures and School of electronic science and {2. Nanjing UniversityNanjing 210093China School of Electrical engineering and Telecommunications University of New South WalesSydneyNSW 2052Australia department of Electrical Computerand Energy EngineeringUniversity of Colorado BoulderBoulderCO 80309USA Fang Lu Mesoscopic Optics and Quantum electronics Laboratory University of CaliforniaLos AngelesCA 90095USA Ubiquitous Sensing Center Zhejiang LaboratoryHangzhou 310000China

Photonic sensors that are able to detect and track biochemical molecules offer powerful tools for information acquisition in applications ranging from environmental analysis to medical *** ultimate aim of biochemical sensing is to achieve both quantitative sensitivity and *** atomically thick films with remarkable optoelectronic tunability,graphene and its derived materials have shown unique potential as a chemically tunable platform for sensing,thus enabling significant performance enhancement,versatile functionalization and flexible device ***,we demonstrate a partially reduced graphene oxide(prGO)inner-coated and fiber-calibrated Fabry-Perot dye resonator for biochemical *** functionalization in the prGO film enables the intracavity fluorescent resonance energy transfer(FRET)to be chemically selective in the visible ***,by measuring the intermode interference via noise canceled beat notes and locked-in heterodyne detection with Hz-level precision,we achieved individual molecule sensitivity for dopamine,nicotine and single-strand DNA *** work combines atomic-layer nano{2. and high-resolution optoelectronics,providing a way toward high-performance biochemical sensors and systems.

关键词： resonator versatile enable

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Zirconia quantum dots for a nonvolatile resistive random access memory device

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Frontiers of information Technology & electronic {2. 2019年第12期20卷 1698-1705页

作者： Xiang-lei HE Rui-jie TANG Feng yang Mayameen SKADHIM Jie-xin WANG Yuan PU Dan WANG State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China MoE Key Laboratory of Advanced Technology of Materials School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China

We propose a nonvolatile resistive random access memory device by employing nanodispersion of zirconia(ZrO2. quantum dots(QDs) for the formation of an active layer. The memory devices comprising a typical sandwich structure of Ag(top)/ZrO2.active layer)/Ti(bottom) are fabricated using a facile spin-coating method. The optimized device exhibits a high resistance state/low resistance state resistance difference(about 10 Ω), a good cycle performance(the number of cycles larger than 100), and a relatively low conversion current(about 1 μA). Atomic force microscopy and scanning electron microscope are used to observe the surface morphology and stacking state of the ZrO2.active layer. Experimental results show that the ZrO2.active layer is stacked compactly and has a low roughness(Ra=4.49 nm) due to the uniform distribution of the ZrO2.QDs. The conductive mechanism of the Ag/ZrO2.Ti device is analyzed and studied, and the conductive filaments of Ag ions and oxygen vacancies are focused on to clarify the resistive switching memory behavior. This study offers a facile approach of memristors for future electronic applications.

关键词： Zirconia quantum dot Resistive switching Memory device Spin coating

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A novel 3780-point FFT processor scheme for the time domain synchronous OFDM system

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Journal of Zhejiang university-science C(Computers and {2.s) 2011年第12期12卷 1021-1030页

作者： Ji-nan LENG lei XIE Hui-fang CHEN Kuang WANG department of information {2. and electronic engineering Zhejiang University Hangzhou 31002 7 China Zhejiang Provincial Key Laboratory of lnformation Network Technology Hangzhou 310027 China

The 3780-point FFT is a main component of the time domain synchronous OFDM （TDS-OFDM） system and the key technology in the Chinese Digital Multimedia/TV Broadcasting-Terrestrial （DMB-T） national standard. Sinc, e 3780 is not a power of 2. the classical radix-2.or radix-4 FFT algorithm cannot be applied directly. Hence, the Winograd Fourier transform algorithm （WFTA） and the Good-Thomas prime factor algorithm （PFA） are used to implement the 3780-point FFT processor. However, the structure based on WFTA and PFA has a large computational complexity and requires many DSPs in hardware implementation. In this paper, a novel 3780-point FFT processor scheme is proposed, in which a 60x63 iterative WFTA architecture with different mapping methods is imported to replace the PFA architecture, and an optimized CoOrdinate Rotation Digital Computer （CORDIC） module is used for the twiddle factor multiplications. Compared to the traditional scheme, our proposed 3780-point FFT processor scheme reduces the number of multiplications by 45% at the cost of 1% increase in the number of additions. All DSPs are replaced by the optimized CORDIC module and ROM. Simulation results show that the proposed 3780-point FFT processing scheme satisfies the requirement of the DMB-T standard, and is an efficient architecture for the TDS-OFDM system.

