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Vectorial Holograms: Full‐Color Complex‐Amplitude Vectorial Holograms Based on Multi‐Freedom Metasurfaces (Adv. Funct. Mater. 21/2020)

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Advanced Functional materials 2020年第21期30卷

作者： Zi‐Lan Deng Mingke Jin Xuan Ye Shuai Wang Tan Shi Junhong Deng Ningbin Mao Yaoyu Cao Bai‐Ou Guan Andrea Alù Guixin Li Xiangping Li Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Institute of Photonics Technology Jinan University Guangzhou 510632 P. R. China Department of Materials Science and Engineering Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen 518055 P. R. China Photonics Initiative Advanced Science Research Center City University of New York 85 St. Nicholas Terrace New York NY 10031 USA Physics Program The Graduate Center City University of New York 365 Fifth Avenue New York NY 10016 USA Department of Electrical Engineering City College of New York New York NY 10031 USA

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Processing-dependent thermal stability of a prototypical amorphous metal oxide

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Physical Review materials 2018年第5期2卷 053401-053401页

作者： Li Zeng Mahyar M. Moghadam D. Bruce Buchholz Ran Li Denis T. Keane Vinayak P. Dravid Robert P. H. Chang Peter W. Voorhees Tobin J. Marks Michael J. Bedzyk Graduate Program in Applied Physics Northwestern University Evanston Illinois 60208 USA Department of Materials Science and Engineering Northwestern University Evanston Illinois 60208 USA Northwestern Synchrotron Research Center Argonne Illinois 60439 USA Department of Chemistry Northwestern University Evanston Illinois 60208 USA Department of Physics and Astronomy Northwestern University Evanston Illinois 60208 USA

Amorphous metal oxides (AMOs) are important candidate materials for fabricating next-generation thin-film transistors. While much attention has been directed toward the synthesis and electrical properties of AMOs, less is known about growth conditions that allow AMOs to retain their desirable amorphous state when subjected to high operating temperatures. Using in situ x-ray scattering and level-set simulations, we explore the time evolution of the crystallization process for a set of amorphous In2O3 thin films synthesized by pulsed-laser deposition at deposition temperatures (Td) of −50, −25, and 0 °C. The films were annealed isothermally and the degree of crystallinity was determined by a quantitative analysis of the time-evolved x-ray scattering patterns. As expected, for films grown at the same Td, an increase in the annealing temperature TA led to a shorter delay prior to the onset of crystallization, and a faster crystallization rate. Moreover, when lowering the deposition temperature by 25 °C, a 40 °C increase in annealing temperature is needed to achieve the same time interval for the crystals to grow from 10 to 90% volume fraction of the sample. Films grown at Td=0∘C exhibited strong cubic texture after crystallization. A level-set method was employed to quantitatively model the texture that develops in the microstructures and to determine key parameters, such as the interface growth velocity, the nucleation density, and the activation energy. The differences observed in the crystallization processes are attributed to the changes in the atomic structure of the oxide and possible nanocrystalline inclusions that formed during the deposition of the amorphous phase.

关键词： Annealing Crystallization Electron diffraction Laser ablation Numerical techniques X-ray diffraction

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Inside Front Cover: Volume 2 Issue 2

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SmartMat 2021年第2期2卷

作者： Jie Xu Xiaoya Cui Nan Liu Yanan Chen Hong-Wei Wang Ministry of Education Key Laboratory of Protein Sciences Beijing Advanced Innovation Center for Structural Biology School of Life Sciences Tsinghua University Beijing China Tsinghua-Peking Joint Center for Life Sciences Tsinghua University Beijing China School of Materials Science and Engineering Tsinghua University Tianjin China Hong-Wei Wang Ministry of Education Key Laboratory of Protein Sciences Beijing Advanced Innovation Center for Structural Biology School of Life Sciences Tsinghua University 100084 Beijing China. Joint Graduate Program of Peking-Tsinghua-NIBS School of Life Sciences Tsinghua University Beijing China Beijing Frontier Research Center for Biological Structures Tsinghua University Beijing China

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Resonant photonic structures in porous silicon for biosensing 9

Resonant photonic structures in porous silicon for biosensin...

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Frontiers in Biological Detection: From Nanosensors to Systems IX

作者： Zhao, Yiliang Rodriguez, Gilberto A. Graham, Yasmin M. Cao, Tengfei Gaur, Girija Weiss, Sharon M. Interdisciplinary Graduate Program in Materials Science Vanderbilt University NashvilleTN37235 United States Department of Electrical Engineering and Computer Science Vanderbilt University NashvilleTN37235 United States Department of Mechanical Engineering University of Maryland Baltimore County BaltimoreMD21250 United States

ISBN: (数字)9781510606043

ISBN: (纸本)9781510606036

The formation of resonant photonic structures in porous silicon leverages the benefit of high surface area for improved molecular capture that is characteristic of porous materials with the advantage of high detection sensitivity that is a feature of resonant optical devices. This review provides an overview of the biosensing capabilities of a variety of resonant porous silicon photonic structures including microcavities, Bloch surface waves, ring resonators, and annular Bragg resonators. Detection sensitivities > 1000 nm/RIU are achieved for small molecule detection. The challenge of detecting molecules that approach and exceed the pore diameter is also addressed. © 2017 SPIE.

