检索结果-内蒙古大学图书馆

Reducing Effective System Dimensionality with Long-Range Collective Dipole-Dipole Interactions

Physical Review Letters 2024年第17期132卷 173803-173803页

作者： Ashwin K. Boddeti Yi Wang Xitlali G. Juarez Alexandra Boltasseva Teri W. Odom Vladimir Shalaev Hadiseh Alaeian Zubin Jacob Elmore Family School of Electrical and Computer Engineering Purdue University West Lafayette Indiana 47907 USA Birck Nanotechnology Center Purdue University West Lafayette Indiana 47907 USA Graduate Program in Applied Physics Northwestern University Evanston Illinois 60208 USA Department of Materials Science and Engineering Northwestern University Evanston Illinois 60208 USA Department of Chemistry Northwestern University Evanston Illinois 60208 USA School of Physics and Astronomy Purdue University West Lafayette Indiana 47907 USA

Dimensionality plays a crucial role in long-range dipole-dipole interactions (DDIs). We demonstrate that a resonant nanophotonic structure modifies the apparent dimensionality in an interacting ensemble of emitters, as revealed by population decay dynamics. Our measurements on a dense ensemble of interacting quantum emitters in a resonant nanophotonic structure with long-range DDIs reveal an effective dimensionality reduction to d¯=2.20(12), despite the emitters being distributed in 3D. This contrasts with the homogeneous environment, where the apparent dimension is d¯=3.00. Our work presents a promising avenue to manipulate dimensionality in an ensemble of interacting emitters.

关键词： Light-matter interaction Long-range interactions Metamaterials Optics & lasers Photonics Plasmonics Quantum optics

来源：评论

学校读者我要写书评

暂无评论

Elucidating the Role of the His-Purkinje System During Long QT Mediated Arrhythmias

Elucidating the Role of the His-Purkinje System During Long ...

引用

Annual Modeling and Simulation Conference (ANNSIM)

作者： Anthony Owusu-Mensah Omer Berenfeld Michel Audette Department of Electrical and Computer Engineering Old Dominion University Norfolk USA Center for Arrhythmia Research Internal Medicine Biomedical Engineering and Applied Physics University of Michigan Ann Arbor USA

Long QT type 2 (LQT2) is a cardiac disorder caused by mutations in the hERG gene, which can lead to life-threatening arrhythmias. However, the exact involvement of the His-Purkinje System (HPS) in LQT2-mediated arrhythmias remains elusive. We utilized a computational model of the rabbit ventricles integrated with HPS to investigate the role of HPS in LQT2-mediated arrhythmia. We induced persistent reentry from an ectopic stimulus and isolated the HPS at different time points following the induction of reentry to determine its involvement in reentry dynamics. The earliest termination time for reentry coincided with the earliest time the HPS was isolated, indicating direct involvement of HPS in LQT2-mediated ventricular arrhythmia. Additionally, altering the HPS junctional parameters, such as coupling resistance or the number of myocytes at the Purkinje-Myocardial Junctions, affected reentry dynamics. Our multi-scale computer modeling outcomes offer important new understandings of probable arrhythmia mechanisms under LQT2 circumstances.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Light-driven single-cell rotational adhesion frequency assay

引用

eLight 2022年第1期2卷 154-164页

作者： Yaoran Liu Hongru Ding Jingang Li Xin Lou Mingcheng Yang Yuebing Zheng Department of Electrical and Computer Engineering The University of Texas at AustinAustinTX 78712USA Walker Department of Mechanical Engineering The University of Texas at AustinAustinTX 78712USA Materials Science&Engineering Program and Texas Materials Institute The University of Texas at AustinAustinTX 78712USA School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Beijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808GuangdongChina Department of Biomedical Engineering The University of Texas at AustinAustinTX 78712USA

The interaction between cell surface receptors and extracellular ligands is highly related to many physiological processes in living *** techniques have been developed to measure the ligand-receptor binding kinetics at the single-cell ***,few techniques can measure the physiologically relevant shear binding affinity over a single cell in the clinical ***,we develop a new optical technique,termed single-cell rotational adhesion frequency assay(scRAFA),that mimics in vivo cell adhesion to achieve label-free determination of both homogeneous and heterogeneous binding kinetics of targeted cells at the subcellular ***,the scRAFA is also applicable to analyze the binding affinities on a single cell in native human *** its superior performance and general applicability,scRAFA is expected to find applications in study of the spatial organization of cell surface receptors and diagnosis of infectious diseases.

关键词： diagnosis kinetics rotational

来源：评论

学校读者我要写书评

暂无评论

A new integrated machine learning framework for advanced photoemission 23

A new integrated machine learning framework for advanced pho...