关键词： 3780 CoOrdinate Rotation Digital Computer (CORDIC) Digital Multimedia/TV Broadcasting-Terrestrial (DMB-T) FFT Time domain synchronous OFDM (TDS-OFDM) Winograd Fourier transform algorithm (WFTA)

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tuf基因同源超表达对植物乳杆菌LR-1生理行为的影响

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食品科学 2019年第8期40卷 48-55页

作者：刘蕾厍晓钱杨李娅琳聂蓉饶瑜西华大学食品与生物工程学院四川成都610039

采用同源超表达及电转化技术,构建植物乳杆菌LR-1的tuf基因超表达重组菌株,对重组菌株的生长情况、抗胁迫能力、黏附能力及生物被膜形成能力进行分析,并检测tuf基因超表达对其他基因的转录水平的影响。结果表明:tuf基因超表达对菌株LR-... 详细信息

采用同源超表达及电转化技术,构建植物乳杆菌LR-1的tuf基因超表达重组菌株,对重组菌株的生长情况、抗胁迫能力、黏附能力及生物被膜形成能力进行分析,并检测tuf基因超表达对其他基因的转录水平的影响。结果表明:tuf基因超表达对菌株LR-1的生长情况无非常显著的影响,但可以增强其耐热性能、黏附性能及生物被膜形成能力,且对糖酵解途径参与基因、II型群感关键基因及核糖激酶编码基因fba、pgm、gap、luxS和rib的转录水平具有上调作用。以上结果对乳杆菌的基因功能研究具有参考意义,同时为基因工程菌株在发酵菌剂或益生菌剂的开发应用领域提供了理论支持。

关键词：植物乳杆菌 tuf同源超表达抗胁迫黏附能力生物被膜

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气溶胶质量浓度测量系统的设计与实现

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电子器件 2017年第5期40卷 1244-1249页

作者：沈雷顾芳张加宏冒晓莉刘毅南京信息工程大学江苏省大气环境与装备技术协同创新中心南京210044 南京信息工程大学江苏省气象探测与信息处理重点实验室南京210044 南京信息工程大学电子与信息工程学院南京210044 南京信息工程大学物理与光电工程学院南京210044

为监测近地面气溶胶颗粒,设计了基于单粒子光散射法的气溶胶质量浓度测量系统。通过高速AD9656转换器与FPGA多通道采集卡对前端光学传感器输出信号进行采集,并由STM32.控制器结合分形反演模型完成气溶胶质量浓度的测定,测量结果通过无... 详细信息

为监测近地面气溶胶颗粒,设计了基于单粒子光散射法的气溶胶质量浓度测量系统。通过高速AD9656转换器与FPGA多通道采集卡对前端光学传感器输出信号进行采集,并由STM32.控制器结合分形反演模型完成气溶胶质量浓度的测定,测量结果通过无线模块传输至云端。实验表明:对于烟尘和空气样品,分形模型反演的质量浓度值与标准值吻合较好,拟合直线斜率分别为0.962.57和0.906 38,相关系数均高于0.99,表明提出的气溶胶质量浓度测量系统具有一定的实用价值。

关键词：气溶胶质量浓度光散射高速AD转换器多通道信号采集电路信号幅度分布

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Dynamic Nonreciprocity with a Kerr Nonlinear Resonator

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Chinese Physics Letters 2022年第12期39卷 28-34页

