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Corrigendum to “Durable nanofibrous matrices augmented with hydrotalcite-like compounds for cutaneous regeneration of burn wounds” [Applied Clay Science 187 (2020) /105476]

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Applied Clay Science 2021年 209卷

作者： Mohan Vimala Devi S.S. Liji Sobhana Punalur John Shiny Giriprasath Ramanathan Sekar Jeyakumar Grace Felciya Velswamy Poornima Sathiah Thennarasu Pedro Fardim Uma Tiruchirapalli Sivagnanam Biological Materials Laboratory CSIR-Central Leather Research Institute (CLRI) Adyar Chennai India Department of Leather Technology (Housed at CSIR-Central Leather Research Institute) Alagappa College of Technology Anna University Chennai 600020 India Laboratory of Fiber and Cellulose Technology Abo Akademi University Porthansgatan 3 FI-20500 Abo Finland Chemical Engineering for Health & Care Bio&Chemical Systems Technology Reactor Engineering and Safety Department of Chemical Engineering KU Leuven Celestijnenlaan 200F bus 2424 B-3001 Leuven Belgium Organic Chemistry Division CSIR-Central Leather Research Institute (CLRI) Adyar Chennai India

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Optimization-Based Approach for the Inverse Design of Ribbon-Shaped Three-Dimensional Structures Assembled Through Compressive Buckling

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Physical Review Applied 2019年第5期11卷 054053-054053页

作者： Zheng Xu Zhichao Fan Haoran Fu Yuan Liu Yanyang Zi Yonggang Huang Yihui Zhang Applied Mechanics Laboratory Department of Engineering Mechanics Tsinghua University Beijing 100084 P.R. China Center for Flexible Electronics Technology Tsinghua University Beijing 100084 P.R. China State Key Laboratory for Manufacturing and Systems Engineering School of Mechanical Engineering Xi’an Jiaotong University Xi’an 710049 P.R. China Institute of Flexible Electronics Technology of Tsinghua Zhejiang 314006 P.R. China Departments of Civil and Environmental Engineering Mechanical Engineering and Materials Science and Engineering Center for Bio-Integrated Electronics Northwestern University Evanston Illinois 60208 USA

Mechanically driven assembly of three-dimensional (3D) mesostructures by compressive buckling represents an area of increasing attention, owing to the excellent compatibility with planar fabrication technologies and the broad applicability to a variety of material types (from semiconductors to metals and dielectrics) and length scales (from nanometers to centimeters). As a representative class of 3D geometries, the assembly of filamentary 3D ribbon configurations has been studied extensively, either to analyze the deformation features or to explore the applications in various functional devices. Previous studies mainly focused on the modeling of the “forward problem” that enables the prediction of the assembled 3D ribbon configuration for a prescribed 2D precursor. Development of an efficient method to solve the “inverse problem” that maps the target 3D geometry onto an unknown 2D precursor design remains a challenge. In the framework of adaptive-genetic-algorithm optimization, this paper proposes a systematic computational method to solve the inverse design problem of ribbon-shaped 3D structures assembled through compressive buckling. Based on a theoretical analysis on the inherent geometric relationship between the deformed and the initial ribbon configurations, we establish an optimization-based formulation of the inverse design problem to determine the initial geometries of 2D precursors, with the aid of finite-element analyses. Both the convergence and accuracy of the developed method are verified through a set of illustrative examples. Computational and experimental studies over approximately 20 ribbon structures, each with comparison between the target and assembled configurations, show the broad applicability of the inverse design method. Demonstrated capabilities to form 3D structures that resemble the sketches of real objects (e.g., peaked hat, butterfly, and frog) suggest promising utilities in the accurate design of functional devices.

关键词： Buckling Classical mechanics engineering Optimization problems Origami & Kirigami Devices Numerical approximation & analysis Topology

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Transforming heat transfer with thermal metamaterials and devices

arXiv

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arXiv 2020年

作者： Li, Ying Li, Wei Han, Tiancheng Zheng, Xu Li, Jiaxin Li, Baowen Fan, Shanhui Qiu, Cheng-Wei Department of Electrical and Computer Engineering National University of Singapore Singapore117583 Singapore Interdisciplinary Center for Quantum Information State Key Laboratory of Modern Optical Instrumentation College of Information Science and Electronic Engineering Zhejiang University Hangzhou310027 China ZJU-Hangzhou Global Science and Technology Innovation Center Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang Zhejiang University Hangzhou310027 China Department of Electrical Engineering Ginzton Laboratory Stanford University StanfordCA94305 United States National Engineering Research Center of Electromagnetic Radiation Control Materials State Key Laboratory of Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of China Chengdu610054 China Department of Physics University of Colorado BoulderCO80309 United States School of Mechatronics Engineering Harbin Institute of Technology Harbin150001 China Paul M. Rady Department of Mechanical Engineering University of Colorado BoulderCO80309 United States

