检索结果-内蒙古大学图书馆

arXiv 2024年

作者： Kritzell, T. Elijah Doumani, Jacques Asano, Tobias Yamada, Sota Tay, Fuyang Xu, Hongjing Yan, Han Katayama, Ikufumi Takeda, Jun Nevidomskyy, Andriy Nojiri, Hiroyuki Bamba, Motoaki Baydin, Andrey Kono, Junichiro Applied Physics Graduate Program Smalley-Curl Institute Rice University 6100 Main Street HoustonTX77005 United States Department of Electrical and Computer Engineering Rice University 6100 Main Street HoustonTX77005 United States Department of Physics Yokohama National University 79-5 Tokiwadai Hodogaya-ku Kanagawa Yokohama240-8501 Japan Department of Physics and Astronomy Rice University 6100 Main Street HoustonTX77005 United States Smalley-Curl Institute Rice University 6100 Main Street HoustonTX77005 United States Institute for Multidisciplinary Sciences Yokohama National University 79-5 Tokiwadai Hodogaya-ku Kanagawa Yokohama240-8501 Japan Institute for Materials Research Tohoku University 2-1-1 Katahira Aoba-ku Miyagi Sendai980-8577 Japan Rice Advanced Materials Institute Rice University 6100 Main Street HoustonTX77005 United States Department of Materials Science and NanoEngineering Rice University 6100 Main Street HoustonTX77005 United States

The interaction of an ensemble of two-level atoms and a quantized electromagnetic field, described by the Dicke Hamiltonian, is an extensively studied problem in quantum optics. However, experimental efforts to explore similar physics in condensed matter typically employ bosonic matter modes (e.g., phonons, magnons, and plasmons) that are describable as simple harmonic oscillators, i.e., an infinite ladder of equally spaced energy levels. Here, we examine ultrastrong coupling between a coherent light mode and an ensemble of paramagnetic spins, a finite-multilevel system, in Gd3Ga5O12. The electron paramagnetic resonance of Gd3+ ions is tuned by a magnetic field into resonance with a Fabry–Pérot cavity mode, resulting in the formation of spin–photon hybrid states, or Zeeman polaritons. We observe that the light–matter coupling strength, measured through the vacuum Rabi splitting, decreases with increasing temperature, which can be explained by the temperature-dependent population difference between the lower and higher-energy states, a trait of a finite-level system. This finding demonstrates that a spin–boson system is more compatible with the Dicke model and has advantages over boson–boson systems for pursuing experimental realizations of phenomena predicted for ultrastrongly coupled light–matter hybrids. Copyright © 2024, The Authors. All rights reserved.

关键词： Phonons

来源：评论

学校读者我要写书评

暂无评论

Rational design of pyrene and thienyltriazine-based conjugated microporous polymers for high-performance energy storage and visible-light photocatalytic hydrogen evolution from water

引用

Giant 2024年 17卷

作者： Santosh U. Sharma Mohamed Hammad Elsayed Islam M.A. Mekhemer Tso Shiuan Meng Ho-Hsiu Chou Shiao-Wei Kuo Mohamed Gamal Mohamed Department of Chemistry National Sun Yat-Sen University Kaohsiung 80424 Taiwan International PhD Program for Science National Sun Yat-sen University Kaohsiung 80424 Taiwan Department of Chemistry Faculty of Science Al-Azhar University Nasr City 11884 Cairo Egypt Department of Chemical Engineering National Tsing Hua University Hsinchu 300044 Taiwan Chemistry Department Faculty of Science Assiut University Assiut 71515 Egypt Department of Materials and Optoelectronic Science College of Semiconductor and Advanced Technology Research Center for Functional Polymers and Supramolecular Materials National Sun Yat-Sen University Kaohsiung 804 Taiwan Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung 807 Taiwan

