检索结果-内蒙古大学图书馆

arXiv 2024年

作者： Aashna, Pragati Lin, Hong-Lin Cao, Yu Yin, Yuhui Gao, Yuan Mohanraj, Sakthi Sanjeev Zhu, Di Danner, Aaron Department of Electrical and Computer Engineering National University of Singapore 117583 Singapore Department of Material Science and Engineering National University of Singapore 119077 Singapore Institute of Materials Research and Engineering Agency for Science Technology and Research 138634 Singapore

We report experimentally achieving first-ever electric field periodic poling of single crystal barium titanate (BTO, or BaTiO3) thin film on insulator. Owing to the outstanding optical nonlinearities of BTO, this result is a key step towards achieving quasi-phase-matching in BTO. We first grow the BTO thin film on a dysprosium scandate substrate using pulsed laser deposition with a thin layer of strontium ruthenate later serving as the bottom electrode for poling. We present characterization of the BTO thin film using x-ray diffraction and piezo-response force microscopy to clearly demonstrate single crystal, single domain growth of the film which enables the desired periodic poling. To investigate the poling quality, we apply both non-destructive piezo force response microscopy and destructive etching-assisted scanning electron microscopy and we show that high quality, uniform and intransient poling with 50 % duty cycle and periods ranging from 2 μm to 10 μm is achieved. The successful realization of periodic poling in BTO thin film unlocks the potential for highly efficient nonlinear processes under quasi-phase-matching that seemed far-fetched with prior polycrystalline BTO thin films which predominantly relied on efficiency-limited random or non-phase matching conditions and is a key step towards integration of BTO photonic devices. Copyright © 2024, The Authors. All rights reserved.

关键词： Thin films

来源：评论

学校读者我要写书评

暂无评论

Gallium Oxide as Photonic Integrated Platforms in the UV-Visible Spectra

Gallium Oxide as Photonic Integrated Platforms in the UV-Vis...

引用

2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Zhou, Jingan Zhao, Xuan Xu, Rui Zhang, Xiang Fu, Kai Li, Tao Xu, Mingfei Luo, Shisong He, Ziyi Robinson, Jacob T. Zhu, Hanyu Ajayan, Pulickel M. Zhang, Xiaodong Zhao, Yuji Department of Electrical and Computer Engineering Rice University HoustonTX77005 United States Applied Physics Graduate Program Smalley-Curl Institute Rice University HoustonTX77005 United States Department of Materials Science and NanoEngineering Rice University HoustonTX77005 United States School of Electrical Computer and Energy Engineering Arizona State University TempeAZ85287 United States Nanofabrication facility Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Jiangsu Suzhou215123 China

We report the Ga2O3 as photonic integrated platforms and its nonlinear optical effects in the UV-visible spectra. A low propagation loss of 3.7 dB/cm and second-order susceptibility of x(2)=4.89xl03pm/V were obtained.... 详细信息

ISBN: (纸本)9781957171258

关键词： Gallium compounds

来源：评论

学校读者我要写书评

暂无评论

What is the Q of a Blackbody? A small contribution to Gustav Robert Kirchhoff’s bicentennial

arXiv

引用

arXiv 2024年

作者： Ballato, Arthur Ballato, John Holcombe Department of Electrical and Computer Engineering Clemson University ClemsonSC29634 United States Department of Materials Science and Engineering Clemson University ClemsonSC29634 United States

The blackbody spectrum "half-power points" are used to assign effective Q "quality factor" values that are found to be less than unity whether frequency or wavelength scaling is used. A comparison with values for coherent oscillators is made. This exercise blends two of Kirchhoff’s interests, and is instructive in its own right, as it bridges the often mutually exclusive engineering and scientific disciplines. © 2024, CC BY.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Predicting and Optimizing the Power Performance of Dye-Sensitized Solar Cells Using Machine Learning Techniques

Predicting and Optimizing the Power Performance of Dye-Sensi...