关键词： Porous silicon

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Author Correction: Highly efficient, heat dissipating, stretchable organic light-emitting diodes based on a MoO3/Au/MoO3 electrode with encapsulation

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Nature communications 2021年第1期12卷 7355页

作者： Dae Keun Choi Dong Hyun Kim Chang Min Lee Hassan Hafeez Subrata Sarker Jun Su Yang Hyung Ju Chae Geon-Woo Jeong Dong Hyun Choi Tae Wook Kim Seunghyup Yoo Jinouk Song Boo Soo Ma Taek-Soo Kim Chul Hoon Kim Hyun Jae Lee Jae Woo Lee Donghyun Kim Tae-Sung Bae Seung Min Yu Yong-Cheol Kang Juyun Park Kyoung-Ho Kim Muhammad Sujak Myungkwan Song Chang-Su Kim Seung Yoon Ryu Division of Display and Semiconductor Physics Display Convergence College of Science and Technology Korea University Sejong Campus Sejong City Republic of Korea. Department of Applied Physics Korea University Sejong Campus Sejong City Republic of Korea. E-ICT-Culture-Sports Convergence Track Korea University Sejong Campus Sejong City Republic of Korea. Division of Display and Semiconductor Physics Display Convergence College of Science and Technology Korea University Sejong Campus Sejong City Republic of Korea. hassaniskt@***. Department of Applied Physics Korea University Sejong Campus Sejong City Republic of Korea. hassaniskt@***. School of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea. Department of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea. Department of Advanced Materials Chemistry College of Science and Technology Korea University Sejong Campus Sejong City Republic of Korea. Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology Korea University Sejong Republic of Korea. Jeonju Center Korea Basic Science Institute (KBSI) Analysis & Researcher Division Jeollabuk-do Republic of Korea. Department of Chemistry Pukyong National University 45 Yongso-Ro Nam-gu Busan Republic of Korea. Department of Physics Chungbuk National University Cheongju Republic of Korea. Surface Materials Division Korea Institute of Materials Science (KIMS) Changwon Republic of Korea. Surface Materials Division Korea Institute of Materials Science (KIMS) Changwon Republic of Korea. cskim1025@kims.re.kr. Division of Display and Semiconductor Physics Display Convergence College of Science and Technology Korea University Sejong Campus Sejong City Republic of Korea. justie74@korea.ac.kr. Department of Applied Physics Korea University Sejong Campus Sejong City Republic of Korea. justie74@korea.ac.kr. E-ICT-Culture-Sports Conve

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Efficient Construction Method for Phase Diagrams Using Uncertainty Sampling

arXiv

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arXiv 2018年

作者： Terayama, Kei Tamura, Ryo Nose, Yoshitaro Hiramatsu, Hidenori Hosono, Hideo Okuno, Yasushi Tsuda, Koji RIKEN Center for Advanced Intelligence Project Tokyo103-0027 Japan Medical Sciences Innovation Hub Program RIKEN Cluster for Science Technology and Innovation Hub Kanagawa230-0045 Japan Graduate school of Medicine Kyoto University Kyoto606-8507 Japan National Institute for Materials Science Ibaraki305-0044 Japan Research and Services Division of Materials Data and Integrated System National Institute for Materials Science Ibaraki305-0047 Japan Graduate school of Frontier Sciences University of Tokyo Chiba277-8568 Japan Department of Materials Science and Engineering Kyoto University Kyoto606-8501 Japan Laboratory for Materials and Structures Institute of Innovative Research Tokyo Institute of Technology Yokohama226-8503 Japan Materials Research Center for Element Strategy Tokyo Institute of Technology Yokohama226-8503 Japan

We develop a method to efficiently construct phase diagrams using machine learning. Uncertainty sampling (US) in active learning is utilized to intensively sample around phase boundaries. Here, we demonstrate constructions of three known experimental phase diagrams by the US approach. Compared with random sampling, the US approach decreases the number of sampling points to about 20%. In particular, the reduction rate is pronounced in more complicated phase diagrams. Furthermore, we show that using the US approach, undetected new phase can be rapidly found, and smaller number of initial sampling points are sufficient. Thus, we conclude that the US approach is useful to construct complicated phase diagrams from scratch and will be an essential tool in materials science. Copyright © 2018, The Authors. All rights reserved.

