检索结果-内蒙古大学图书馆

IEEE International Symposium on Electromagnetic Compatibility (EMC)

作者： Dandan Zhang Steven Mamolo Kanat Anurakparaorn Yiheng Xiao Eric Michielssen Alan I. Taub Department of Materials Science and Engineering University of Michigan Ann Arbor MI USA Department of Aerospace Engineering University of Michigan Ann Arbor MI USA Department of Industrial Engineering King Mongkut’s Institute of Technology Ladkrabang Bangkok Thailand Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor MI USA Department of Mechanical Engineering University of Michigan Ann Arbor MI USA

ISBN: (数字)9798350360394

ISBN: (纸本)9798350360400

Computational modeling and optimization were utilized to design the metastructure of a polymer nanocomposite system. The goal is to minimize the reflection loss (RL) and broaden the absorption bandwidth. Truncated cones with a perfect electric conductor on the top surface were chosen. With this innovative metastructure, the absorption bandwidth of RL at -20dB has been increased from 0, as observed in non-porous materials, to 1.83 GHz. The samples with optimized metastructures were manufactured using hot pressing and computer numerical control (CNC) machining techniques. This approach provided an efficient way to design and precisely manufacture materials with targeted EM absorption.

关键词： Absorption Computational modeling Bandwidth Pressing Machining Conductors Reflection Polymers computer numerical control Optimization

来源：评论

学校读者我要写书评

暂无评论

Multiscale Numerical Modeling for Near-Field Microwave Impedance Microscopy

Multiscale Numerical Modeling for Near-Field Microwave Imped...

引用

CLEO: science and Innovations, S and I 2022

作者： Tami, Diego Ohlberg, Douglas A.A. Ramirez, Jhonattan C. do Rego, Cássio Gonçalves Medeiros-Ribeiro, Gilberto Graduate Program in Electrical Engineering Universidade Federal de Minas Gerais Brazil Microscopy Center Universidade Federal de Minas Gerais Brazil Department of Electronic Engineering Universidade Federal de Minas Gerais Brazil Computer Science Department Universidade Federal de Minas Gerais Brazil

In this work, we analyzed numerically a multiscale nanosystem based on sMIM on TBG. Spontaneous formation of a water-meniscus by the approximation between the tip-sample concentrates the microwave fields, reaching res...

ISBN: (纸本)9781557528209

关键词：

来源：评论

学校读者我要写书评

暂无评论

Predicting the Parabolic Growth Rate Constant for High-Temperature Oxidation of Steels Using Machine Learning Models

SSRN

引用

SSRN 2023年

作者： Aghaeian, Soroush Nourouzi, Farshid Sloof, Wim G. Mol, Arjan J.M.C. Böttger, Amarante J. Department of Materials Science and Engineering Faculty of Mechanical Maritime and Materials Delft University of Technology Mekelweg 2 Delft2628 CD Netherlands Department of Electrical Sustainable Energy Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technology Mekelweg 4 Delft2628 CD Netherlands

Predicting the high-temperature oxidation kinetics of different steel grades is a complex challenge that has not been fully addressed yet. In this work, a data analytics approach is presented to predict the parabolic growth rate constant (kp) of high-temperature oxidation of steels using published data. Experimental data are collected for more than 70 different steel grades exposed to temperatures between 500 and 1200 C in air. © 2023, The Authors. All rights reserved.

关键词： Forecasting

来源：评论

学校读者我要写书评

暂无评论

Investigation of Partially Oxidized Cu Capping Effect on CoFeB/Pt/CuOx Multilayers by electrical and Optical Methods

Investigation of Partially Oxidized Cu Capping Effect on CoF...

