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2024 International Conference on Actual Problems of Electron Devices engineering, APEDE 2024

作者： Svetlov, Mikhail S. L’vov, Alexey A. Martirosyan, Arman M. Martirosyan, David M. Bagaev, Igor S. Khasanov, Semen T. Laboratory of Control and Automation Problems in Mechanical Engineering Institute of Precision Mechanics and Control of RAS Saratov Russia Institute of Institute of Electronic Engineering and Instrumentation Yuri Gagarin State Technical University of Saratov Saratov Russia Institute of Applied Information Technologies and Communications Yuri Gagarin State Technical University of Saratov Saratov Russia Phystech-School of Applied Mathematics and Computer Science Moscow Institute of Physics and Technology Moscow Russia

ISBN: (纸本)9798350393316

This paper proposes a semi-Markov model of telecommunication network (TCN). The variant of dynamic traffic adaptive control of queuing system as a special case of TCN is considered. The main purpose of control is to minimize the average cost per unit of time to service the incoming flow of information (packets). This takes into account the different bandwidth of the channels, the processing speed of information in the channel and the information capacity of the buffers. The approach to the organization of dynamic control taking into account noise immunity (information reliability) and information security is discussed. © 2024 IEEE.

关键词： Bandwidth

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Strong nonlinear optical processes with extraordinary polarization anisotropy in inversionsymmetry broken two-dimensional PdPSe

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Light(science & Applications) 2024年第8期13卷 1524-1533页

作者： Song Zhu Ruihuan Duan Xiaodong Xu Fangyuan Sun Wenduo Chen Fakun Wang Siyuan Li Ming Ye Xin Zhou Jinluo Cheng Yao Wu Houkun Liang Junichiro Kono Xingji Li Zheng Liu Qi Jie Wang School of Electrical and Electronic Engineering Nanyang Technological University639798 SingaporeSingapore School of Material Science and Engineering Nanyang Technological University639798 SingaporeSingapore CINTRA CNRS/NTU/THALES UMI 3288Research Techno PlazaNanyang Technological University637371 SingaporeSingapore School of Materials Science and Engineering Harbin Institute of Technology150001 HarbinChina Department of Chemistry National University of Singapore117543 SingaporeSingapore GPL Photonics Lab State Key Laboratory of Applied OpticsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of Sciences130033 ChangchunChina School of Electronics and Information Engineering Sichuan University610064 ChengduSichuanChina School of Physical and Mathematical Sciences Nanyang Technological University637371 SingaporeSingapore Departments of Electrical and Computer Engineering Physics and Astronomyand Materials Science and NanoEngineeringRice UniversityHoustonTXUSA

Nonlinear optical activities,especially second harmonic generation(SHG),are key phenomena in inversion-symmetrybroken two-dimensional(2D)transition metal dichalcogenides(TMDCs).On the other hand,anisotropic nonlinear optical processes are important for unique applications in nano-nonlinear photonic devices with polarization functions,having become one of focused research topics in the field of nonlinear ***,the strong nonlinearity and strong optical anisotropy do not exist simultaneously in common 2D ***,we demonstrate strong secondorder and third-order susceptibilities of 64 pm/V and 6.2×10^(-19)m^(2)/V^(2),respectively,in the even-layer PdPSe,which has not been discovered in other common TMDCs(e.g.,MoS2).Strikingly,it also simultaneously exhibited strong SHG anisotropy with an anisotropic ratio of~45,which is the largest reported among all 2D materials to date,to the best of our *** addition,the SHG anisotropy ratio can be harnessed from 0.12 to 45(375 times)by varying the excitation wavelength due to the dispersion ofχ^(2)*** an illustrative example,we further demonstrate polarized SHG imaging for potential applications in crystal orientation identification and polarization-dependent spatial *** findings in 2D PdPSe are promising for nonlinear nanophotonic and optoelectronic applications.

关键词： materials anisotropy nonlinear

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Collagen Cryogels Sustain Large-Scale Axial Compression and Cyclic Loading

SSRN

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SSRN 2024年

作者： Luo, Yan Hu, Yuntao Chen, Keyu Purohit, Prashant K. Vining, Kyle H. Mechanical Engineering and Applied Mechanics School of Engineering and Applied Science University of Pennsylvania PhiladelphiaPA United States Robotics School of Engineering and Applied Science University of Pennsylvania PhiladelphiaPA United States Computer and Information Science School of Engineering and Applied Science University of Pennsylvania PhiladelphiaPA United States Materials Science and Engineering School of Engineering and Applied Science University of Pennsylvania PhiladelphiaPA United States Preventive and Restorative Dentistry School of Dental Medicine University of Pennsylvania PhiladelphiaPA United States