关键词： Graphic methods

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Hypostatic jammed packings of frictionless nonspherical particles

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Physical Review E 2018年第1期97卷 012909-012909页

作者： Kyle VanderWerf Weiwei Jin Mark D. Shattuck Corey S. O'Hern Department of Physics Yale University New Haven Connecticut 06520 USA Department of Mechanics and Engineering Science Peking University Beijing 100871 China Department of Mechanical Engineering & Materials Science Yale University New Haven Connecticut 06520 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 Graduate Program in Computational Biology and Bioinformatics Yale University New Haven Connecticut 06520 USA

We perform computational studies of static packings of a variety of nonspherical particles including circulo-lines, circulo-polygons, ellipses, asymmetric dimers, dumbbells, and others to determine which shapes form packings with fewer contacts than degrees of freedom (hypostatic packings) and which have equal numbers of contacts and degrees of freedom (isostatic packings), and to understand why hypostatic packings of nonspherical particles can be mechanically stable despite having fewer contacts than that predicted from naive constraint counting. To generate highly accurate force- and torque-balanced packings of circulo-lines and cir-polygons, we developed an interparticle potential that gives continuous forces and torques as a function of the particle coordinates. We show that the packing fraction and coordination number at jamming onset obey a masterlike form for all of the nonspherical particle packings we studied when plotted versus the particle asphericity A, which is proportional to the ratio of the squared perimeter to the area of the particle. Further, the eigenvalue spectra of the dynamical matrix for packings of different particle shapes collapse when plotted at the same A. For hypostatic packings of nonspherical particles, we verify that the number of “quartic” modes along which the potential energy increases as the fourth power of the perturbation amplitude matches the number of missing contacts relative to the isostatic value. We show that the fourth derivatives of the total potential energy in the directions of the quartic modes remain nonzero as the pressure of the packings is decreased to zero. In addition, we calculate the principal curvatures of the inequality constraints for each contact in circulo-line packings and identify specific types of contacts with inequality constraints that possess convex curvature. These contacts can constrain multiple degrees of freedom and allow hypostatic packings of nonspherical particles to be mechanically stable.

关键词： Granular materials Granular packing Jamming

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Innentitelbild: Diels–Alder Conversion of Acrylic Acid and 2,5-Dimethylfuran topara-Xylene Over Heterogeneous Bi-BTC Metal-Organic Framework Catalysts Under Mild Conditions (Angew. Chem. 2/2021)

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Angewandte Chemie 2020年第2期133卷

作者： Jyun-Yi Yeh Season S. Chen Shih-Cheng Li Celine H. Chen Dr. Tetsuya Shishido Dr. Daniel C. W. Tsang Dr. Yusuke Yamauchi Yi-Pei Li Prof. Kevin C.-W. Wu International Graduate Program of Molecular Science and Technology (NTU-MST) National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Taiwan International Graduate Program (TIGP) Academia Sinica No. 128 Sec. 2 Academia Road Taipei 11529 Taiwan Department of Chemical Engineering National (Taiwan) University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan School of Engineering Brown University Providence RI 02912 USA Department of Applied Chemistry for Environment Tokyo Metropolitan University 1-1 Minami-osawa Hachioji Tokyo 192-0397 Japan Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong China JST-ERATO Yamauchi Materials Space-Tectonics Project Kagami Memorial Research Institute for Materials Science and Technology Waseda University 2-8-26 Nishiwaseda Shinjuku-ku Tokyo 169-0051 Japan Australian Institute for Bioengineering and Nanotechnology (AIBN) School of Chemical Engieering The University of Queensland Brisbane QLD 4072 Australia Center of Atomic Initiative for New Materials National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan

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Inside Cover: Diels–Alder Conversion of Acrylic Acid and 2,5-Dimethylfuran topara-Xylene Over Heterogeneous Bi-BTC Metal-Organic Framework Catalysts Under Mild Conditions (Angew. Chem. Int. Ed. 2/2021)

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Angewandte Chemie International Edition 2020年第2期60卷

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Diels–Alder Conversion of Acrylic Acid and 2,5-Dimethylfuran topara-Xylene Over Heterogeneous Bi-BTC Metal-Organic Framework Catalysts Under Mild Conditions

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Angewandte Chemie 2020年第2期133卷

The heterogeneous metal-organic framework Bi-BTC successfully catalyzed the synthesis of para -xylene from bio-based 2,5-dimethylfuran and acrylic acid in a promising yield (92 %), under relatively mild conditions (160 °C, 10 bar), and with a low reaction-energy barrier (47.3 kJ mol −1 ). The proposed reaction strategy also demonstrates a remarkable versatility for furan derivatives such as furan and 2-methylfuran.

关键词： 2,5-dimethylfuran acrylic acid Bi-BTC metal-organic frameworks para-xylene

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