引用

Laser Beam Shaping XXIII 2023

作者： Zhang, Hao Hirschman, Jack Lemons, Randy Sun, Linshan Lu, Brittany Carbajo, Sergio Department of Electrical and Computer Engineering University of California 420 Westwood Los AngelesCA90095 United States SLAC National Accelerator Laboratory 2575 Sand Hill Rd Menlo ParkCA94025 United States Department of Applied Physics Stanford University 348 Via Pueblo StanfordCA94305 United States Physics and Astronomy Department UCLA 475 Portola Plaza Los AngelesCA90095 United States

ISBN: (纸本)9781510665484

The next generation of ultra-bright photoemission sources may offer opportunities to enhance our understanding of fundamental spatiotemporal scales. However, modeling photoemission and laser shaping systems precisely and efficiently is difficult due to the numerous interdependent linear and nonlinear processes involved and significant variations in modeling frameworks. Here, we present a new machine learning-based framework for photoemission laser systems and dynamic laser shaping. To showcase the effectiveness of our approach in system optimization, reverse engineering, and design. Our framework is designed to facilitate precise adaptive temporal shaping, including the generation of longitudinally flat-top or periodically-modulated pulses, through integration with four-wave mixing. © 2023 SPIE.

关键词： Photoemission

来源：评论

学校读者我要写书评

暂无评论

A Square Patch Partially Reflective Surface for Improving the Antenna Gain Characteristic of Low-Cost Dual Polarized Microstrip Antenna

A Square Patch Partially Reflective Surface for Improving th...

引用

2022 Research, Invention, and Innovation Congress: Innovative electricals and Electronics, RI2C 2022

作者： Chudpooti, Sukanya Sangpet, Patchadaporn Chudpooti, Nonchanutt Sathitanon, Nontakorn Somjit, Nutapong Akkaraekthalin, Prayoot King Mongkut's University of Technology North Bangkok Facutly of Appied Science Department of Industrial Physics and Medical Instrumentation Bangkok Thailand Faculty of Engineering King Mongkut's University of Technology North Bangkok Department of Electrical and Computer Engineering Bangkok Thailand King Mongkut's University of Technology North Bangkok Faculty of Applied Science Department of Computer and Information Sciences Bangkok Thailand University of Leeds School of Electronic and Electrical Engineering Leeds United Kingdom

ISBN: (数字)9781665473248

ISBN: (纸本)9781665473248

This paper presents an improvement gain of a dual-polarized microstrip patch antenna by using the partially reflective surface (PRS). The PRS is designed from a 10 × 10 array patches structure, which is patterned on a 0.8-mm FR-4 substrate. A-dual-port fed by two SMA connectors, which is selected to use as the source of an experiment. The square metallic patch is used to design the PRS layer. The dimension of the square patch is 5 mm × 5 mm. The length of the square patch is varied from 3.0mm to 4.5 mm by step of 0.5 mm to investigate the reflection coefficients, e.g., magnitude response and phase response. Based on the simulated results, a 4.5-mm square patch provides the highest reflection coefficient of 0.53. To prove the design concept, the size of a square patch of 4.5 mm is selected to fabricate and measure the radiation pattern. At an operating frequency of 3.5 GHz, the maximum gain at the zero degrees is increased from 1.2 dBi to 4.96 dBi when compared without and with PRS. © 2022 IEEE.

关键词： Reflection

来源：评论

学校读者我要写书评

暂无评论

A Chip-Based, 1 Hz Integrated Linewidth Laser

A Chip-Based, 1 Hz Integrated Linewidth Laser

引用

CLEO: Science and Innovations, S and I 2022

作者： Guo, Joel McLemore, Charles A. Xiang, Chao Lee, Dahyeon Wu, Lue Jin, Warren Kelleher, Megan Jin, Naijun Mason, David Chang, Lin Feshali, Avi Paniccia, Mario Rakich, Peter T. Vahala, Kerry J. Diddams, Scott A. Quinlan, Franklyn Bowers, John E. Department of Electrical and Computer Engineering University of California Santa BarbaraCA93106 United States National Institute of Standards and Technology BoulderCO80305 United States Department of Physics University of Colorado BoulderCO80309 United States T. J. Watson Laboratory of Applied Physics California Institute of Technology PasadenaCA91125 United States Department of Applied Physics Yale University New HavenCT06520 United States Anello Photonics Santa ClaraCA United States Department of Electrical Computer and Energy Engineering University of Colorado BoulderCO80309 United States

We demonstrate a chip-scale laser stabilized to an 8 mL micro-fabricated vacuum-gap cavity, exhibiting 1.1 Hz integrated linewidth, frequency noise down to 10−3 Hz2/Hz at 4 kHz, and Allan deviation below 10−14 to 1 s....