Collagen-based cryogels have shown promise as resilient biomaterials capable of sustaining large-scale deformation and cyclic loading under compressive strain. This study investigates the mechanical properties of collagen-glutaraldehyde cryogels, illustrating their performance under varying synthesis conditions, including temperature, cooling rate, and crosslinker concentration. Cryogels synthesized at -20°C with 0.15% w/v glutaraldehyde achieve a stable peak stress of 263kPa with 77.1% maximum stress retention and maintain structural integrity over 20 repetitive loading cycles. A hierarchical structure is achieved by cryogelation and lyophilization, which enhances stress distribution and resilience under large-strain cyclic loading. Second harmonic generation imaging confirms the strain-stiffening behavior and provides insights into the microstructural changes contributing to the material's exceptional mechanical properties. These findings highlight the potential of collagen-glutaraldehyde cryogels as robust biomaterials with stability and durability under repetitive loading. © 2024, The Authors. All rights reserved.

关键词： Cyclic loads

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Rapid Energy Consumption Modelling for CNC Based Milling Process

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Procedia CIRP 2024年 130卷 1764-1769页

作者： Wen-Tse Hsu Pang-Hsiang Hung Bing-He Chou Po-Han Chen Shang-Yu Lin Tay-Jyi Lin Yuh-Chung Hu Pei-Zen Chang Wei-Chang Li Institute of Applied Mechanics National Taiwan University No. 1 Sec 4 Roosevelt Rd. Taipei 106319 Taiwan Computer Science and Information Engineering National Chung Cheng University 168 University Rd. Chiayi 621301 Taiwan Department of Mechanical and Electro-Mechanical Engineering National Ilan University No. 1 Sec. 1 Shen-Lung Rd. Yilan 260 Taiwan

This study introduces a methodology for rapidly establishing an energy consumption model based on NC code for CNC milling operations. The approach significantly reduces the time needed to gather training and validation data through two key techniques: (1) magnetic voltage sensors, facilitating direct installation onto electrical joints within the electrical box without the need for modifications to the machine tool electricity, and (2) a greatly reduced amount of cutting experiments required for collecting the training data based on a modified Taguchi method. The power consumption measurements are divided into two parts: (1) experiments conducted at varying spindle speeds and feed rates without cutting, and (2) cutting experiments conducted at varying spindle speeds, feed rates, depth of cut, and width of cut. The combinations of cutting parameters are significantly reduced based on the nature of the dependency of the parameters to the energy consumption, and using the Taguchi method and the cross-validation approach. The overall time required for obtaining the power consumption model is around 30 minutes, including 15 minutes estimated for electrical sensors installation. The methodology is applied to 10 distinct machine tools, demonstrating the versatility and applicability of the modeling process across diverse machining environments. The achieved error rate of up to 3.98% underscores the efficacy of this approach. Furthermore, the energy consumption data gleaned from these 10 machine tools are made readily available for open-source utilization, fostering accessibility and collaborative research in energy-efficient CNC milling processes.

关键词： CNC milling CNC machining energy model cutting power consumption power consumption model

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A Beginner’s Guide to Homological Algebra: A Comprehensive Introduction for Students

arXiv

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arXiv 2022年

作者： Eskenazi, Andy You, Kevin Vauclain, Will Murugadoss, Robin Department of Mathematics University of Pennsylvania United States Department of Mechanical Engineering and Applied Mechanics University of Pennsylvania United States Department of Computer and Information Science University of Pennsylvania United States

Homological algebra is often understood as the translator between the world of topology and algebra. However, this branch of mathematics is worth studying by itself, given that it provides fascinating perspectives about other disciplines, most notably, category theory. In this paper, we seek to provide an introductory guide for advanced students of mathematics and related specialties seeking to get started on homological algebra, covering the necessary central topics to later delve deeper into more complex aspects of this field and beyond. This work starts by presenting the notion of chain complexes of algebraic structures, and then moves into exploring homology modules and chain homotopies. Next, we provide an overview of projective resolutions and conclude by entering the world of category theory by looking at Tor functors. © 2022, CC BY.