作者： Rui-Kai Pan lei Tang Keyu Xia Franco Nori College of engineering and Applied sciences National Laboratory of Solid State Microstructuresand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China College of Physics and electronic engineering Sichuan Normal UniversityChengdu 610101China Jiangsu Key Laboratory of Artificial Functional Materials Nanjing UniversityNanjing 210023China Shishan Laboratory Suzhou Campus of Nanjing UniversitySuzhou 215000China RIKEN Quantum Computing Center RIKEN Cluster for Pioneering ResearchWako-shiSaitama 351-0198Japan Physics department The University of MichiganAnn ArborMichigan 48109-1040USA

On-chip optical nonreciprocal devices are vital components for integrated photonic systems and scalable quantum information *** optical isolators and circulators have attracted considerable attention because of their fundamental interest and their important advantages in integrated photonic ***,optical nonreciprocal devices based on Kerr or Kerr-like nonlinearity are subject to dynamical reciprocity when the forward and backward signals coexist simultaneously in a nonlinear ***,we theoretically propose a method for realizing on-chip nonlinear isolators and circulators with dynamic *** nonreciprocity is achieved via the chiral modulation on the resonance frequency due to coexisting self-and cross-Kerr nonlinearities in an optical ring *** work showing dynamic nonreciprocity with a Kerr nonlinear resonator can be an essential step toward integrated optical isolation.

关键词： Nonlinear nonlinear reciprocal

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Improvement in magnetic properties,corrosion resistance and microstructure of Nd-Fe-B sintered magnets through intergranular addition of Tb_(68)Ni_(32.

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Journal of Rare Earths 2022年第5期40卷 784-791,I0004页

作者： Jia Li Qingrong Yao Weichao Huang Jue Xie Zhilin Mo Jianqiu Deng Jiang Wang Guanghui rao Huaiying Zhou Guangxi Key Laboratory of information Materials School of Materials Science and EngineeringGuilin University of Electronic TechnologyGuilin 541004China china Rare Metals and Rare Earth(Guangxi)Jinyuan New Materials Co. Ltd.Hezhou 542603China

New energy vehicles and offshore wind power industries have a high demand for sintered Nd-Fe-B magnets with high intrinsic coercivity and high corrosion *** this study,the magnetic properties,anticorrosion properties,and micro structure of Nd-Fe-B sintered magnets with the intergranular addition of low-melting-point eutectic Tb_(68)Ni_(32. alloy powders were *** aim is to determine if the addition of Tb_(68)Ni_(32. can improve these properties.A low melting-point eutectic alloy Tb_(68)Ni_(32. powders was prepared as a grain boundary additive and blended with the master alloy powders prior to *** coercivity of the resultant magnets gradually increases from 1468 to 2.51 kA/m by adding increasing amounts of Tb_(68)Ni_(32..At the same time,the remanence first increases and then slightly *** studying the microstructure and elemental composition of the Tb_(68)Ni_(32. added magnets,it is found that the significant increase in coercivity and the negligible reduction in remanence is due to densificatio n,improved grain orientation,a unifo rm and continuous boundary phase distribution,as well as the generation of a(Nd,Pr,Tb)_(2. Fe_(14)B "core-shell" structure surrounding the main-phase ***,the corrosion resistance of the magnet is greatly improved owing to the enhancement of electrochemical stability,as well as the optimization of the distribution and morphology of the intergranular phase.

关键词： Nd-Fe-B sintered Magnets Tb_(68)Ni_(32.alloy Magnetic properties Corrosion resistance Microstructure Rare earths

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Two-stage local constrained sparse coding for fine-grained visual categorization

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science china({2. sciences) 2018年第1期61卷 273-275页

作者： Lihua GUO Chenggang GUO lei LI Qinghua HUANG Yanshan LI Xuelong LI School of electronic and information {2. South China University of Technology College of information engineering Shenzhen University The Center for OPTical IMagery Analysis and Learning (OPTIMAL) State Key Laboratory of Transient Optics and PhotonicsXi’an Institute of Optics and Precision Mechanics Chinese Academy of Sciences

Fine-grained visual categorization(FGVC)[1,2.classifies the objects into categories which are both visually and semantically ***,the FGVC has included many species,i.e.,flowers,birds,and *** these species,all categori... 详细信息

