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Simulations of single event effects on the ferroelectric capacitor-based non-volatile SRAM design

science China(Information sciences) 2021年第4期64卷 238-240页

作者： Jianjian WANG Jinshun BI Gang LIU Hua BAI Kai XI Bo LI Sandip MAJUMDAR Lanlong JI Ming LIU Zhangang ZHANG Institute of Microelectronics Chinese Academy of Sciences School of Electronics and Information Engineering Tianjin Polytechnic University Beijing Relitech Co. Ltd. Department of Science and Technology ICFAI University Tripura Science and Technology on Reliability Physics and Application of Electronic Component Laboratory China Electronic Product Reliability and Environmental Testing Research Institute

Dear editor,Non-volatile static random access memory (nvS RAM) with a 6-transistor 2-ferroelectric capacitor (6T2C) structure has been proposed, which meets requirements such as high operating speed and non-volatile m... 详细信息

关键词： Information Systems and Communication Service

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Blockwise perturbative corrections in multiconfiguration calculations based on configuration-state-function generators: A revised analysis of the W xxxviii spectrum

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Physical Review A 2025年第4期111卷 042805-042805页

作者： Yanting Li Chaofan Shi Ran Si Kai Wang Per Jönsson Gediminas Gaigalas Michel Godefroid Chongyang Chen Shanghai EBIT Laboratory Key Laboratory of Nuclear Physics and Ion-beam Application Institute of Modern Physics Department of Nuclear Science and Technology Fudan University Shanghai 200433 China Department of Physics and Anhui Key Laboratory of Optoelectric Materials Science and Technology Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Normal University Wuhu 241000 China Hebei Key Laboratory of Optic-Electronic Information and Materials The College of Physics Science and Technology Hebei University Baoding 071002 China Department of Materials Science and Applied Mathematics Malmö University SE-20506 Malmö Sweden Institute of Theoretical Physics and Astronomy Vilnius University 010222 Vilnius Lithuania Spectroscopy Quantum Chemistry and Atmospheric Remote Sensing Université Libre de Bruxelles Bruxelles Belgium

A methodology based on configuration-state-function generators (CSFGs) has recently been implemented in the General-Purpose Relativistic Atomic Structure Package (grasp) to reduce the computational load of configuration-interaction (CI) calculations Y. T. Li et al., Comput. Phys. Commun. 283, 108562 (2023). Large CI calculations can be performed if part of the interaction is treated perturbatively. Here, we present enhancements to the perturbative estimates by implementing blockwise methods, where the blocks are given by configuration-state-functions spanned by CSFGs. We compute excitation energies for 4s24p64d, 4s24p64f, and 4s24p54d2 states in Rb-like W37+ and corresponding transition wavelengths and rates to evaluate the methods. The final relative difference between calculated and experimental wavelengths is 0.01%. Thus, the calculations provide highly accurate values for W37+ properties useful for a variety of applications, including fusion applications.

关键词： Excitation energy

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Pressure-stabilized superconducting electride Li5C

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Physical Review B 2022年第5期106卷 054519-054519页

作者： Qinfang Wang Wenwen Cui Kun Gao Ju Chen Tingting Gu Meixu Liu Jian Hao Jingming Shi Yinwei Li Laboratory of Quantum Functional Materials Design and Application School of Physics and Electronic Engineering Jiangsu Normal University Xuzhou 221116 China Department of Physics School of Physics and Electronic Science East China Normal University Shanghai 200241 China Shandong Key Laboratory of Optical Communication Science and Technology School of Physical Science & Information Technology of Liaocheng University Liaocheng 252059 China

The search for electrides has recently attracted great interest owing to their unique physical properties, such as superconductivity. Li5C has been proposed as a candidate electride with a high superconducting critical temperature Tc of 48 K originating mainly from the localized electrons. Here, a combination of structure searches and first-principles calculations has been performed to acquire the phase diagrams of a Li-C system at high pressure. The structure searches unraveled four successive structures under pressure for Li5C that are energetically more stable than the previously proposed superconducting one. The dimension of the localized electrons in Li5C decreases under compression due to the reduced interstitial voids. Electron-phonon calculations demonstrated that the four Li5C phases are superconductors with a maximum Tc of 5.7 K, excluding its possibility of high superconductivity. Analysis showed that the host hybridized electrons, instead of interstitial electrons, contribute mainly to the superconductivity in Li5C.