关键词： Algebra

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Semi-Markov Telecommunication Networks Model

Semi-Markov Telecommunication Networks Model

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International Conference on Actual Problems of Electron Devices engineering, (APEDE)

作者： Mikhail S. Svetlov Alexey A. L’vov Arman M. Martirosyan David M. Martirosyan Igor S. Bagaev Semen T. Khasanov Laboratory of Control and Automation Problems in Mechanical Engineering Institute of Precision Mechanics and Control of RAS Saratov Russian Federation Institute of Institute of Electronic Engineering and Instrumentation Yuri Gagarin State Technical University of Saratov Saratov Russian Federation Institute of Applied Information Technologies and Communications Yuri Gagarin State Technical University of Saratov Saratov Russian Federation Phystech-School of Applied Mathematics and Computer Science Moscow Institute of Physics and Technology Moscow Russian Federation

ISBN: (数字)9798350393316

ISBN: (纸本)9798350393323

关键词： Adaptation models Costs Noise information security Bandwidth Organizations Communications technology Telecommunication network reliability Adaptive control Electron devices

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Technology Roadmap for Flexible Sensors

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ACS NANO 2023年第6期17卷 5211-5295页

作者： Luo, Yifei Abidian, Mohammad Reza Ahn, Jong-Hyun Akinwande, Deji Andrews, Anne M. Antonietti, Markus Bao, Zhenan Berggren, Magnus Berkey, Christopher A. Bettinger, Christopher John Chen, Jun Chen, Peng Cheng, Wenlong Cheng, Xu Choi, Seon-Jin Chortos, Alex Dagdeviren, Canan Dauskardt, Reinhold H. Di, Chong-an Dickey, Michael D. Duan, Xiangfeng Facchetti, Antonio Fan, Zhiyong Fang, Yin Feng, Jianyou Feng, Xue Gao, Huajian Gao, Wei Gong, Xiwen Guo, Chuan Fei Guo, Xiaojun Hartel, Martin C. He, Zihan Ho, John S. Hu, Youfan Huang, Qiyao Huang, Yu Huo, Fengwei Hussain, Muhammad M. Javey, Ali Jeong, Unyong Jiang, Chen Jiang, Xingyu Kang, Jiheong Karnaushenko, Daniil Khademhosseini, Ali Kim, Dae-Hyeong Kim, Il-Doo Kireev, Dmitry Kong, Lingxuan Lee, Chengkuo Lee, Nae-Eung Lee, Pooi See Lee, Tae-Woo Li, Fengyu Li, Jinxing Liang, Cuiyuan Lim, Chwee Teck Lin, Yuanjing Lipomi, Darren J. Liu, Jia Liu, Kai Liu, Nan Liu, Ren Liu, Yuxin Liu, Yuxuan Liu, Zhiyuan Liu, Zhuangjian Loh, Xian Jun Lu, Nanshu Lv, Zhisheng Magdassi, Shlomo Malliaras, George G. Matsuhisa, Naoji Nathan, Arokia Niu, Simiao Pan, Jieming Pang, Changhyun Pei, Qibing Peng, Huisheng Qi, Dianpeng Ren, Huaying Rogers, John A. Rowe, Aaron Schmidt, Oliver G. Sekitani, Tsuyoshi Seo, Dae-Gyo Shen, Guozhen Sheng, Xing Shi, Qiongfeng Someya, Takao Song, Yanlin Stavrinidou, Eleni Su, Meng Sun, Xuemei Takei, Kuniharu Tao, Xiao-Ming Tee, Benjamin C. K. Thean, Aaron Voon-Yew Trung, Tran Quang Wan, Changjin Wang, Huiliang Wang, Joseph Wang, Ming Wang, Sihong Wang, Ting Wang, Zhong Lin Weiss, Paul S. Wen, Hanqi Xu, Sheng Xu, Tailin Yan, Hongping Yan, Xuzhou Yang, Hui Yang, Le Yang, Shuaijian Yin, Lan Yu, Cunjiang Yu, Guihua Yu, Jing Yu, Shu-Hong Yu, Xinge Zamburg, Evgeny Zhang, Haixia Zhang, Xiangyu Zhang, Xiaosheng Zhang, Xueji Zhang, Yihui Zhang, Yu Zhao, Siyuan Zhao, Xuanhe Zheng, Yuanjin Zheng, Yu-Qing Zheng, Zijian Zhou, Tao Zhu, Bowen Zhu, Ming Zhu, Rong Zhu, Yangzhi Zhu, Yong Zou, Guijin Chen, Xiaodong 08-03 Innovis Singapore 138634 Republic of Singapore Innovative Centre for Flexible Devices (iFLEX) School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore Department of Biomedical Engineering University of Houston Houston Texas 77024 United States School of Electrical and Electronic Engineering Yonsei University Seoul 03722 Republic of Korea Department of Electrical and Computer Engineering The University of Texas at Austin Austin Texas 78712 United States Microelectronics Research Center The University of Texas at Austin Austin Texas 78758 United States Department of Chemistry and Biochemistry California NanoSystems Institute and Department of Psychiatry and Biobehavioral Sciences Semel Institute for Neuroscience and Human Behavior and Hatos Center for Neuropharmacology University of California Los Angeles Los Angeles California 90095 United States Colloid Chemistry Department Max Planck Institute of Colloids and Interfaces 14476 Potsdam Germany Department of Chemical Engineering Stanford University Stanford California 94305 United States Laboratory of Organic Electronics Department of Science and Technology Campus Norrköping Linköping University 83 Linköping Sweden Wallenberg Initiative Materials Science for Sustainability (WISE) and Wallenberg Wood Science Center (WWSC) SE-100 44 Stockholm Sweden Department of Materials Science and Engineering Stanford University Stanford California 94301 United States Department of Biomedical Engineering and Department of Materials Science and Engineering Carnegie Mellon University Pittsburgh Pennsylvania 15213 United States Department of Bioengineering University of California Los Angeles Los Angeles California 90095 United States School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University Singapore 637457 Singapore Nanobionics Group Department of Chemical and Biological Engineering Monash University Clayton Australia 3800 Monash

