检索结果-内蒙古大学图书馆

Editorial for advanced energy storage and conversion materials and technologies

Rare Metals 2020年第9期39卷 967-969页

作者： Jian-Min Ma Yu-Tao Li School of Physics and Electronics Hunan UniversityChangsha 410082China Materials Science and Engineering Program and Texas Materials Institute The University of Texas at AustinAustinTX 78712USA

Energy storage and conversion technologies have attracted increasing attention from academic and industrial communities due to the large demands from wide-ranging *** and developing high-performance electrode materials are cruciual to improve the performance of energy storage and conversion *** present,various energy storage and conversion devices,i.e.,potassium-ion batteries(PIBs).

关键词： energy potassium electrode

来源：评论

学校读者我要写书评

暂无评论

Mid-IR Gain of Tensile Germanium Waveguide Lasers with SiNx Stress Liners

Mid-IR Gain of Tensile Germanium Waveguide Lasers with SiNx ...

引用

2021 IEEE Photonics Society Summer Topicals Meeting Series, SUM 2021

作者： Reza, Md Shamim Gulyas, Istvan Wistey, Mark A. Materials Science Engineering and Commercialization Program Texas State University San MarcosTX78666 United States Department of Physics Texas State University San MarcosTX78666 United States

ISBN: (纸本)9781665416009

We used ab-initio and finite element strain modeling to explain high threshold current densities in reported tensile Ge lasers. Anisotropic strains improve carrier confinement but reduces optical confinement, and intervalence band absorption still dominates. Strain anisotropy increases Jth compared with simple slab models. © 2021 IEEE.

关键词： Germanium

来源：评论

学校读者我要写书评

暂无评论

Terahertz emission characteristics of semi-insulating and low-temperature grown gallium arsenide photoconductive antenna at 780 nm and 1.55μm

Terahertz emission characteristics of semi-insulating and lo...

引用

International Conference on Infrared and Millimeter Waves

作者： Alexander De Los Reyes Jairrus Publico Ivan Cedrick Verona John Paul Ferrolino Vince Paul Juguilon Lourdes Nicola Dela Rosa Hannah Bardolaza Neil Irvin Cabello Elmer Estacio National Institute of Physics University of the Philippines Diliman Quezon City Philippines Materials Science and Engineering Program University of the Philippines Diliman Quezon City Philippines

ISBN: (数字)9781728194271

ISBN: (纸本)9781728194288

The terahertz (THz) emission from semi-insulating (SI-GaAs) and low-temperature grown gallium arsenide (LTGaAs) photoconductive antenna were measured at above bandgap 780 nm and below bandgap 1.55 $\mu \mathrm{m}$ photoexcitation conditions. The SI-GaAs and LT-GaAs samples have also shown different amplitude and bandwidth characteristics between the two wavelengths. We explain our results in the context of the different THz radiation mechanisms between SI-GaAs and LT-GaAs at below-bandgap excitation. This work provides insights on the possible development of GaAs PCAs for telecommunication wavelength application.

关键词： Antenna measurements Photonic band gap Wavelength measurement Gallium arsenide Bandwidth Communications technology Antennas

来源：评论

学校读者我要写书评

暂无评论

On The Mechanism of Nucleation in Pulsed-laser Quenched Si Films on SiO 2

引用

MRS Online Proceedings Library 2021年第1期1245卷 1-6页

作者： Y. Deng Q. Hu U. J. Chung A. M. Chitu A. B. Limanov S. James Im Program in Materials Science and Engineering Department of Applied Physics and Applied Mathematics Columbia University New York USA

We have investigated the solid nucleation mechanism in laser-quenched Si films on SiO2. Previously neglected experimental steps, consisting of BHF-etching and irradiation in vacuum, were implemented to reduce potential extrinsic influences. The resulting experimental findings and computational analysis lead us to conclude that solid nucleation consistently takes place heterogeneously at, and only at, the bottom liquid Si-SiO2 interface.