引用

Magnetic Conference - Short Papers (INTERMAG Short Papers), IEEE International

作者： Yuteng Ma Nan Zhang Hang Xie Lin Ke Yihong Wu Department of Electrical and Computer Engineering National University of Singapore Singapore Singapore National University of Singapore (Chong Qing) Research Institute Chongqing China Institute of Materials Research and Engineering Agency for Science Technology and Research Singapore Singapore

ISBN: (数字)9798350362213

ISBN: (纸本)9798350362220

Orbital Hall effect in light metals has attracted attentions recently, but research on the orbital Rashba-Edelstein effect and its inverse effect is relatively limited. In this study, we experimentally demonstrate the existence of both effects in CoFeB/Pt/CuOx multilayers. By conducting spin Hall magnetoresistance (SMR) and anisotropic magneto resistance (AMR) measurements simultaneously and calculating the ratio between them, we rule out the current shunt effect and conclude the surface oxidized Cu film contributes to the generation of orbital Hall currents, and these orbital Hall currents exhibit the same polarization as the spin currents generated by Pt. Our argument is further substantiated by the THz emission measurements which show that the effective spin diffusion length in Pt increases from 3.57 nm to 4.37 nm with the addition of CuOx. Our work provides further evidence to the hypothesis of interface related charge-orbital interconversion.

关键词： Magnetic multilayers Stimulated emission Current measurement Surface resistance Length measurement Nonhomogeneous media Extraterrestrial measurements

来源：评论

学校读者我要写书评

暂无评论

materials Design for Charge-programmed Additive Manufacturing of Antennas

Materials Design for Charge-Programmed Additive Manufacturin...

引用

Antennas and Propagation Society International Symposium

作者： Zhen Wang Zhenpeng Xu Junbo Wang Ryan Hensleigh Yahya Rahmat-Samii Xiaoyu Rayne Zheng Department of Materials Science & Engineering University of California Berkeley CA USA Department of Civil and Environmental Engineering University of California Los Angeles CA USA Department of Electrical and Computer Engineering University of California Los Angeles CA USA

Antennas fabricated with traditional manufacturing methods typically carry redundant weight and are limited in 3D architecture complexity. Current additive manufacturing (AM) methods also lacks the capability to construct antennas with multiple materials. The charge-programmed multi-material AM process demonstrated in this work allows the design and manufacturing of antennas with previously unattainable mechanical properties. In this paper, we discuss the principles behind the multi-material printing and the versatility of the selective metal deposition process. We also introduce the material designs that enables the variation of material property, which makes it possible to print both stiff and flexible antennas.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Subwavelength-Engineered Antislot Photonic Crystals in a Silicon Photonics Foundry for On-chip Communications

Subwavelength-Engineered Antislot Photonic Crystals in a Sil...

引用

Conference on Lasers and Electro-Optics (CLEO)

作者： Kellen P. Arnold Joshua A. Allen Sami I. Halimi Landen D. Ryder Francis O. Afzal Yusheng Bian Abdelsalam Aboketaf Takako Hirokawa Kevin Dezfulian Michal Rakowski Rod Augur Karen Nummy Sharon M. Weiss Interdisciplinary Materials Science Program Vanderbilt University Nashville TN USA Department of Electrical and Computer Engineering Vanderbilt University Nashville TN USA NASA Goddard Space Flight Center Greenbelt MD US GlobalFoundries Malta NY USA

We report scalable foundry fabrication and characterization of photonic crystal nanobeam waveguides incorporating subwavelength-scale dielectric antislot unit cells. This work enables enhanced light-matter interaction... 详细信息

ISBN: (纸本)9798350369311

关键词： Mach-Zehnder interferometers Optical device fabrication Photonic crystals Waveguide lasers Lasers and electrooptics Electro-optic modulators Silicon photonics Foundries System-on-chip Electro-optical waveguides

来源：评论

学校读者我要写书评

暂无评论

On the Reliability of High-Performance Dual Gate (DG) W-Doped In2O3 FET

On the Reliability of High-Performance Dual Gate (DG) W-Dope...

