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reconfigurable and polarization-dependent optical filtering for transflective full-color generation utilizing low-loss phase-change materials

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Journal of Semiconductors 2024年第7期45卷 46-53页

作者： Shuo Deng Mengxi Cui Jingru Jiang Chuang Wang Zengguang Cheng Huajun Sun Ming Xu Hao Tong Qiang He Xiangshui Miao School of Integrated Circuits Huazhong University of Science and TechnologyWuhan 430074China Hubei Yangtze Memory Laboratories Wuhan 430205China School of Microelectronics Fudan UniversityShanghai 200433China

All-dielectric metasurface, which features low optical absorptance and high resolution, is becoming a promising candidate for full-color generation. However, the optical response of current metamaterials is fixed and lacks active tuning. In this work, we demonstrate a reconfigurable and polarization-dependent active color generation technique by incorporating low-loss phase change materials(PCMs) and CaF_2 all-dielectric substrate. Based on the strong Mie resonance effect and low optical absorption structure, a transflective, full-color with high color purity and gamut value is achieved. The spectrum can be dynamically manipulated by changing either the polarization of incident light or the PCM state. High transmittance and reflectance can be simultaneously achieved by using low-loss PCMs and substrate. The novel active metasurfaces can bring new inspiration in the areas of optical encryption, anti-counterfeiting, and display technologies.

关键词： structural color reconfigurable all-dielectric metasurfaces phase change material

reconfigurable Mott electronics for homogeneous neuromorphic platform

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Chinese Physics B 2023年第12期32卷 67-72页

作者：杨振路英明杨玉超 Beijing Advanced Innovation Center for Integrated Circuit School of Integrated CircuitsPeking UniversityBeijing 100871China School of Electronic and Computer Engineering Peking UniversityShenzhen 518055China Center for Brain Inspired Chips Institute for Artificial IntelligenceFrontiers Science Center for Nano-optoelectronicsPeking UniversityBeijing 100871China Center for Brain Inspired Intelligence Chinese Institute for Brain ResearchBeijing 102206China

To simplify the fabrication process and increase the versatility of neuromorphic systems,the reconfiguration concept has attracted much ***,we developed a novel electrochemical VO_(2)(EC-VO_(2))device,which can be reconfigured as synapses or LIF *** ionic dynamic doping contributed to the resistance changes of VO_(2),which enables the reversible modulation of device *** analog resistance switching and tunable LIF functions were both measured based on the same device to demonstrate the capacity of *** on the reconfigurable EC-VO_(2),the simulated spiking neural network model exhibited excellent performances by using low-precision weights and tunable output neurons,whose final accuracy reached 91.92%.

关键词： Mott electronics reconfigurable neuromorphic computing VO_(2)

reconfigurable dual-band low noise amplifier design and realization

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Journal of Semiconductors 2014年第5期35卷 86-92页

作者：唐旭升黄风义张有明唐欣 RF & OEIC Research Institute National Mobile Communications Research Laboratory Southeast University

A reconfigurable dual-band LNA is presented. The LNA employs switching capacitors and circuit in to realize the dual-band operation. These methodologies are used to design and implement a reconfigurable LNA for IMT-A and UWB application. The LNA is implemented using TSMC-0.13 μm CMOS technology. Measured performance shows an input matching of better than -13.5 dB, a voltage gain of 18-22.8 dB, with an NF of 4.3-4.7 dB in the band of 3.4-3.6 GHz, and an input matching of better than -9.7 dB, a voltage gain of 14.7-22.4 dB, and with an NF of 3.7-4.9 dB in the band of 4.2-4.8 GHz. According to the measure results, the proposed LNA achieves dual-band operation, and it proves the feasibility of the proposed topology.