Humans rely increasingly on sensors to address grand challenges and to improve quality of life in the era of digitalization and big data. For ubiquitous sensing, flexible sensors are developed to overcome the limitations of conventional rigid counterparts. Despite rapid advancement in bench-side research over the last decade, the market adoption of flexible sensors remains limited. To ease and to expedite their deployment, here, we identify bottlenecks hindering the maturation of flexible sensors and propose promising solutions. We first analyze continued...challenges in achieving satisfactory sensing performance for real-world applications and then summarize issues in compatible sensor-biology interfaces, followed by brief discussions on powering and connecting sensor networks. Issues en route to commercialization and for sustainable growth of the sector are also analyzed, highlighting environmental concerns and emphasizing nontechnical issues such as business, regulatory, and ethical considerations. Additionally, we look at future intelligent flexible sensors. In proposing a comprehensive roadmap, we hope to steer research efforts towards common goals and to guide coordinated development strategies from disparate communities. Through such collaborative

关键词： soft materials mechanics engineering flexible electronics conformable sensors bioelectronics human-machine interfaces body area sensor networks technology translation sustainable electronics

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A Tendon-Driven Origami Hopper Triggered by Proprioceptive Contact Detection 3

A Tendon-Driven Origami Hopper Triggered by Proprioceptive C...

引用

3rd IEEE International Conference on Soft Robotics, RoboSoft 2020

作者： Chen, Wei-Hsi Misra, Shivangi Caporale, J. Diego Koditschek, Daniel E. Yang, Shu Sung, Cynthia R. University of Pennsylvania Department of Electrical and Systems Engineering United States University of Pennsylvania Department of Computer and Information Science United States University of Pennsylvania Department of Mechanical Engineering and Applied Mechanics United States University of Pennsylvania Department of Materials Science and Engineering United States

ISBN: (纸本)9781728165707

We report on experiments with a laptop-sized (0.23m, 2.53kg), paper origami robot that exhibits highly dynamic and stable two degree-of-freedom (circular boom) hopping at speeds in excess of 1.5 bl/s (body-lengths per second) at a specific resistance O(1) while achieving aerial phase apex states 25% above the stance height over thousands of cycles. Three conventional brushless DC motors load energy into the folded paper springs through pulley-borne cables whose sudden loss of tension upon touchdown triggers the release of spring potential that accelerates the body back through liftoff to flight with a 20W powerstroke, whereupon the toe angle is adjusted to regulate fore-aft speed. We also demonstrate in the vertical hopping mode the transparency of this actuation scheme by using proprioceptive contact detection with only motor encoder sensing. The combination of actuation and sensing shows potential to lower system complexity for tendon-driven robots. © 2020 IEEE.