关键词： Si thin film nucleation & growth

来源：评论

学校读者我要写书评

暂无评论

Magnetic Exciton-Polariton with Strongly Coupled Atomic and Photonic Anisotropies

arXiv

引用

arXiv 2023年

作者： Li, Qiuyang Xie, Xin Alfrey, Adam Beach, Christiano W. McLellan, Nicholas Lu, Yang Hu, Jiaqi Liu, Wenhao Dhale, Nikhil Lv, Bing Zhao, Liuyan Sun, Kai Deng, Hui Department of Physics University of Michigan Ann ArborMI48109 United States Applied Physics Program University of Michigan Ann ArborMI48109 United States Department of Electrical Engineering and Computer Science University of Michigan Ann ArborMI48109 United States Department of Physics University of Texas at Dallas RichardsonTX75080 United States

Anisotropy plays a key role in science and engineering. However, the interplay between the material and engineered photonic anisotropies has hardly been explored due to the vastly different length scales. Here we demonstrate a matter-light hybrid system, exciton-polaritons in a 2D antiferromagnet, CrSBr, coupled with an anisotropic photonic crystal (PC) cavity, where the spin, atomic lattice, and photonic lattices anisotropies are strongly correlated, giving rise to unusual properties of the hybrid system and new possibilities of tuning. We show exceptionally strong coupling between engineered anisotropic optical modes and anisotropic excitons in CrSBr, which is stable against excitation densities a few orders of magnitude higher than polaritons in isotropic materials. Moreover, the polaritons feature a highly anisotropic polarization tunable by tens of degrees by controlling the matter-light coupling via, for instance, spatial alignment between the material and photonic lattices, magnetic field, temperature, cavity detuning and cavity quality-factors. The demonstrated system provides a prototype where atomic- and photonic-scale orders strongly couple, opening opportunities of photonic engineering of quantum materials and novel photonic devices, such as compact, on-chip polarized light source and polariton laser. © 2023, CC BY-NC-ND.

关键词： Anisotropy

来源：评论

学校读者我要写书评

暂无评论

EXPLORING HOW LEAN PROJECT DELIVERY SUPPORTS CARBON CAPTURE, UTILIZATION, AND STORAGE FOR INDUSTRIAL RETROFITS 31st

EXPLORING HOW LEAN PROJECT DELIVERY SUPPORTS CARBON CAPTURE,...

引用

31st Annual Conference of the International Group for Lean Construction, IGLC 2023

作者： Heier, Nicholas Chakravarti, Anika Røyne, Anja Parrish, Kristen Australian American Defense Fellowship Australia Anika Chakravarti Biomimicry Program Arizona State University TempeAZ United States Department of Physics University of Oslo Norway Del E. Webb School of Construction School of Sustainable Engineering and the Built Environment Arizona State University TempeAZ United States

The "lean construction ideal" is to maximize stakeholder value, minimize waste, and emphasize collaboration throughout the design, construction, and operating stages of a building project. In practice, lean construction relies on methods such as the Integrated Project Delivery (IPD) system to align stakeholder interests and share risks throughout the project lifecycle. IPD effectively enfranchises various project stakeholders as parties to one agreement, integrating their involvement throughout the design and construction process. While lean construction methods are evidenced to enhance project efficiency in cost and schedule while improving quality, the collaboration fostered by IPD also creates a project environment conducive to innovation and the adoption of new technologies. To that end, lean construction environments, and IPD projects in particular, may offer an opportunity to increase the adoption rates of more environmentally-conscious design alternatives, particularly as the construction industry continues to trend in a more sustainable direction. This paper explores how the lean project delivery system supports incorporating innovative design options on retrofit construction projects (i.e., on existing facilities), and leverages incorporating carbon capture, utilization, and storage (CCUS) systems on cement plants as a proof of concept. © 2023, International Group for Lean Construction. All rights reserved.