关键词： LNA reconfigurable dual-band IMT-A UWB CMOS

reconfigurable design and implementation of the MD6 Hash function

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The Journal of China Universities of Posts and Telecommunications 2010年第2期17卷 109-115页

作者： GAO Xian-wei Department of Electronic and Information Engineering,Beijing Electronic Science and Technology Institute,Beijing 100070,China [a] Department of Electronic Information Engineering Beijing Electronic Science Technology Institute Beijing 100070 China

Efficient reconfigurable field programmable gate array （FPGA） architectures for the MD6-224/256/384/512 Hash algorithm are proposed in this article. The basic iterative compact design requires 923 ALMs and achieves a throughput ranging from 225 Mbit/s to 394 Mbit/s at a maximum frequency of 198 MHz. The 32-step-urtrolled high-throughput design requires 7 090 ALMs and achieves a throughput ranges from 5 776 Mbit/s to 9 490 Mbit/s at a maximum frequency of 173 MHz. The simulation results show that high flexibility and efficient FPGA implementation of the MD6 Hash function is achieved.

关键词： SHA-3 MD6 reconfigurable iterative loop-unrolling

reconfigurable Plasmonic Nanostructures Controlled by DNA Origami

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Chemical Research in Chinese Universities 2020年第2期36卷 296-300页

作者： LONG Qipeng YU Hanyang LI Zhe Department of Biomedical Engineering College of Engineering and Applied SciencesNanjing UniversityNanjing 210093P.R.China

Precise surface functionalization and reconfigurable capability of nanomaterials are essential to construct complex nanostructures with specific *** we show tire assembly of a reconfigurable plasmonic nanostructure,which executes both conformational and plasmonic changes in response to DNA *** this work,different sized gold nanoparticles(AuNPs)were arranged site-specifically on the surface of a DNA origami clamp *** opening and closing of the DNA origami clamp could be precisely controlled by a series of strand emplacement ***,the patterns of these AuNPs could be switched between two different *** observed plasmon band shift indicates the change of the plasmonic interactions among the assembled *** study achieves the construction of reconfigurable nanomaterials with tunable plasmonic interactions,and will enrich the toolbox of DNA-based functional nanomachinery.

关键词： DNA origami Gold nanoparticle reconfigurable nanostructure Plasmonic nanostructure

reconfigurable metasurfaces that enable light polarization control by light

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Light(Science & Applications) 2016年第1期5卷 74-78页

作者： Meng-Xin Ren Wei Wu Wei Cai Biao Pi Xin-Zheng Zhang Jing-Jun Xu The Key Laboratory of Weak-Light Nonlinear Photonics Ministry of EducationSchool of Physics and TEDA Institute of Applied PhysicsNankai UniversityTianjin 300071China The 2011 Project Collaborative Innovation Center for Biological Therapy Nankai UniversityTianjin 300071China

Plasmonic metasurfaces have recently attracted much attention because of their novel characteristics with respect to light polarization and wave front control on deep-subwavelength *** development of metasurfaces with reconfigurable optical responses is opening new opportunities in high-capacity communications,real-time holograms and adaptive *** tunable devices have been developed in the mid-infrared spectral range and operated in light intensity modulation *** we present a novel optically reconfigurable hybrid metasurface that enables polarization tuning at optical *** functionality of tuning is realized by switching the coupling conditions between the plasmonic modes and the binary isomeric states of an ethyl red switching layer upon light *** achieved more than 20°nonlinear changes in the transmitted polarization azimuth using just 4 mW of switching light *** design schemes and principles could be easily applied to dynamically adjust the functionalities of other metasurfaces.

