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International Applied Computational Electromagnetics Society Symposium (ACES)

作者： Jiefeng Zhou Ling Zhang Da Li Er-Ping Li Key Laboratory of Advanced Micro/Nano Electronic Devices and Smart Systems and Applications Zhejiang University Hangzhou China

ISBN: (数字)9798350355581

ISBN: (纸本)9798350355598

The quasi-one-dimensional (quasi-1D) spoof surface plasmon polariton (SSPP) provides a new route for optically transparent electronic devices. The dispersion curves can control the electromagnetic wave propagation characteristics of the quasi-1D SSPP by manipulating the geometric parameters. However, the dispersion curves of quasi-1D SSPP have not been analytically derived and thoroughly studied. This paper derives the dispersion curves of the quasi-1D SSPP using equivalent permittivity and permeability methods, which can accurately predict the relationship between wave number and its geometric parameters. The simulation results validate the proposed dispersion curves. Based on the dispersion curves, this paper further presents a broadband optically transparent transmission line, which can achieve high-efficiency transmission from 3.0 to 14.4 GHz.

关键词： Surface plasmon polaritons Simulation Electromagnetic waveguides Geometrical optics Broadband communication Permittivity Dispersion Optical devices Optical waveguides Substrates

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Flexible electrical stimulation device with Chitosan-Vaseline®dressing accelerates wound healing in diabetes

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Bioactive Materials 2021年第1期6卷 230-243页

作者： Xiao-Feng Wang Meng-Lu Li Qing-Qing Fang Wan-Yi Zhao Dong Lou Yan-Yan Hu Jun Chen Xiao-Zhi Wang Wei-Qiang Tan Department of Plastic Surgery Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou310016Zhejiang ProvincePR China Key Laboratory of Micro-Nano Electronic Devices and Smart Systems of Zhejiang Province College of Information Science&Electronic EngineeringZhejiang UniversityHangzhou310027Zhejiang ProvincePR China Innovation Center for Signaling Network College of Life SciencesZhejiang UniversityHangzhou310058Zhejiang ProvincePR China

The healing process of diabetic wounds is typically disordered and prolonged and requires both angiogenesis and *** of the endogenous electric fields(EFs)may lead to disordered cell *** stimulation(ES)that mimics endogenous EFs is a promising method in treating diabetic wounds;however,a microenvironment that facilitates cell migration and a convenient means that can be used to apply ES are also ***-Vaseline■gauze(CVG)has been identified to facilitate wound healing;it also promotes moisture retention and immune regulation and has antibacterial *** this study,we created a wound dressing using CVG together with a flexible ES device and further evaluated its potential as a treatment for diabetic *** found that high voltage monophasic pulsed current(HVMPC)promoted healing of diabetic wounds in *** studies carried out in vitro,we found that HVMPC promoted the proliferation and migration of human umbilical vein endothelial cells(HUVECs)by activating PI3K/Akt and ERK1/2 ***,we determined that the flexible ES-chitosan dressing may promoted healing of diabetic wounds by accelerating angiogenesis,enhancing epithelialization,and inhibiting scar *** findings provide support for the ongoing development of this multidisciplinary product for the care and treatment of diabetic wounds.

关键词： Diabetic wounds Flexible electronic device Electrical stimulation Chitosan-vaseline■gauze Wound healing

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An Efficient Method of Calculating Inductance Using Near-Field Data

An Efficient Method of Calculating Inductance Using Near-Fie...

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Workshop on Electromagnetic Compatibility of Integrated Circuits (EMC Compo)

作者： Zhaoyang Feng Chengming Wang Quankun Chen Er-ping Li Key Laboratory of Advanced Micro Nano Electronic Devices & Smart Systems and Applications Zhejiang University Hangzhou China

Inductance coupling, caused by the mutual inductance between two circuits, is a very important factor in electromagnetic interference(EMI). While calculating the interference of a certain interference source to different locations, the traditional method is to simulate each location separately, which takes too long time and takes up more computer resources. This method is not conducive to the calculation of complex models, especially when it is necessary to calculate the mutual inductance of multiple locations in space. This paper proposes a new calculation method, which can quickly calculate the mutual inductance of the loop in any position on the space based on the simulation results, and save a lot of time while ensuring accuracy of results.

关键词： Inductance Integrated circuit modeling Magnetic domains Magnetic separation Interference Magnetic flux Electromagnetic compatibility

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Rapid Detection Technology for Cocaine and Methamphetamine Acute Abuse based on EEG

Rapid Detection Technology for Cocaine and Methamphetamine A...