关键词： Construction industry

来源：评论

学校读者我要写书评

暂无评论

Femtosecond Laser Ferroelectric Domains Reversal in Monodomain Calcium Barium Niobate Crystal

Femtosecond Laser Ferroelectric Domains Reversal in Monodoma...

引用

Laser Science, LS 2021 - Part of Frontiers in Optics, FiO 2021

作者： Mazur, Leszek Mateusz Liu, Shan Chen, Xin Krolikowski, Wieslaw Sheng, Yan Advanced Materials Engineering and Modelling Group Faculty of Chemistry Wroclaw University of Science and Technology Wyb. Wyspianskiego 27 Wroclaw50-370 Poland Science Program Texas A&M University at Qatar Doha Qatar Laser Physics Centre Research School of Physics The Australian National University CanberraACT2601 Australia School of Physics and Optoelectronic Engineering Xidian University Xian710071 China

Femtosecond pulses are used for the first time to invert spontaneous polarization in the monodomain calcium barium niobate crystal. The resulting domain patterns allow transverse SHG without the nonlinear noise encoun... 详细信息

ISBN: (纸本)9781557528209

关键词： Femtosecond lasers

来源：评论

学校读者我要写书评

暂无评论

Energy calibration of GTM on ground

arXiv

引用

arXiv 2024年

作者： Huang, Chien-You Chang, Hsiang-Kuang Lin, Chih-Hsun Tsao, Che-Chih Hu, Chin-Ping Chang, Hao-Min Chen, Yan-Fu Feng, An-Hsuan Huang, Yi-Wen Lin, Tzu-Hsuan Tsao, Yi-Ning Wu, Chih-En Wu, Chun-Wei Department of Physics National Tsing Hua University Hsinchu300044 Taiwan Institute of Astronomy National Tsing Hua University Hsinchu300044 Taiwan Institute of Space Engineering National Tsing Hua University Hsinchu300044 Taiwan Institute of Physics Academia Sinica Taipei115201 Taiwan Department of Power Mechanical Engineering National Tsing Hua University Hsinchu300044 Taiwan Department of Physics National Changhua University of Education Changhua500207 Taiwan Arete Honors Program National Yang Ming Chiao Tung University Hsinchu300093 Taiwan

The Gamma-ray Transients Monitor (GTM) on board the Formosat-8B (FS-8B) satellite is designed to detect and localize Gamma-Ray Bursts (GRBs). By utilizing 2+2 CITIROC chips to manipulate 4+4 detectors, which are composed of GAGG(Ce) scintillators coupled with Silicon Photomultipliers (SiPMs) and oriented in various directions to achieve all-sky coverage, the GRB saturation fluences of GTM in the 50 keV to 1 MeV range for Short GRBs (SGRBs) and Long GRBs (LGRBs) were estimated to be about 3.1 × 10−4 and 5.0 × 10−3 erg/cm2, respectively, based on simulations. To precisely interpret the GTM readout signal in terms of energy, several measurements for isotope and gain calibration were conducted. Despite encountering issues with crosstalk and SiPM saturation effect in the data, the energy spectrum can still be recovered by appropriately discarding channel noise and mapping with the correct ADC-to-energy relation. This paper summarizes the energy resolution of GTM and the linear variations in the relationship between photon energy and readout signal. At 662 keV, the energy resolution is about 16 %. Also, it demonstrates that greater gain is achieved by increasing voltage or decreasing temperature. © 2024, CC BY.

关键词： Gamma rays

来源：评论

学校读者我要写书评

暂无评论

Dosimetric Investigation of Six Ru-106 Eye Plaques by EBT3 Radiochromic Films and Monte Carlo Simulation