Conjugated microporous polymers (CMPs) have found extensive applications in various fields such as optoelectronics, CO 2 capture, and catalysis. However, their potential in electrochemical supercapacitors as energy storage and H 2 production systems remains relatively unexplored. This limited exploration can be attributed to certain challenges, including issues related to structural and electrochemical stability, as well as the relatively modest specific capacitance. Additionally, many of the CMPs discovered thus far have exhibited lower energy densities, further contributing to this underexplored aspect of their utility. In this study, we prepared two different CMPs [TPET-TTh and PyT-TTh CMPs] containing thienyltriazine units (TTh) for the redox mechanism and constructed electrodes for supercapacitor applications. The synthesized TPET-TTh and PyT-TTh CMPs displayed exceptionally high specific surface areas of 545 and 528 m² g⁻¹, respectively. Furthermore, their pore sizes were very similar, centered at approximately 0.39 and 0.36 nm, respectively. To evaluate their electrochemical properties, the TTh-CMPs were examined using cyclic voltammetry (CV) and galvanostatic charge/discharge (GCD). The resulting CV curves exhibited rectangular shapes, indicative of the characteristic behavior of electric double-layer capacitors, across a range of potential and scan rates. These TPET-TTh and PyT-TTh CMPs delivered nominal specific capacitances of 74 and 76 F g −1 at 0.5 A g −1 , respectively. In addition, they exhibited outstanding capacity retentions of 95.2 and 97.30 % even after 2000 cycles [analyzed at 10 A g −1 ]. The TTh-CMPs also exhibited excellent light-capture capabilities. The PyT-TTh CMP has faster charge separation and lower charge recombination rates than TPET-TTh CMP. This results in a higher hydrogen evolution rate from the water decomposition reaction. The H 2 production rate of PyT-TTh CMP could be as high as 18,533 μmol g −1 h −1 , which is approximately 4

关键词： Pyrene 2,4,6-tri(thiophen-2-yl)-1,3,5-triazine Conjugated microporous polymer Supercapacitors H 2 evolution

来源：评论

学校读者我要写书评

暂无评论

One-dimensional van der Waals heterojunction diode

arXiv

引用

arXiv 2020年

作者： Feng, Ya Li, Henan Inoue, Taiki Chiashi, Shohei Rotkin, Slava V. Xiang, Rong Maruyama, Shigeo Department of Mechanical Engineering School of Engineering University of Tokyo Tokyo113-8656 Japan Department of Applied Physics Graduate School of Engineering Osaka University Osaka565-0871 Japan Department of Engineering Science and Mechanics Materials Research Institute Pennsylvania State University Millennium Science Complex University ParkPA16802 United States

The synthesis of one-dimensional van der Waals heterostructures was realized recently, which opens up new possibilities for prospective applications in electronics and optoelectronics. The even reduced dimension will enable novel properties and further miniaturization beyond the capabilities of its two-dimensional counterparts have revealed. The natural doping results in p-type electrical characteristics for semiconducting single-walled carbon nanotubes, while n-type for molybdenum disulfide with conventional noble metal contacts. Therefore, we demonstrate here a one-dimensional heterostructure nanotube of 11-nm-wide, with the coaxial assembly of semiconducting single-walled carbon nanotube, insulating boron nitride nanotube, and semiconducting molybdenum disulfide nanotube which induces a radial semiconductor-insulator-semiconductor heterojunction. When opposite potential polarity was applied on semiconducting single-walled carbon nanotube and molybdenum disulfide nanotube, respectively, the rectifying effect was materialized. © 2020, CC BY-NC-ND.

关键词： Heterojunctions

来源：评论

学校读者我要写书评

暂无评论

Helium Dielectric Barrier Discharge Plasma Jet (DBDjet) Processed Graphite Foil as Current Collector for Paper-Based Fluidic Aluminum-Air Batteries

SSRN

引用

SSRN 2022年

作者： Shih, Chung-Yueh Ni, I-Chih Hsu, Cheng-Che Wu, Chih-I Cheng, I-Chun Chen, Jian-Zhang Graduate Institute of Applied Mechanics National Taiwan University Taipei City10617 Taiwan Advanced Research Center for Green Materials Science and Technology National Taiwan University Taipei City10617 Taiwan Graduate Institute of Photonics and Optoelectronics National Taiwan University Taipei City10617 Taiwan Department of Chemical Engineering National Taiwan University Taipei City10617 Taiwan Department of Electrical Engineering National Taiwan University Taipei City10617 Taiwan National Taiwan University Taipei City10617 Taiwan Graduate School of Advanced Technology National Taiwan University Taipei City10617 Taiwan

A helium (He) dielectric barrier discharge plasma jet (DBDjet) was used for treating graphite foil as the current collector of a paper-based fluidic aluminum-air battery. He DBDjet treatment significantly improved the battery performance. The best power density of 40.98 mW/cm 2 was achieved with 30-s He DBDjet treatment on the graphite foil. The energy density was also improved to 720 Wh/kg. © 2022, The Authors. All rights reserved.