关键词： First-principles calculations Phase transitions Pressure effects Superconductivity

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A single-shot pump-probe technique for measuring ultrafast absorption dynamics in a single-beam basis

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Optik 2023年第1期287卷

作者： Yu, Tianchen Yang, Junyi Zhou, Wenfa Li, Zhongguo Wu, Xingzhi Fang, Yu Song, Yinglin School of Physical Science and Technology Soochow University Suzhou215006 China Department of Physics Harbin Institute of Technology Harbin150001 China School of Electronic and Information Engineering Changshu Institute of Technology Changshu215500 China Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Mathematics and Physics Suzhou University of Science and Technology Suzhou215009 China

We demonstrate a single-shot pump-probe technique in a single-beam basis. A transmissive annular echelon is used to spatially encode a single pulse, and generates a pump pulse and a probe pulse train with approximately 8 ps delay time and 40 fs time interval. Using this technique, we studied the ultrafast absorption dynamics of ZnSe at a wavelength of 515 nm. And our results indicate the ZnSe has an ultrafast two-photon absorption process and a slow carrier absorption process at 515 nm. In addition, with the help of a neutral density filter (ND), we also investigated the effect of probe intensity on the experimental results. © 2023 Elsevier GmbH

关键词： Selenium compounds

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High energy storage density in NaNbO_(3) antiferroelectrics with double hysteresis loop

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Journal of Materiomics 2024年第5期10卷 1026-1035页

作者： Li Ma Zhenpei Chen Gengguang Luo Zhiyi Che Chao Xu Dongliang Shan Zhenyong Cen Qin Feng Xiyong Chen Toyohisa Fujita Ye Zhu Yunya Liu Jing-Feng Li Shujun Zhang Nengneng Luo State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning530004China School of Chemistry and Chemical Engineering Guangxi UniversityNanning530004China Department of Applied Physics Research Institute for Smart EnergyThe Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education School of Materials Science and EngineeringXiangtan UniversityXiangtan411105HunanChina State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Institute for Superconducting and Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongWollongongNSW2500Australia

Antiferroelectrics(AFEs)possess great potential for high performance dielectric capacitors,due to their distinct double hysteresis loop with high maximum polarization and low remnant ***,the well-known NaNbO_(3) lead-free antiferroelectric(AFE)ceramic usually exhibits square-like P–E loop related to the irreversible AFE P phase to ferroelectric(FE)Q phase transition,yielding low recoverable energy storage density(Wrec).Herein,significantly improved Wrec up to 3.3 J/cm^(3) with good energy storage efficiency(η)of 42.4% was achieved in Na_(0.7)Ag_(0.3)Nb_(0.7)Ta_(0.3)O_(3)(30Agsingle bond30Ta)ceramic with well-defined double P–E loop,by tailoring the A-site electronegativity with Ag+and B-site polarizability with Ta^(5+).The Transmission Electron Microscope,Piezoresponse Force Microscope and in-situ Raman spectra results verified a good reversibility between AFE P phase and high-field-induced FE Q *** improved stability of AFE P phase,being responsible for the double P–E loop and improved Wrec,was attributed to the decreased octahedral tilting angles and cation *** mechanism was revealed by synchrotron X-ray diffraction and Scanning Transmission Electron *** work provides a good paradigm for achieving double P–E loop and high energy storage density in NaNbO_(3)-based ceramics.

关键词： Sodium niobate Antiferroelectrics Double hysteresis loop Energy storage performance Reversibility

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Delay-Beat Differential Phase Demodulation for Laser Phase Noise Immunity in Phase-Sensitive OTDR

Delay-Beat Differential Phase Demodulation for Laser Phase N...

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Asia Communications and Photonics Conference and Exhibition (ACP)

作者： Heng Qian Chuan Li Chengli Li Yunnan Key Laboratory of Computer Technologies Application Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming China Yunnan Key Laboratory of Opo-electronic Information Technology School of Physics and Electronic Information Yunnan Normal University Kunming China

A phase demodulation method immune to laser phase noise based on time-delay beat-frequency coherent Φ-OTDR is proposed. In this method, the two Rayleigh backscattered light beams with time delay are beat with local light beams respectively, and the phase difference of the two beat signals is used instead of the traditional distance-difference phase to obtain the local disturbance information. In this way, the impact of laser phase noise introduce by the distance-difference phase is avoid, and the constraint of laser linewidth on phase demodulation performance is weakened. In the experiment, a demodulation accuracy of -63.5dB rad 2 /Hz is achieved under the condition of a laser with a linewidth of 100kHz, which is improve by 11dB compared to traditional phase demodulation method.

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Coreless optical fiber sensor based on surface plasmon resonance for simultaneous measurement of magnetic field and temperature

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IEEE Sensors Journal 2025年第12期25卷 21581-21588页

作者： Liu, Chao Wang, Weiqiang Lv, Jingwei Wang, Famei Wang, Jianxin Liu, Wei Yi, Zao Liu, Miao Liu, Qiang Chu, Paul K. Northeast Petroleum University School of Physics and Electronic Engineering Daqing163318 China Shenzhen Technology University Shenzhen Key Laboratory of Ultra-Intense Laser and Advanced Material Technology Center for Intense Laser Application Technology College of Engineering Physics Shenzhen518118 China Southwest University of Science and Technology Joint Laboratory for Extreme Conditions Matter Properties Mianyang621010 China Northeast Petroleum University Qinhuangdao Campus Qinhuangdao066044 China City University of Hong Kong Department of Physics Department of Materials Science and Engineering Department of Biomedical Engineering Tat Chee Avenue Kowloon Hong Kong