引用

Annual North-American Power Symposium

作者： Deepanjali Chowdhury Leen Al Homoud Khandaker Akramul Haque Katherine Davis Department of Electrical and Computer Engineering Texas A&M University College Station TX United States Department of Materials Science and Engineering Cornell University Ithaca NY United States

ISBN: (数字)9798331521035

ISBN: (纸本)9798331521042

Solar cells hold great potential for the future of energy production. Dye Sensitized Solar Cells (DSSCs) emerge as a promising contender among third-generation solar cells, due to their cost-effectiveness and flexibility. Ongoing experiments aim to further enhance their performance by exploring alternative materials, with a specific emphasis on refining the photoanode for increased efficiency. Within the photoanode, the semi-conducting oxides demonstrate excellent conductivity and porosity. However, despite their promise, testing various material variations in DSSCs is challenging due to time and resource constraints. This research builds on past studies by introducing machine learning to predict efficiencies for alternative DSSC configurations, specifically emphasizing the semiconducting oxide. This machine learning algorithm aims to be a cost-effective approach to identify low-cost, high-performance configurations for DSSCs and predict the system's performance across various parameters, including Power Conversion Efficiency (PCE) and Fill Factor (FF). Using machine learning, this study aims to simplify the evaluation process and speed up the identification of optimal materials and their weight percentages for the semi-conducting oxide, contributing to the advancement of sustainable and efficient DSSC technologies.

关键词： Machine learning algorithms Photovoltaic cells System performance Refining Machine learning Production Time factors Power conversion North America Testing

来源：评论

学校读者我要写书评

暂无评论

Percolation Nature of Threshold Switching: an Experimental Verification

Percolation Nature of Threshold Switching: an Experimental V...

引用

IEEE Conference on Nanotechnology

作者： Suman Devkota Brendan M Kuzior Victor G. Karpov Daniel G. Georgiev Frank Li Vamsi Borra Electrical and Computer Engineering program Youngstown State University Youngstown OH OH USA Department of Physics and Astronomy and Department of Electrical Engineering and Computer Science respectively University of Toledo Toledo OH USA

This paper details a process used to create an interconnect in a conducting systems, such as amorphous or polycrystalline semiconductors. An experimental verification on the plasticity that supports the percolation conduction mechanism is provided. The plasticity observed in the sample could be harnessed in the development of new electronic devices that require flexibility and adaptability, such as wearable electronics and bendable screens. Overall, TEM characterization, in combination with SAED analysis, revealed a highly oriented crystalline structure in the sample. In addition, the results of this study have implications for the design of new memory devices that are based on a percolation conduction mechanism, which could potentially lead to the development of more efficient and reliable non-volatile storage technologies.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Inkjet-printing assisted engineering of patternable zinc anode-based electrochromic devices

引用

materials Reports(Energy) 2024年第4期4卷 40-47,I0001页

作者： Sheng Qiu Yanan Zhao Kai Wang Jinbin Luo Rui Wang Xinwei Jiang Jingwei Chen Abdulhakem Y.Elezzabi Wu Zhang Hao Jia Haizeng Li Key Laboratory of Eco-Textiles Ministry of EducationJiangnan UniversityWuxiJiangsu214122China School of Materials Science and Engineering Ocean University of ChinaQingdaoShandong266100China Ultrafast Optics and Nanophotonics Laboratory Department of Electrical and Computer EngineeringUniversity of AlbertaAlbertaT6G 2V4Canada National Innovation Center of Advanced Dyeing&Finishing Technology Tai'anShandong 271000China School of Energy and Power Engineering Shandong UniversityJinanShandong 250061China

Zn anode-based electrochromic devices(ZECDs)stand out as a highly promising technology in the upcoming era of multifunctional electronic devices,offering a blend of electrochromic capabilities and energy storage functions within a single transparent ***,significant challenges persist in achieving efficient patterning,ensuring long-term stability,and fast color-switching kinetics for these *** this study,heterogeneous tungsten oxide nanowires(W_(17)O_(47)/Na_(0.1)WO_(3),WNOs)are formulated into inkjet printing ink to assemble patternable *** heterogeneous electrode structure of WNO enables a highly capacitive-controlled mechanism that promotes fast electrochromic/electrochemical ***,by utilizing a three-dimensional MXene mesh modified substrate,the inkjet-printed ZECDs exhibit a wide optical modulation range of 69.13%,rapid color-changing kinetics(t_(c)=4.1 s,t_(b)=5.4 s),and highly reversible capacities of 70 mAh cm^(-2)over 1000 *** scalable strategy develops the patterned electrodes with a wide optical modulation range and substantial energy storage properties,offering promising prospects for their application in next-generation smart electronics.