引用

Journal of Biomedical physics and engineering 2023年第4期13卷 309-316页

作者： Arjmand, Mojtaba Ghassemi, Fariba Rafiepour, Payman Zeinali, Reyhaneh Riazi-Esfahani, Hamid Beiki-Ardakani, Akbar Ocular Oncology service Farabi Eye Hospital Tehran University of Medical Sciences Tehran Iran Retina & Vitreous Service Ocular Oncology Service Farabi Eye Hospital Tehran University of Medical Sciences Tehran Iran Department of Nuclear Engineering Shiraz University of Medical Sciences Shiraz Iran Department of Medical Physics Tabriz University of Medical Science Tabriz Iran Retina Service Farabi Eye Hospital Tehran University of Medical Sciences Tehran Iran Radiation Medicine Program Princess Margaret Cancer Centre University Health Network TorontoON Canada

Background: Ophthalmic brachytherapy using radioactive plaques is an effective technique for the treatment of uveal melanoma. Ru-106 eye plaques are considered as interesting issue due to their steep gradient dose. The pre-planning evaluation of dosimetric parameters is essential for the treatment planning system. Objective: The current study aims at providing dose distributions of six Ru-106 eye plaques (CCA, CCB, CGD, CIB, COB and COD) using radiochromic EBT3 film, Geant4 Monte Carlo toolkit and the treatment planning software (Plaque Simulator). Material and Methods: In this experimental study, an in house phantom was employed for depth dose measurements with EBT3 films. Also, Geant4.10.5 scoring mesh was implemented to obtain the 2D dose distribution of the plaques. The results were compared with Plaque Simulator software and the manufacturer’s (BEBIG) data. The gamma index criterion (3%/3 mm) was used to evaluate dose distributions obtained by the film measurements and Geant4 simulation. Results: A good agreement was achieved between simulation and experimental re-sults. Gamma index passing rate was 94.2%, 89.3%, 88.2%, 82.2%, 92.2% and 90.1% for CCA, CCB, CGD, CIB, COB and COD plaques, respectively. Absolute dose rate (mGy/ min) obtained by EBT3 film at the depth of 2 mm was 79.4 mGy/min, 81.0 mGy/min, 78.6 mGy/min, 62.2 mGy/min, 75.2 mGy/min and 81.2 mGy/min for CCA, CCB, CGD, CIB, COB and COD plaques, respectively. Conclusion: The measured dose distributions and lateral dose profiles may be utilized in the treatment planning system to cover clinical volumes such as the clinical target volume and the gross tumor volume. © 2023, Shiraz University of Medical Sciences. All rights reserved.

关键词： Monte Carlo methods

来源：评论

学校读者我要写书评

暂无评论

Revising the quantum work fluctuation framework to encompass energy conservation

arXiv

引用

arXiv 2024年

作者： Rubino, Giulia Hovhannisyan, Karen V. Skrzypczyk, Paul Quantum Engineering Technology Labs H. H. Wills Physics Laboratory and Deparment and Electrical & Electronic Engineering University of Bristol BS8 1FD United Kingdom H. H. Wills Physics Laboratory University of Bristol Tyndall Avenue BristolBS8 1TL United Kingdom University of Potsdam Institute of Physics and Astronomy Karl-Liebknecht-Str. 24-25 Potsdam14476 Germany CIFAR Azrieli Global Scholars program CIFAR Toronto Canada

Work is a process-based quantity, and its measurement typically requires interaction with a measuring device multiple times. While classical systems allow for non-invasive and accurate measurements, quantum systems present unique challenges due to the influence of the measuring device on the final value of work. As recent studies have shown, among these challenges is the impossibility of formulating a universal definition of work that respects energy conservation for coherent quantum systems and is compatible with the Jarzynski equality—a fluctuation relation linking the equilibrium free energy difference to the non-equilibrium work. Here we overcome this challenge by introducing a genuinely quantum, positive correction to the Jarzynski equality stemming from imposing energy conservation. When sufficiently large, this correction forces quantum work to violate the second law more often. Moreover, we construct modified two-point measurement (TPM) schemes for work that ensure energy conservation for coherent quantum states and align with our quantum-corrected fluctuation relation. We further underscore the practicality and effectiveness of these schemes by providing detailed circuit implementations for them. Copyright © 2024, The Authors. All rights reserved.

关键词： Energy conservation

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：