关键词： azo ethyl red metasurfaces nonlinear polarization modulation photoisomerization reconfigurable

High Q-factor reconfigurable microresonators induced in side-coupled optical fibres

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Light(Science & Applications) 2023年第12期12卷 1867-1876页

作者： Victor Vassiliev Michael Sumetsky Aston Institute of Photonic Technologies Aston UniversityBirmingham B47ETUK

High Q-factor monolithic optical microresonators found numerous applications in classical and quantum optical signal processing,microwave photonics,ultraprecise sensing,as well as fundamental optical and physical ***,due to the solid structure of these microresonators,attaining the free spectral range tunability of most of them,critical for several of these applications,was,so far,*** address this problem,here we experimentally demonstrate that the side-coupling of coplanar bent optical fibres can induce a high Q-factor whispering gallery mode optical *** changing the curvature radius of fibres from the centimetre order to the millimetre order,we demonstrate fully mechanically reconfigurable optical microresonators with dimensions varying from the millimetre order to 100-micron order and free spectral range varying from a picometre to ten picometre *** developed theory describes the formation of the discovered microresonators and their major properties in a reasonable agreement with the experimental *** new microresonators may find applications in cavity QED,microresonator optomechanics,frequency comb generation with tuneable repetition rate,tuneable lasing,and tuneable processing and delay of optical pulses.

关键词： reconfigurable resonator repetition

Early faults prediction of running state of electromechanical systems and reconfigurable integration of series safety monitoring systems

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仪器仪表学报 2014年第S2期35卷 224-232页

作者： Xu Xiaoli Zuo Yunbo Chen Tao Liu Xiuli Chen Shanpeng Key Laboratory of Modern Measurement & Control Technology Ministry of Education Beijing Information Science and Technology University School of Mechanical and Vehicle Engineering Beijing Institute of Technology Department of Environmental Science and Engineering Faculty of Bioresources Mie University

Fault prediction technology of running state of electromechanical systems is one of the key technologies that ensure safe and reliable operation of electromechanical equipment in health state. For multiple types of modern, high-end and key electromechanical equipment, this paper will describe the early faults prediction method for multi-type electromechanical systems, which is favorable for predicting early faults of complex electromechanical systems in non-stationary, nonlinear, variable working conditions and long-time running state; the paper shall introduce the reconfigurable integration technology of series safety monitoring systems based on which the integrated development platform of series safety monitoring systems is built. This platform can adapt to integrated R&D of series safety monitoring systems characterized by high technology, multiple species and low volume. With the help of this platform, series safety monitoring systems were developed, and the Remote Network Security Monitoring Center for Facility Groups was built. Experimental research and engineering applications show that: this new fault prediction method has realized the development trend features extraction of typical electromechanical systems, multi-information fusion, intelligent information decision-making and so on, improving the processing accuracy, relevance and applicability of information; new reconfigurable integration technologies have improved the integration level and R&D efficiency of series safety monitoring systems as well as expanded the scope of application; the series safety monitoring systems developed based on reconfigurable integration platform has already played an important role in many aspects including ensuring safety operation of equipment, stabilizing product quality, optimizing running state, saving energy consumption, reducing environmental pollution, improving working conditions, carrying out scientific maintenance, advancing equipment utilization, saving mainten

关键词： electromechanical systems early faults safety control monitoring systems reconfigurable integration

A novel reconfigurable variable gain amplifier for a multi-mode multi-band receiver

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Journal of Semiconductors 2010年第7期31卷 131-136页

作者：郑家杰莫太山马成炎殷明 Institute of Microelectronics Chinese Academy of Sciences Hangzhou Zhongke Microelectronics Co Ltd

This paper presents a novel approach for designing a reconfigurable variable gain amplifier（VGA） for the multi-mode multi-band receiver system RF front-end *** configuration,which is comprised of gain circuits,control circuit,DC offset cancellation circuit and mode switch circuit is proposed to save die area and power consumption with the function of multi-mode and multi-band through *** VGA is realized in 0.18μm CMOS technology with 1.8 V power supply voltage providing a gain tuning range from 5 to 87 dB when the control voltage varies from 0 to 1.8 *** 3 dB bandwidth is about 80 MHz for all levels of control voltage（all gains）.Also,the DC offset cancellation circuit can effectively suppress DC offset to a value of less than 40 mV at the output regardless of the *** overall power consumption is less than 3 mA,and die area is 705×100μm^2.

关键词： variable gain amplifier multi-mode multi-band reconfigurable