关键词： Zn anode-based electrochromic devices Tungsten oxide nanowires Patterned electrodes Inkjet printing Electrolyte optimization

来源：评论

学校读者我要写书评

暂无评论

Site-Specific Plan-view (S)TEM Sample Preparation from Thin Films using a Dual-Beam FIB-SEM

arXiv

引用

arXiv 2024年

作者： Ghosh, Supriya Liu, Fengdeng Nair, Sreejith Jalan, Bharat Mkhoyan, K. Andre Department of Chemical Engineering and Materials Science University of Minnesota MinneapolisMN55455 United States Department of Electrical and Computer Engineering University of Minnesota MinneapolisMN55455 United States

Plan-view transmission electron microscopy (TEM) samples are key to understand the atomic structure and associated properties of materials along their growth orientation, especially for thin films that are stain-engineered onto different substrates for property tuning. In this work, we present a method to prepare high-quality plan-view samples for analytical STEM study from thin-films using a dual-beam focused ion beam scanning electron microscope (FIB-SEM) system. The samples were prepared from thin films of perovskite oxides and metal oxides ranging from 20-80 nm thicknesses, grown on different substrates using molecular beam epitaxy. A site-specific sample preparation from the area of interest is described, which includes sample attachment and thinning techniques to minimize damage to the final TEM samples. While optimized for the thin film-like geometry, this method can be extended to other site-specific plan-view samples from bulk materials. Aberration-corrected scanning (S)TEM was used to access the quality of the thin film in each sample. This enabled direct visualization of line defects in perovskite BaSnO3 and Ir particle formation and texturing in IrO2 films. © 2024, CC BY-NC-ND.

关键词： Thin films

来源：评论

学校读者我要写书评

暂无评论

Insulating materials for realising carbon neutrality:Opportunities,remaining issues and challenges

引用

High Voltage 2022年第4期7卷 610-632页

作者： Chuanyang Li Yang Yang Guoqiang Xu Yao Zhou Mengshuo Jia Shaolong Zhong Yu Gao Chanyeop Park Qiang Liu Yalin Wang Shakeel Akram Xiaoliang Zeng Yi Li Fangwei Liang Bin Cui Junpeng Fang Lingling Tang Yulin Zeng Xingtao Hu Jiachen Gao Giovanni Mazzanti Jinliang He Jianxiao Wang Davide Fabiani Gilbert Teyssedre Yang Cao Feipeng Wang Yunlong Zi The State Key Laboratory of Power System Department of Electrical EngineeringTsinghua UniversityBeijingChina Department of Mechanical and Automation Engineering The Chinese University of Hong KongHong KongChina Simpson Querrey Institute Northwestern UniversityEvanstonIllinoisUSA Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPennsylvaniaUSA Department of Information Technology and Electrical Engineering ETH ZürichZürichSwitzerland School of Electrical and Information Engineering Tianjin UniversityTianjinChina Department of Electrical and Computer Engineering Mississippi State UniversityMississippi StateMississippiUSA Electrical and Electronic Engineering The University of ManchesterManchesterUK Department of Electrical Engineering School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghaiChina Key Laboratory of Control of Power Transmission and Conversion(SJTU) Ministry of EducationShanghaiChina College of Electrical Engineering Sichuan UniversityChengduChina Shenzhen Institute of Advanced Technology Chinese Academy of Sciences ShenzhenShenzhenChina School of Electrical Engineering Wuhan UniversityWuhanChina School of Integrated Circuits Tsinghua UniversityBeijingChina Jiangsu Jinxin Electric Appliance Co.Ltd. YangzhouChina Tai'an Tiancheng Safety Evaluation Co. Ltd.Tai'anChina Department Electrical Electronic and Information EngineeringUniversity of BolognaBolognaItaly National Engineering Laboratory for Big Data Analysis and Applications Peking UniversityBeijingChina Laplace Paul Sabatier Universityand CNRSToulouseFrance Electrical and Computer Engineering University of ConnecticutStorrsConnecticutUSA State Key Laboratory of Power Transmission Equipment&System Security and New Technology School of Electrical EngineeringChongqing UniversityChongqingChina Thrust of Sustainable Energy and Environment The Hong Kong University of Science and Technology(Guangzhou)GuangzhouChina De