关键词： Flow control

来源：评论

学校读者我要写书评

暂无评论

Autonomous Multi-Modal Chemical Tomography using Bayesian Optimization

引用

Microscopy and Microanalysis 2024年第SUPPLEMENT_1期30卷

作者： Millsaps, William Schwartz, Jonathan Manassa, Jason Wendy Di, Zichao Jiang, Yi Hovden, Robert Department of Nuclear Engineering Radiological Sciences University of Michigan Ann Arbor MI US Chan Zuckerberg Imaging Institute Redwood City CA USA Department of Materials Science and Engineering University of Michigan Ann Arbor MI US Mathematics and Computer Science Division Argonne National Laboratory Lemont IL US Advanced Photon Source Facility Argonne National Laboratory Lemont IL US Applied Physics Program University of Michigan Ann Arbor MI US

来源：评论

学校读者我要写书评

暂无评论

Brain implantation of soft bioelectronics via embryonic development

引用

Nature 2025年 1-11页

作者： Hao Sheng Ren Liu Qiang Li Yichun He Thomas S. Blum Hao Zhao Xin Tang Wenbo Wang Emma Hsiao Paul Le Floch Hao Shen Ariel J. Lee Daniel Solomon Jia Liu Zuwan Lin Lishuai Jin Zheliang Wang Siyi Liu Nanshu Lu Rachael Alice Jonas-Closs James Briggs Xiao Wang Jessica L. Whited John A. Paulson School of Engineering and Applied Sciences Harvard University Boston MA USA Axoft Inc. Cambridge MA USA Electrical Engineering and Computer Science MIT Cambridge MA USA Department of Chemistry and Chemical Biology Harvard University Cambridge MA USA Department of Materials Science and Engineering University of Pennsylvania Philadelphia PA USA Department of Aerospace Engineering and Engineering Mechanics The University of Texas at Austin Austin TX USA Department of Systems Biology Harvard Medical School Boston MA USA Broad Institute of MIT and Harvard Cambridge MA USA Department of Chemistry MIT Cambridge MA USA Department of Stem Cell and Regenerative Biology Harvard University Cambridge MA USA

Developing bioelectronics capable of stably tracking brain-wide, single-cell, millisecond-resolved neural activity in the developing brain is critical for advancing neuroscience and understanding neurodevelopmental disorders. During development, the three-dimensional structure of the vertebrate brain arises from a two-dimensional neural plate1,2. These large morphological changes have previously posed a challenge for implantable bioelectronics to reliably track neural activity throughout brain development3,4,5,6,7,8,9. Here we introduce a tissue-level-soft, submicrometre-thick mesh microelectrode array that integrates into the embryonic neural plate by leveraging the tissue’s natural two-dimensional-to-three-dimensional reconfiguration. As organogenesis progresses, the mesh deforms, stretches and distributes throughout the brain, seamlessly integrating with neural tissue. Immunostaining, gene expression analysis and behavioural testing confirm no adverse effects on brain development or function. This embedded electrode array enables long-term, stable mapping of how single-neuron activity and population dynamics emerge and evolve during brain development. In axolotl models, it not only records neural electrical activity during regeneration but also modulates the process through electrical stimulation.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Bridging particle deformability and collective response in soft solids

引用

Physical Review materials 2021年第5期5卷 055605-055605页

作者： John D. Treado Dong Wang Arman Boromand Michael P. Murrell Mark D. Shattuck Corey S. O'Hern Department of Mechanical Engineering & Materials Science Yale University New Haven Connecticut 06520 USA Integrated Graduate Program in Physical and Engineering Biology Yale University New Haven Connecticut 06520 USA Department of Biomedical Engineering Yale University New Haven Connecticut 06520 USA Department of Physics Yale University New Haven Connecticut 06520 USA Systems Biology Institute Yale University West Haven Connecticut 06516 USA Benjamin Levich Institute and Physics Department The City College of New York New York New York 10031 USA Department of Applied Physics Yale University New Haven Connecticut 06520 USA