关键词： HOG Two-stage local constrained sparse coding for fine-grained visual categorization HMP

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Optimal Deployment Patterns for k-Coverage and k-Connectivity 3D WSNs in Underground Tunnel

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Journal of electronic science and Technology 2017年第3期15卷 303-312页

作者： Wang-Sheng Fang Gao-Xiang lei Zhong-Dong Hu Jin Li Faculty of information engineering Jiangxi University of Science and technology Ganzhou 341000

In this paper,we first model the mining structure as a arched shape in terms of the tunnel *** on the regularly placement of nodes in that model,a set of deployment patterns for seamless coverage and k-connectivity is proposed,i.e.1-and ***,we figure out the maximum horizontal distance of tangent plane to determine the placement of nodes for k-coverage（k=1,2..Besides,the mathematical relations between the communication radius and the sensing radius are derived,when the network keeps k-coverage（k=1,2. and k-connectivity（k=2.3） under certain regularity constrains for various ***,we demonstrate the optimality of several approaches that we have proposed in the aspect of energy consumption and network lifetime.

关键词： Index Terms--Arched mine tunnel coverage,connectivity deployment patterns maximum horizontaldistance wireless sensor network (WSN).

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MOF-Like 3D Graphene-Based Catalytic Membrane Fabricated by One-Step Laser Scribing for Robust Water Purification and Green Energy Production

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Nano-Micro Letters 2022年第11期14卷 48-61页

作者： Xinyu Huang Liheng Li Shuaifei Zhao lei Tong Zheng Li Zhuiri Peng Runfeng Lin Li Zhou Chang Peng Kan-Hao Xue Lijuan Chen Gary J.Cheng Zhu Xiong lei Ye School of Optical and electronic information and Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China Hubei yangtze Memory Laboratories Wuhan 430205People’s Republic of China Institute for Frontier Materials Deakin UniversityGeelongVIC 3216Australia Key Laboratory of New Processing Technology for Nonferrous Metal and Materials(Ministry of Education) Guangxi Key Laboratory of Optical and Electronic Materials and DevicesCollege of Materials Science and EngineeringGuilin University of TechnologyGuilin 541004People’s Republic of China College of Chemistry and Materials science Hunan Agricultural UniversityHunan 410128People’s Republic of China School of Material science and engineering Hunan University of Science and TechnologyXiangtanHunan ProvincePeople’s Republic of China School of Industrial engineering and Birck Nanotechnology Centre Purdue UniversityWest LafayetteIN 47907USA Institute of Environmental Research at Greater Bay Key Laboratory for Water Quality and Conservation of the Pearl River DeltaMinistry of EducationGuangzhou UniversityGuangzhou 510006GuangdongPeople’s Republic of China

Increasing both clean water and green energy demands for survival and development are the grand challenges of our ***,we successfully fabricate a novel multifunctional 3D graphene-based catalytic membrane(3D-GCM)with active metal nanoparticles(AMNs)loading for simultaneously obtaining the water purification and clean energy generation,via a“green”one-step laser scribing *** as-prepared 3D-GCM shows high porosity and uniform distribution with AMNs,which exhibits high permeated fluxes(over 100 L m^(−2. h^(−1))and versatile super-adsorption capacities for the removal of tricky organic pollutants from wastewater under ultra-low pressure-driving(0.1 bar).After adsorption saturating,the AMNs in 3D-GCM actuates the advanced oxidization process to self-clean the fouled membrane via the catalysis,and restores the adsorption capacity well for the next time membrane *** importantly,the 3D-GCM with the welding of laser scribing overcomes the lateral shear force damaging during the long-term ***,the 3D-GCM could emit plentiful of hot electrons from AMNs under light irradiation,realizing the membrane catalytic hydrolysis reactions for hydrogen energy ***“green”precision manufacturing with laser scribing technology provides a feasible technology to fabricate high-efficient and robust 3D-GCM microreactor in the tricky wastewater purification and sustainable clean energy production as well.

关键词： 3D graphene Laser scribing Catalytic membrane Water purification Hydrogen production

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