关键词： Antennas

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Constrained many-body phases in a 2-Higgs lattice gauge theory

arXiv

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arXiv 2025年

作者： Schuckert, Alexander Kühn, Stefan Smith, Kevin C. Crane, Eleanor Girvin, Steven M. Joint Quantum Institute Joint Center for Quantum Information and Computer Science University of Maryland NIST College ParkMD20742 United States Deutsches Elektronen-Synchrotron DESY Platanenallee 6 Zeuthen15738 Germany Brookhaven National Laboratory UptonNY11973 United States Yale Quantum Institute PO Box 208 334 17 Hillhouse Ave New HavenCT06520-8263 United States Departments of Applied Physics and Physics Yale University New HavenCT06511 United States Departments of Physics and Mechanical Engineering Co-Design Center for Quantum Advantage Massachusetts Institute of Technology CambridgeMA02139 United States

We study the ground-state phase diagram of a one-dimensional Z2 lattice gauge theory coupled to soft-core bosonic matter at unit filling, inspired by the Higgs sector of the standard model. Through a combination of analytical perturbative approaches, exact diagonalization, and density-matrix-renormalization-group simulations, we uncover a rich phase diagram driven by gauge-field-mediated resonant pair hopping and the confinement of single particles. The pair hopping results in a bunching state with superextensive energy and macroscopic particle number fluctuations at strong electric field strengths and weak on-site interactions. The bunching state crosses over into a pair superfluid phase as the on-site interaction increases, characterized by a finite superfluid density and powerlaw-decaying pair correlations. At large on-site interaction strengths and driven by effective interactions induced by the gauge constraint, the superfluid transitions into an incompressible pair Mott insulator phase. At weak field strengths and on-site interactions, we find a plasma-like region, where single bosons exhibit large short-range correlations and the ground state is composed almost equally of states with even and odd local boson occupation. The presence of a bunching state with large number fluctuations, which is difficult to study using classical numerics, motivates experimental realizations in hybrid boson-qubit quantum simulation platforms such as circuit QED, neutral atoms, and trapped ions. Our findings highlight the rich interplay between gauge fields and soft-core bosonic matter. Copyright © 2025, The Authors. All rights reserved.

关键词： Bosons

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Theoretical modeling of tunable vibrations of three-dimensional serpentine structures for simultaneous measurement of adherent cell mass and modulus

引用

MRS Bulletin 2020年

作者： Zhao, Jianzhong Li, Weican Guo, Xingming Wang, Heling Rogers, John A. Huang, Yonggang Shanghai Institute of Applied Mathematics and Mechanics Shanghai Key Laboratory of Mechanics in Energy Engineering School of Mechanics and Engineering Science Shanghai University China Departments of Civil and Environmental Engineering Mechanical Engineering and Materials Science and Engineering Northwestern University Illinois United States School of Engineering Brown University Rhode Island United States Shanghai Institute of Applied Mathematics and Mechanics Shanghai Key Laboratory of Mechanics in Energy Engineering School of Mechanics and Engineering Science Shanghai University China Departments of Civil and Environmental Engineering Mechanical Engineering and Materials Science and Engineering Northwestern University Illinois United States Departments of Materials Science and Engineering Biomedical Engineering Chemistry Mechanical Engineering Electrical Engineering and Computer Science and Neurological Surgery Northwestern University Illinois United States Querrey-Simpson Institute for Bioelectronics Northwestern University Illinois United States Departments of Civil and Environmental Engineering Mechanical Engineering and Materials Science and Engineering Northwestern University Illinois United States Querrey-Simpson Institute for Bioelectronics Northwestern University Illinois United States

Vibration-based methods can be used effectively to characterize the physical properties of biological materials, with an increasing interest focused on the mechanics of individual, living cells. Real-time measurements of cell properties, such as mass and Young's modulus, can yield important insights into many aspects of cell growth and metabolism as well as the interaction of cells with external stimuli (e.g., drugs). Vibrational test structures designed for the study of such cell properties often use fixed configurations and operational modes, with associated limitations in determining multiple characteristics of the cell, simultaneously. Recent development of mechanics-guided techniques for deterministic assembly of three-dimensional (3D) microstructures provides a route to vibrational frameworks that offer tunable configurations, vibration modes, and resonant frequencies. Here we propose a method that exploits such tunable vibrational structures to simultaneously determine the mass and modulus of a single adherent cell, or of other biological materials or small-scale living systems (e.g., organoids), through theoretical modeling and finite element analysis. The idea involves a 3D architecture that supports two different vibrational structures and can be converted from one to the other through application of strain to an elastomeric substrate. Specifically, tailored designs for serpentine ribbons in these systems enable a decoupling of the dependence of the resonant frequencies of the two structures to the cell mass and modulus, with an associated ability to measure these two properties accurately and independently. These same concepts can be scaled to apply to various types of cells, as well as to organoids (3D clusters of cells) and other biological materials with small geometries, across a range of values of mass and modulus. This method could serve as the foundation for microelectromechanical systems capable of monitoring mass and modulus in real time for use

关键词： Serpentine

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