Soft, amorphous solids such as tissues, foams, and emulsions are composed of deformable particles. However, the effect of single-particle deformability on the collective behavior of soft solids is still poorly understood. We perform numerical simulations of two-dimensional jammed packings of explicitly deformable particles to study the mechanical response of model soft solids. We find that jammed packings of deformable particles with excess shape degrees of freedom possess low-frequency quartic vibrational modes that stabilize the packings even though they possess fewer interparticle contacts than the nominal isostatic value. Adding intraparticle constraints can rigidify the particles, but these particles undergo a buckling transition and gain an effective shape degree of freedom when their preferred perimeter is above a threshold value. We find that the mechanical response of jammed packings of deformable particles with shape degrees of freedom differs significantly from that of jammed packings of rigid-shape particles, which emphasizes the importance of particle deformability in modeling soft solids.

关键词： Collective behavior Jamming Emulsions Foams Tissues Molecular dynamics

来源：评论

学校读者我要写书评

暂无评论

Thermophysical properties of graphene-based nanofluids

引用

International Journal of Thermofluids 2021年 10卷

作者： Elsaid, Khaled Abdelkareem, Mohammad Ali Maghrabie, Hussein M. Sayed, Enas Taha Wilberforce, Tabbi Baroutaji, Ahmad Olabi, A.G. Chemical Engineering Program Texas A& M University College StationTX United States Dept. of Sustainable and Renewable Energy Engineering University of Sharjah P.O. Box 27272 Sharjah United Arab Emirates Center for Advanced Materials Research University of Sharjah PO Box 27272 Sharjah United Arab Emirates Chemical Engineering Department Minia University Elminia Egypt Department of Mechanical Engineering Faculty of Engineering South Valley University Qena83521 Egypt Mechanical Engineering and Design Aston University School of Engineering and Applied Science Aston Triangle BirminghamB4 7ET United Kingdom School of Engineering Faculty of Science and Engineering University of Wolverhampton Telford United Kingdom

Heat transfer operations are very common in the process industry to transfer a huge amount of thermal energy, i.e., heat, from one fluid to another for different purposes. Many fluids are used as heat transfer fluid (HTF), in which water is the most common HTF due to its high specific heat, availability, and affordability. However, conventional HTFs, including water, have a lower thermal conductivity, which is the most critical thermophysical property, hence decreased heat transfer efficiency. The addition of solid particles of highly thermally conductive material, specifically at nano-size, i.e., nanoparticles NPs, result in nanofluid NF, which has evolved over the last two decades as efficient HTF and have been investigated in a wide range of applications. Among NPs, graphene (Gr) based materials have shown very high potential as NF due to the very high thermal conductivity up to 5,000 W/m.K, hence higher thermal conductivity NF. This work aims to thoroughly discuss the thermophysical properties of Gr-based NFs, including thermal conductivity, heat capacity, density, and viscosity. The discussion focus on the thermophysical properties as it is the ultimate determinator of the heat transfer characteristics of the HTF, such as the convective and the overall heat transfer coefficient as well as the heat transfer capacity of the NF. The discussion expands to the relative enhancement in such thermophysical properties reaching up to a 40% increase in thermal conductivity, as the most critical thermophysical property. The discussion shows that Gr-based NF has a much higher thermal conductivity relative to widely studied metal oxide NF and at much lower content, and lower density and viscosity increase, which is critical for determining the pumping power requirements. Critical challenges facing the application of Gr-based NFs such as cost, stability, increased density and viscosity, and environmental impacts are thoroughly discussed with mitigation recommendations given.

关键词： Graphene

来源：评论

学校读者我要写书评

暂无评论

A multidisciplinary approach integrating geomatics, dynamic field testing and finite element modelling to evaluate the conservation state of the GuimarÃes castle's tower keep 11

A multidisciplinary approach integrating geomatics, dynamic ...