引用

Symposium on VLSI Technology

作者： Khandker Akif Aabrar Hyeonwoo Park Sharadindu G. Kirtania Eknath Sarkar Md Abdullah Al Mamun Sunbin Deng Chengyang Zhang Gilbert B. Rayner Kyeongjae Cho Suman Datta School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta Georgia USA Department of Materials Science and Engineering University of Texas at Dallas Richardson TX USA Kurt J. Lesker Company Jefferson Hills Pennsylvania

ISBN: (数字)9798350361469

ISBN: (纸本)9798350361476

We demonstrate a high performance back-end-of-line (BEOL) compatible tungsten (W)-doped In 2 O 3 channel (IWO) dual gate (DG) field-effect transistor (FET) with ultra low-leakage current $<10^{-15}\ \ \mathrm{A}/\mu \mathrm{m}$ and high $\mathrm{I}_{\text{ON}}/\mathrm{I}_{\text{OFF}}$ ratio of $5.8\times 10^{11}$ at 2.5V overdrive $(\mathrm{V}_{\text{ov}})$ . In addition, the IWO DG FET demonstrates a record low negative bias temperature instability (NBTI) of 7.2mV, record low hot carrier degradation (HCD) of 63mV and a low positive bias temperature instability (PBTI) of 85mV at 1V $\mathrm{V}_{\text{ov}}$ which makes IWO DG FET a potential candidate for realizing high density embedded-DRAM for last-level cache (LLC). Furthermore, we develop a comprehensive modeling framework for assesing the reliability of amorphous oxide semiconductor (AOS) channel FETs which can provide insights into the threshold voltage $(\mathrm{V}_{\mathrm{T}})$ instability mechanisms and help design appropriate mitigation strategies.

关键词： Negative bias temperature instability Electron traps Thermal variables control Prevention and mitigation Impurities Field effect transistors Ionization

来源：评论

学校读者我要写书评

暂无评论

Onboard Rooftop Solar Charging for Green Transportation in tourism sector

Onboard Rooftop Solar Charging for Green Transportation in t...

引用

Renewable Energy and Hydrogen Technologies (GlobConHT), IEEE IAS Global Conference on

作者： Moumita Pramanik Hiranmay Samanta Sudipta Basu Pal Konika Das Bhattacharya Chandan Kumar Chanda Hiranmay Saha Department of Electrical Engineering(EE) Indian Institute of Engineering Science and Technology (IIEST) Shibpur Howrah India Green Energy and Sensor Systems(SAMGESS) School of Advanced Materials Indian Institute of Engineering Science and Technology(IIEST) Shibpur Howrah India Department of Computer Science Technology and Computer Science Information Technology Engineering University of Engineering and Management(UEM) Kolkata Kolkata India

The need for energy conservation and environmental protection have triggered the development and deployment of electric vehicles. Light electric vehicles and fossil fuel based light vehicles are popular means of transport for short distances in not only remote rural areas but also in places of tourist attractions. For Islands in the tropical belt like the Sunderbans in India and other pristine sea beaches in South East Asia where nature is luxuriantly present, green transportation is proposed in this work. The objective is to develop environment friendly transport for these natural havens and islands that have ample renewable resources especially in the form of solar power. In this work, a model of a light electric vehicle is developed that utilizes the solar energy during the daytime for charging its batteries. Battery charge controller inbuilt with boost based MPPT (Maximum Power Point Tracking) of solar irradiation have especially been designed to meet the requirements. The efficiency of the designed MPPT is studied. As accumulation of dust and sand reduces the solar module efficiency, an automated self-cleaning mechanism has also been designed that automatically cleans the solar panel regularly. The life cycle cost and the reduction in carbon emissions coupled with the Cost of Capital Investment and operating expenses of the developed model of green transportation far outweighs the similar values obtained from other modes of remote transportation.