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2024 International Conference on Next Generation electronics and Photonics, INGEP 2024

作者： Xia, Jie Yuan, Hongwen Pan, Jiadong Li, Kan Zhang, Luxi Dong, Shurong Key Lab. of Advanced Micro/Nano Electronic Devices and Smart Systems of Zhejiang College of Information Science and Electronic Engineering Zhejiang University Hangzhou310027 China HangZhou City University Sports and Aesthetic Education Department Hangzhou310015 China Shanghai Institute of Satellite Engineering shanghai200240 China

Multi-domain characterization and a new fast detection method for acute illegal psychostimulants abuse detection based on waking-state EEG of mice is proposed in this paper. To get corftical electroencephalogram (EEG), three groups of mice were injected with cocaine (Coca), methamphetamine (Meth), and saline (Sali) respectively following the experimental paradigm of drug abuse. The EEG features were extracted out by multi-domain views, including time, frequency, complexity, dynamics, and independent domains to obtain acute drug abuse effects on the brain. New strategy combing time domain with frequency domain is developed as multi-domain input and by means of dimension transformation approach preserving temporal information, the performance of drug abuse detection is greatly improved with deep learning models of ResNet50. Results show that comparing to support vector machine (SVM), k nearest neighbor (kNN), random forest (RF), and long short-term memory fully convolutional networks (LSTM-FCN), Res-Net50 based on our proposed multi-domain features has best F1-score of 95.10%. This promising method provides a low-cost, fast, and widely assisted technology for psychostimulants abuse identification. © Published under licence by IOP Publishing Ltd.

关键词： Decision trees

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Hybrid Signal Integrity Modeling and Analysis of Heterogeneous Integrated System With Neuromorphic Darwin Chip

IEEE Transactions on Signal and Power Integrity

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IEEE Transactions on Signal and Power Integrity 2024年 3卷 37-46页

作者： Chen, Quankun Ma, Hanzhi Li, Da Tao, Tuomin Tan, Shurun Liu, En-Xiao Schutt-Aine, Jose Li, Er-Ping Zhejiang University Key Laboratory of Advanced Micro/Nano Electronic Devices and Smart Systems and Applications College of Information Science and Electronic Engineering Hangzhou310027 China Zhejiang University University of Illinois at Urbana-Champaign Institute Haining314400 China A∗star Institute of High Performance Computing Singapore138632 Singapore University of Illinois at Urbana-Champaign Department of Electrical and Computer Engineering UrbanaIL61820 United States

This article introduces a comprehensive approach for designing and analyzing signal integrity in heterogeneous integrated systems that incorporate neuromorphic Darwin chips. The proposed integrated system architecture includes a neuromorphic Darwin chip, digital signal processing unit, microcontroller unit, field programmable gate arrays, and coding and decoding modules to encode and reconstruct analog spiking signals. The study evaluates the encoding module and the heterogeneous integration structure and conducts signal integrity analysis. To achieve optimal signal integrity performance, the article proposes a novel binocular eye diagram analysis technique. This innovative approach guides the encoding algorithm modification and improves the overall system performance. This research is the first to combine joint field-circuit simulation, heterogeneous integration modeling, and signal integrity analysis of the Darwin neuromorphic chip, and it is expected to serve as a valuable reference for future studies on similar systems. © 2022 IEEE.

关键词： Neural networks

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Author Correction: Observation of two-dimensional time-reversal broken non-Abelian topological states

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Nature communications 2025年第1期16卷 618页

作者： Yuze Hu Mingyu Tong Tian Jiang Jian-Hua Jiang Hongsheng Chen Yihao Yang State Key Laboratory of Extreme Photonics and Instrumentation ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang University Hangzhou China. Institute for Quantum Science and Technology College of Science National University of Defense Technology Changsha China. Shaoxing Institute of Zhejiang University Zhejiang University Shaoxing China. School of Biomedical Engineering Division of Life Sciences and Medicine University of Science and Technology of China Hefei China. jhjiang3@***. Suzhou Institute for Advanced Research University of Science and Technology of China Suzhou China. jhjiang3@***. Department of Modern Physics School of Physical Sciences University of Science and Technology of China Hefei China. jhjiang3@***. State Key Laboratory of Extreme Photonics and Instrumentation ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang University Hangzhou China. hansomchen@***. Shaoxing Institute of Zhejiang University Zhejiang University Shaoxing China. hansomchen@***. International Joint Innovation Center The Electromagnetics Academy at Zhejiang university Zhejiang University Haining China. hansomchen@***. Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang Jinhua Institute of Zhejiang University Zhejiang University Jinhua China. hansomchen@***. State Key Laboratory of Extreme Photonics and Instrumentation ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang University Hangzhou China. yangyihao@***. International Joint Innovation Center The Electromagnetics Academy at Zhejiang university Zhejiang University Haining China. yangyihao@***. Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang Jinhua Institute of Zhejiang University Zhejiang University Jinhua China. yangyihao@***.