引用

11th International Conference on Structural Dynamics, EURODYN 2020

作者： Sánchez-Aparicio, L.J. Masciotta, M.G. Pellegrini, D. Conde, B. Girardi, M. Padovani, C. Ramos, L.F. Riveiro, B. Umversidad Pohtécnica de Madrid Av. Juan de Herrera 4 Madrid28040 Spain Department of Engineering and Geology University "G. d'Annunzio" of Chieti-Pescara Viale Pindaro 42 Pescara Italy Institute of Information Science and Technologies "A. Faedo" ISTI-CNR Via G Moruzzil Pisa Italy Department of Materials Engineering Applied Mechanics and Construction University of Vigo Vigo Spain ISISE Department of Civil Engineering University of Minho Campus de Azurem Guimarães Portugal

ISBN: (纸本)9786188507203

The development of realistic numerical models able to replicate as closely as possible the actual structural behaviour of heritage buildings is crucial for a thorough assessment of their structural performance against exceptional scenarios. In this regard, higher accuracy can be achieved by leveraging a multidisciplinary approach that integrates multiple contributions from different fields, such as geomatics, dynamics and computational modelling. In the present paper, this strategy is applied to the tower keep of the Guimarães castle, in Portugal, a masonry fortified structure dating back to the X century. Starting from an accurate laser scanner survey, a detailed numerical model has been created resorting to efficient algorithms able to represent complex situations. Furthermore, by exploiting the dynamic properties extracted from the processing of vibration data collected during field dynamic testing, the mechanical characteristics of the constituent materials of the tower have been estimated by means of a model updating technique embedded in a trust-region scheme implemented in the NOSA-ITACA code. The results obtained so far allowed to establish valuable baseline information that will be of pivotal importance to catch possible changes in the tower's response and to perform more in-depth structural analyses. © 2020 European Association for Structural Dynamics. All rights reserved.

关键词： Numerical models

来源：评论

学校读者我要写书评

暂无评论

Correction to: Understanding the carbonation of concrete with supplementary cementitious materials: a critical review by RILEM TC 281-CCC

引用

materials and Structures 2021年第2期54卷 1-2页

作者： von Greve-Dierfeld, Stefanie Lothenbach, Barbara Vollpracht, Anya Wu, Bei Huet, Bruno Andrade, Carmen Medina, César Thiel, Charlotte Gruyaert, Elke Vanoutrive, Hanne del Bosque, Isabel F. Saéz Ignjatovic, Ivan Elsen, Jan Provis, John L. Scrivener, Karen Thienel, Karl-Christian Sideris, Kosmas Zajac, Maciej Alderete, Natalia Cizer, Özlem Van den Heede, Philip Hooton, Robert Douglas Kamali-Bernard, Siham Bernal, Susan A. Zhao, Zengfeng Shi, Zhenguo De Belie, Nele TFB Technology and Research for Concrete Structures Wildegg Switzerland Swiss Federal Laboratories for Materials Science and Technology (Empa) Laboratory for Concrete and Construction Chemistry Dübendorf Switzerland Faculty of Civil Engineering Institute of Building Materials Research RWTH Aachen University Aachen Germany Microlab Faculty of Civil Engineering and Geosciences Delft University of Technology Delft The Netherlands LafargeHolcim Innovation Center Saint-Quentin-Fallavier Cedex France International Centre for Numerical Methods in Engineering (CIMNE) Barcelona Spain Department of Construction Institute for Sustainable Regional Development (INTERRA) University of Extremadura Cáceres Spain Center for Building Materials Technical University of Munich Munich Germany Department of Civil Engineering Structural Mechanics and Building Materials KU Leuven Ghent Belgium Department of Materials and Structures Faculty of Civil Engineering Institute of Materials and Structures University of Belgrade Belgrade Serbia Department of Earth and Environmental Sciences KU Leuven Louvain Belgium Department of Materials Science and Engineering University of Sheffield Sheffield UK Construction Materials Laboratory École polytechnique fédérale de Lausanne Lausanne Switzerland Department of Civil Engineering and Environmental Sciences University of the Bundeswehr Munich Neubiberg Germany Department of Civil Engineering Democritus University of Thrace Xanthi Greece Global R&D HeidelbergCement AG Leimen Germany Department of Structural Engineering and Building Materials Ghent University Ghent Belgium Departement of Civil Engineering KU Leuven Louvain Belgium Department of Civil and Mineral Engineering University of Toronto Toronto Canada National Institute of Applied Sciences of Rennes Rennes France School of Civil Engineering University of Leeds Leeds UK Building Materials Urban and Environment Research University of Liège Liège Belgium

A correction to this paper has been published: https://***/10.1617/s11527-020-01558-w

关键词：

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：