ISBN: (纸本)9781557528209

关键词：

来源：评论

学校读者我要写书评

暂无评论

Opening long-time investigation window of living matter by nonbleaching phase intensity nanoscope: PINE

arXiv

引用

arXiv 2023年

作者： Cui, Guangjie Liu, Yunbo Zu, Di Zhao, Xintao Zhang, Zhijia Kim, Do Young Senaratne, Pramith Fox, Aaron Sept, David Park, Younggeun Lee, Somin Eunice Department of Electrical & Computer Engineering Biomedical Engineering Applied Physics Biointerfaces Institute Macromolecular Science & Engineering University of Michigan United States Department of Biomedical Engineering University of Michigan United States Department of Mechanical Engineering University of Michigan United States

Fundamental to all living organisms and living soft matter are emergent processes in which the reorganization of individual constituents at the nanoscale drives group-level movements and shape changes at the macroscale over time. However, light-induced degradation of fluorophores, photobleaching, is a significant problem in extended live cell imaging in life science, and excellent prior arts of STED, MINSTED, or MINFLUX intentionally apply photobleaching optics for super-resolution, yet lack extended live-cell imaging capability as fluorophores reach an irreversible photobleaching limit. Here, we report an innovative way of opening a long-time investigation window of living matter by a nonbleaching phase intensity nanoscope: PINE. We accomplish phase-intensity separation to obtain phase differences between electric field components, such that nanoprobes within a diffraction limited region are distinguished from one another by an integrated phase-intensity multilayer thin film (polyvinyl alcohol/liquid crystal). We obtain distributional patterns of precisely localized nanoprobes to overcome a physical limit to resolve sub-10 nm cellular architectures, and achieve the first dynamic imaging of nanoscopic reorganization over 250 hours using nonbleaching PINE. Since PINE allows a long-time investigation window, we discover nanoscopic rearrangements synchronized with the emergence of group-level movements and shape changes at the macroscale according to a set of interaction rules. We believe that PINE and its application presented here provide a mechanistic understanding of emergent dynamics important in cellular and soft matter reorganization, self-organization, and pattern formation. Copyright © 2023, The Authors. All rights reserved.

关键词： Fluorophores

来源：评论

学校读者我要写书评

暂无评论

Vacuum Ultraviolet Light-Generating Metalens

Vacuum Ultraviolet Light-Generating Metalens

引用

2022 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2022

作者： Tseng, Ming Lun Semmlinger, Michael Zhang, Ming Arndt, Catherine Huang, Tzu-Ting Yang, Jian Kuo, Hsin Yu Su, Vin-Cent Chen, Mu Ku Chu, Cheng Hung Cerjan, Benjamin Tsai, Din Ping Nordlander, Peter Halas, Naomi J. Institute of Electronics National Yang Ming Chiao Tung University Hsinchu300 Taiwan Research Center for Applied Sciences Academia Sinica Taipei115 Taiwan Department of Electrical and Computer Engineering Rice University HoustonTX77005 United States Laboratory for Nanophotonics Rice University HoustonTX77005 United States Applied Physics Graduate Program Rice University HoustonTX77005 United States Department of Physics and Astronomy Rice University HoustonTX77005 United States Department of Physics National Taiwan University Taipei10617 Taiwan Department of Electrical Engineering National United University Miaoli36003 Taiwan Department of Electrical Engineering City University of Hong Kong Kowloon Hong Kong Department of Chemistry Rice University HoustonTX77005 United States

Vacuum ultraviolet (VUV) light is of great importance to many applications such as photochemistry and nanolithography. In this talk, a nonlinear metalens composed of ZnO nanoantennas for VUV generation and focusing wi...

ISBN: (纸本)9798350350012

关键词：

来源：评论

学校读者我要写书评

暂无评论

Vacuum Ultraviolet Light-Generating Metalens

Vacuum Ultraviolet Light-Generating Metalens

引用

2022 International Conference on Optics-Photonics Design and Fabrication, ODF 2022

关键词： Nanoclay

来源：评论

学校读者我要写书评

暂无评论

Setpoint Tracking and Disturbance Attenuation for Gas Pipeline Flow Subject to Uncertainties using Backstepping

arXiv

引用

arXiv 2024年

作者： Rathnayake, Bhathiya Zlotnik, Anatoly Tokareva, Svetlana Diagne, Mamadou Department of Electrical and Computer Engineering University of California San Diego United States Applied Mathematics and Plasma Physics Group Los Alamos National Laboratory United States Department of Mechanical and Aerospace Engineering University of California San Diego United States

In this paper, we consider the problem of regulating the outlet pressure of gas flowing through a pipeline subject to uncertain and variable outlet flow. Gas flow through a pipe is modeled using the coupled isothermal Euler equations, with the Darcy-Weisbach friction model used to account for the loss of gas flow momentum. The outlet flow variation is generated by a periodic linear dynamic system, which we use as a model of load fluctuations caused by varying customer demands. We first linearize the nonlinear equations around the equilibrium point and obtain a 2×2 coupled hyperbolic partial differential equation (PDE) system expressed in canonical form. Using an observer-based PDE backstepping controller, we demonstrate that the inlet pressure can be manipulated to regulate the outlet pressure to a setpoint, thus compensating for fluctuations in the outlet flow. Furthermore, we extend the observer-based controller to the case when the outlet flow variation is uncertain within a bounded set. In this case, the controller is also capable of regulating the outlet pressure to a neighborhood of the setpoint by manipulating the inlet pressure, even in the presence of uncertain fluctuations in the outlet flow. We provide numerical simulations to demonstrate the performance of the *** Codes 93C20, 76N25, 93D15 © 2024, CC BY.

关键词： Backstepping

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：