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Four-Port SOLR Calibration Algorithm for Symmetric GSSG Probes

Four-Port SOLR Calibration Algorithm for Symmetric GSSG Prob...

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Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)

作者： Jiefeng Zhou Ling Zhang Da Li Junhui Chen Er-Ping Li College of Information Science and Electronic Engineering and The Zhejiang Key Laboratory of Advanced Micro/Nano Electronic Devices & Smart Systems and Applications Zhejiang University Hangzhou China

This paper proposes an efficient four-port short-open-load-reciprocity (SOLR) calibration algorithm for the symmetric Ground-Signal-Signal-Ground (GSSG) probes used for on-wafer S-parameter testing. This algorithm only needs four measurements, including one reciprocal Thru and three traditional calibration standards including Open, Short, and Load. Additionally, the exact S-parameters of the Thru are not mandatorily required. The correctness and effectiveness of the proposed algorithm is validated and corroborated by full-wave simulations up to 100 GHz.

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A fast method of irregular MIMO antenna far-field pattern based on characteristic mode analysis

A fast method of irregular MIMO antenna far-field pattern ba...

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IEEE International Wireless Symposium (IWS)

作者： Jialong Xie Ruifeng Li Jinyan Ma Da Li Er-Ping Li The Zhejiang Key Laboratory of Advanced Micro/Nano Electronic Devices & Smart Systems and Applications College of Information Science and Electronic Engineering Zhejiang University Hangzhou China

ISBN: (数字)9798350389999

ISBN: (纸本)9798350390001

A fast method for calculating the pattern of irregular MIMO antennas based on characteristic mode analysis and coupling matrix is presented in this paper. The radiation characteristics of each antenna are characterized by the characteristic mode analysis, and the interaction between antenna elements is characterized by the establishment of array coupling matrix. Unlike traditional simulation software that requires time-consuming re-modeling for each structural variation, our method only needs to modify the array coupling matrix to quickly solve the array antenna pattern. Two examples of irregular dipole antenna array and patch antenna array are used to verify the method, which demonstrate our method's ability to achieve high precision in significantly less time than conventional methods.

关键词： Couplings Wireless communication Dipole antennas Patch antennas Software Characteristic mode analysis Antenna arrays Antenna radiation patterns

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A Novel Miniaturized Zigzag Hexagonal Frequency Selective Surface

A Novel Miniaturized Zigzag Hexagonal Frequency Selective Su...

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IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)

作者： Jialong Xie Xiaodong An Da Li Hanzhi Ma Er-Ping Li The Zhejiang Key Laboratory of Advanced Micro/Nano Electronic Devices & Smart Systems and Applications College of Information Science and Electronic Engineering Zhejiang University Hangzhou China

A novel miniaturized zigzag hexagonal frequency selective surface (FSS) element is proposed, where the structure has a dual-polarized angular stable passband. The FSS resonates at 4.0GHz, with a $3 \mathrm{~dB}$ passband spanning from 3.1 GHz to 4.72GHz, accommodating both transverse electric (TE) and transverse magnetic (TM) polarizations. Impressively, even at a 60° incidence angle, the shift in the transmission zero for the TE polarized wave is a mere 0.3%, demonstrating notable stability in terms of polarization and angular response.

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The Method of Locating Electromagnetic Radiation Source in Wire Bonded Ball Grid Array Package

The Method of Locating Electromagnetic Radiation Source in W...

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Workshop on Electromagnetic Compatibility of Integrated Circuits (EMC Compo)

作者： Guang-Lai Hu Hang Jin Tuo-Min Tao Er-Ping Li College of Information Science & Electronic Engineering The Key Laboratory of Advanced Micro/Nano Electronic Devices & Smart Systems and Applications Zhejiang University Hangzhou China

With the development of integrated circuit technology, electromagnetic interference (EMI) problems become more and more prominent, and finding the location of the radiation source has become increasingly critical. This paper proposes a method to accurately locate the radiation source of the wire bonded ball grid array (WB-BGA) package. Firstly, the potential radiation sources of WB-BGA package are investigated. Secondly, an accurate three-dimensional full-wave simulation model of WB-BGA package is established. Finally, 3-m far-field radiation of potential radiation sources is obtained by simulation, where the radiation source is the largest one.

关键词： Integrated circuit modeling Inductance System-on-chip Electromagnetic interference Substrates Dielectrics Electromagnetic compatibility

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