A dual-parameter sensor based on a coreless optical fiber (CF) is designed for the simultaneous detection of magnetic fields (H) and temperature (T). The side of the coreless optical fiber is polished to form a double D-shape and etched to a certain grove depth on the side surface for gold plating and filling with the magnetic fluid (MF) and polydimethylsiloxane (PDMS). The sensor operates on the principle of surface plasmon resonance (SPR) to achieve magnetic field and temperature sensing. Finite element analysis reveals the modal characteristics of the sensor, showing that the effective magnetic field and temperature detection ranges are 31 to 200 Oe and 20 to 80 °C, respectively. The maximum magnetic field sensitivity and temperature sensitivities are 20.207 nm/Oe and -8.423 nm/°C, respectively. Compared to other dual-parameter magnetic field and temperature sensors currently proposed, the magnetic field sensitivity increases by nearly two orders of magnitude, and the temperature sensitivity increases several times. The structure of photonic crystal fiber or anti-resonant fiber is complex. In contrast, this design offers a simpler structure and fabrication process. The sensor has immense potential in medical diagnosis, environmental detection, and aerospace fields. © 2001-2012 IEEE.

关键词： Optical fiber fabrication

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Metasurface-integrated optofluidic sensing enabled by artificial vision intelligence for identifying liquid chemicals

Metasurface-integrated optofluidic sensing enabled by artifi...

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2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Li, Hongliang Kim, Jin Tae Kim, Jin-Soo Choi, Duk-Yong Lee, Sang-Shin Department of Electronic Engineering Kwangwoon University Seoul01897 Korea Republic of Nano Device Application Center Kwangwoon University Seoul01897 Korea Republic of ICT Creative Research Laboratory Electronics and Telecommunications Research Institute Daejeon34129 Korea Republic of Nano OpticsLaboratory Departmentof Physics Korea University Seoul02841 Korea Republic of Department of Quantum Science and Technology Research School of Physics Australian National University CanberraACT2601 Australia

ISBN: (纸本)9781957171258

The currently used liquid identification techniques are costly, cumbersome, and spectrometer-reliant. In this study, a compact, accurate, and cost-effective method for identifying liquids was presented using visual intelligence algorithms and a metasurface-incorporated optofluidic device incorporated. © Optica Publishing Group 2023 © 2023 The Author(s)

关键词： Cost effectiveness

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Multipartite entanglement serves as a faithful detector for quantum phase transitions

arXiv

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arXiv 2024年

作者： Li, Yan-Chao Zhou, Yuan-Hang Zhang, Yuan Bai, Yan-Kui Lin, Hai-Qing Center of Materials Science and Optoelectronics Engineering College of Materials Science and Opto-Electronic Technology University of Chinese Academy of Sciences Beijing100049 China College of Physics Hebei Key Laboratory of Photophysics Research and Application Hebei Normal University Hebei Shijiazhuang050024 China Zhejiang Institute of Modern Physics School of Physics Zhejiang University Hangzhou310027 China

We investigate quantum phase transitions in various spin chain systems using the multipartite entanglement measure τSEF based on the monogamy inequality of squared entanglement of formation. Our results demonstrate that τSEF is more effective and reliable than bipartite entanglement or bipartite correlation measures such as entanglement of formation, von Neumann entropy, and quantum discord in characterizing quantum phase transitions. τSEF not only detects critical points that may go unnoticed by other detectors but also avoids the issue of singularity at non-critical points encountered by other measures. Furthermore, by applying τSEF, we have obtained the phase diagram for the XY spin chain with three and four interactions and discovered a new quantum phase. Copyright © 2024, The Authors. All rights reserved.

关键词： Phase diagrams

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Dual-grating single-shot pump-probe technique

arXiv

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arXiv 2024年

作者： Yu, Tianchen Yang, Junyi Zhou, Wenfa Li, Zhongguo Wu, Xingzhi Fang, Yu Yang, Yong Song, Yinglin School of Physical Science and Technology Soochow University Suzhou215006 China Department of Physics Harbin Institute of Technology Harbin150001 China School of Electronic and Information Engineering Changshu Institute of Technology Changshu215500 China Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Physical Science and Technology Suzhou University of Science and Technology Suzhou215009 China School of Optoelectronic Science and Engineering Soochow University Suzhou215006 China

A simple and effective single-shot pump-probe technique is reported for studying the ultrafast dynamic processes in various materials. Using only two commercial gratings, a large time window of ~ 95.58 ps is spatially encoded in a single probe pulse, and single-shot time-resolved measurements are implemented. This time window exceeds the maximum reported values for single-shot pump-probe techniques using the echelon or angle beam encoding strategy. The phase difference problem in the echelon encoding strategies is also eliminated and a customized echelon is not needed in this technique. The ultrafast dynamic processes of ZnSe and indolium squaraine at a wavelength of 650 nm were investigated using this technique. Copyright © 2024, The Authors. All rights reserved.

关键词： Selenium compounds

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