The 2050 carbon-neutral vision spawns a novel energy structure revolution,and the construction of the future energy structure is based on equipment *** material,as the core of electrical power equipment and electrified transportation asset,faces unprecedented challenges and *** goal of carbon neutral and the urgent need for innovation in electric power equipment and electrification assets are first *** engineering challenges constrained by the insulation system in future electric power equipment/devices and electrified transportation assets are *** materials,including intelligent insulating material,high thermal conductivity insulating material,high energy storage density insulating material,extreme environment resistant insulating material,and environmental-friendly insulating material,are cat-egorised with their scientific issues,opportunities and challenges under the goal of carbon neutrality being *** the context of carbon neutrality,not only improves the understanding of the insulation problems from a macro level,that is,electrical power equipment and electrified transportation asset,but also offers opportunities,remaining issues and challenges from the insulating material *** is hoped that this paper en-visions the challenges regarding design and reliability of insulations in electrical equipment and electric vehicles in the context of policies towards carbon neutrality *** authors also hope that this paper can be helpful in future development and research of novel insulating materials,which promote the realisation of the carbon-neutral vision.

关键词： neutral insulation extreme

来源：评论

学校读者我要写书评

暂无评论

Hybrid magnon-phonon cavity for large-amplitude terahertz spin-wave excitation

arXiv

引用

arXiv 2024年

作者： Zhuang, Shihao Zhang, Xufeng Zhu, Yujie Sun, Nian X. Eom, Chang-Beom Evans, Paul G. Hu, Jia-Mian Department of Materials Science and Engineering University of Wisconsin-Madison MadisonWI53706 United States Department of Electrical and Computer Engineering Northeastern University BostonMA02115 United States

Terahertz (THz) spin waves or their quanta, magnons, can be efficiently excited by acoustic phonons because these excitations have similar wavevectors in the THz regime. THz acoustic phonons can be produced using photoacoustic phenomena but typically have a low population and thus a relatively low displacement amplitude. The magnetization amplitude and population of the acoustically excited THz magnons are thus usually small. Using analytical calculations and dynamical phase-field simulations, we show that a freestanding metal/magnetic-insulator (MI)/dielectric multilayer can be designed to produce large-amplitude THz spin wave via cavity-enhanced magnon-phonon interaction. The amplitude of the acoustically excited THz spin wave in the freestanding multilayer is predicted to be more than ten times larger than in a substrate-supported multilayer. Acoustically excited nonlinear magnon-magnon interaction is demonstrated in the freestanding multilayer. The simulations also indicate that the magnon modes can be detected by probing the charge current in the metal layer generated via spin-charge conversion across the MI/metal interface and the resulting THz radiation. Applications of the freestanding multilayer in THz optoelectronic transduction are computationally demonstrated. © 2024, CC BY.

关键词： Multilayers

来源：评论

学校读者我要写书评

暂无评论

Retraction Note: Solar energy harvesting to optimise the power constraints in 5G systems

引用

Optical and Quantum Electronics 2024年第10期56卷 1-2页

作者： Kiran, N. Chitra Senthilkumar, S. Satish, G. Soni, Narendra Ganatra, Amit Al-Ammar, Essam A. Iqbal, Amjad Department of Electronics and Communication Engineering Alliance University Bengaluru India Department of Electronics and Communication Engineering E.G.S. Pillay Engineering College Nagapattinam India Department of Electrical and Electronics Engineering Sree Dattha Institute of Engineering and Science Sheriguda India Department of Electrical Engineering Maharshi Parshuram College of Engineering Velneshwar Velneshwar India Department of Computer Science and Engineering Parul Institute of Engineering and Technology Parul University Limda India Department of Electrical Engineering College of Engineering King Saud University Riyadh Saudi Arabia Department of Materials Technologies Faculty of Materials Engineering Silesian University of Technology Gliwice Poland

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：