关键词： Maximum power point trackers Renewable energy sources Radiation effects Costs Solar energy Fossil fuels Green transportation

来源：评论

学校读者我要写书评

暂无评论

Multi-fidelity Bayesian optimization with multiple information sources of input-dependent fidelity 24

Multi-fidelity Bayesian optimization with multiple informati...

引用

Proceedings of the Fortieth Conference on Uncertainty in Artificial Intelligence

作者： Mingzhou Fan Byung-Jun Yoon Edward Dougherty Nathan Urban Francis Alexander Raymundo Arróyave Xiaoning Qian Department of Electrical & Computer Engineering Texas A&M University College Station Texas Department of Electrical & Computer Engineering Texas A&M University College Station Texas and Computational Science Initiative Brookhaven National Laboratory Upton New York Computational Science Initiative Brookhaven National Laboratory Upton New York Argonne National Laboratory Lemont Illinois Department of Materials Science & Engineering Texas A&M University College Station Texas and Department of Mechanical Engineering Texas A&M University College Station Texas Department of Electrical & Computer Engineering Texas A&M University College Station Texas and Computational Science Initiative Brookhaven National Laboratory Upton New York and Department of Computer Science & Engineering Texas A&M University College Station Texas

By querying approximate surrogate models of different fidelity as available information sources, Multi-Fidelity Bayesian Optimization (MFBO) aims at optimizing unknown functions that are costly if not infeasible to evaluate. Existing MFBO methods often assume that approximate surrogates have consistently high/low fidelity across the input domain. However, approximate evaluations from the same surrogate can have different fidelity at different input regions due to data availability and model constraints, especially when considering machine learning surrogates. In this work, we investigate MFBO when multi-fidelity approximations have input-dependent fidelity. By explicitly capturing input dependency for multi-fidelity queries in Gaussian Process (GP), our new input-dependent MFBO (iMFBO) with learnable noise models better captures the fidelity of each information source in an intuitive way. We further design a new acquisition function for iMFBO and prove that the queries selected by iMFBO have higher quality than those by naive MFBO methods, with the derived sub-linear regret bound. Experiments on both synthetic and real-world data demonstrate its superior empirical performance.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Realization of high aspect ratio metalenses by facile nanoimprint lithography using water-soluble stamps

引用

PhotoniX 2023年第1期4卷 382-392页

作者： Hojung Choi Joohoon Kim Wonjoong Kim Junhwa Seong Chanwoong Park Minseok Choi Nakhyun Kim Jisung Ha Cheng-Wei Qiu Junsuk Rho Heon Lee Department of Materials Science and Engineering Korea UniversitySeoul 02841Republic of Korea Department of Mechanical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics Pohang 37673Republic of Korea National Institute of Nanomaterials Technology(NINT) Pohang 37673Republic of Korea ZERC Seoul 02841Republic of Korea

Nanoimprint lithography(NIL)has attracted attention recently as a promising fabrication method for dielectric metalenses owing to its low cost and high throughput,however,high aspect ratio(HAR)nanostructures are required to manipulate the full 2πphase of *** NIL using a hard-polydimethylsiloxane(h-PDMS)mold inevitably incurs shear stress on the nanostructures which is inversely proportional to the surface area parallel to the direction of ***,HAR structures are subjected to larger shear stresses,causing structural ***,we propose a novel wet etching NIL method with no detachment process to fabricate flawless HAR *** water-soluble replica mold is fabricated with polyvinyl alcohol(PVA)which is simpler than an h-PDMS mold,and the flexibility of the PVA mold is suitable for direct printing as its high tensile modulus allows high-resolution patterning of HAR *** diffraction-limited focusing of the printed metalenses demonstrates that it operates as an ideal lens in the visible *** method can potentially be used for manufacturing various nanophotonic devices that require HAR nanostructures at low cost and high throughput,facilitating commercialization.

关键词： Nanoimprint lithography Wet etching Polyvinyl alcohol High fidelity nanofabrication High aspect ratio nanostructure Metalens

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：