| The demand for sophisticated tools and approaches in heat management and control has triggered fast development of emerging fields including conductive thermal metamaterials, nanophononics, far-field and near-field radiative thermal management, etc. In this review, we cast a unified perspective on the control of heat transfer, based on which the related studies can be considered as complementary paradigms toward manipulating physical parameters and realizing unprecedented phenomena in heat transfer using artificial structures, such as thermal conductivity in heat conduction, thermal emissivity in radiation, and properties related to multi-physical effects. The review is divided into three parts that focus on the three main categories of heat flow control, respectively. Thermal conduction and radiation are emphasized in the first and second parts at both macro- and micro-scale. The third part discusses the efforts to actively introduce heat sources or tune the material parameters with multi-physical effects in both conduction and radiation, including works using thermal convection. We conclude the review with challenges in this research topic and new possibilities about topological thermal effects, heat waves, and quantum thermal effects. Copyright © 2020, The Authors. All rights reserved.

关键词： Metamaterials

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Underwater Gas Manipulation: Designing Flexible but Tough Slippery Track for Underwater Gas Manipulation (Small 8/2021)

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Small 2021年第8期17卷

作者： Xinsheng Wang Haoyu Bai Jingrun Yang Zhe Li Yuchen Wu Cunming Yu Lei Jiang Moyuan Cao School of Chemical Engineering and Technology State Key Laboratory of Chemical Engineering Tianjin University Tianjin 300072 P. R. China Department of Dermatology The First Medical Center of Chinese PLA General Hospital Beijing 100853 P. R. China Laboratory of Bio-inspired Materials and Interface Sciences Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry Beihang University Beijing 100191 P. R. China

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Thickness-Dependent Electronic Transport in Ultrathin, Single Crystalline Silicon Nanomembranes (vol 5, 1900232, 2019)

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ADVANCED ELECTRONIC materials 2019年第12期5卷

作者： Song, Enming Guo, Zhongxun Li, Guodong Liao, Fuyou Li, Gongjin Du, Haina Schmidt, Oliver G. Kim, Minju Yi, Yeonjin Bao, Wenzhong Mei, Yongfeng Department of Materials Science State Key Laboratory of ASIC and Systems Fudan University Shanghai 200433 P. R. China Department of Materials Science and Engineering Frederick Seitz Materials Research Laboratory University of Illinois at Urbana-Champaign Urbana IL 61801 USA Center for Bio-Integrated Electronics Northwestern University Evanston IL 60208 USA School of Microelectronics State Key Laboratory of ASIC and System Fudan University Shanghai 200433 P. R. China Material Systems for Nanoelectronics Chemnitz University of Technology Chemnitz 09107 Germany Department of Physics Yonsei University Seoul 03722 Republic of Korea

As distinct from bulk silicon, ultrathin silicon-on-insulator (SOI) or silicon nanomembranes (Si-NMs) offer excellent electronic and mechanical properties that are essential to the development of electronic/optoelectronic systems. Ultrathin Si-NM field effect transistors (FETs) based on p-doped SOI (100) wafers are investigated. The thickness of the Si-NMs is controllably reduced from 50 nm to 10 nm through the use of a unique etching process. Based on systematic investigation of Si-NM FETs with varying thicknesses, both insulating and metallic behaviors are observed, which can be attributed to carrier enhancement by surface-dipole doping after thickness reduction. Spectroscopy characterization and theoretical simulations reveal that this high surface-dipole density can be inverted, yielding high-density electrons regardless of the bulk p-doped nature of the material, thus significantly enhancing its conductivity. These findings offer a physical understanding of thickness dependence, which is critical to the future development of ultrathin SOI electronics, of relevance to a diverse range of semiconductor applications.

关键词： insulator-to-metal transition silicon nanomembrane surface dipole density temperature dependence ultrathin thickness

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Microbial electrochemistry for bioremediation

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Environmental Science and Ecotechnology 2020年第1期1卷 85-91页

作者： Xiaofei Wang Federico Aulenta Sebastia Puig Abraham Esteve-Nunez Yujie He Yang Mu Korneel Rabaey Center for Microbial Ecology and Technology(CMET) Ghent UniversityCoupure Links 6539000GhentBelgium Centre for Advanced Process Technology for Urban Resource Recovery(CAPTURE) Ghent UniversityBelgium Water Research Institute(IRSA) National Research Council(CNR)Via Salaria Km 2930000015MonterotondoRMItaly LEQUiA.Institute of the Environment University of GironaCampus Montilivi.C/Maria Aurelia Capmany69E-17003GironaCataloniaSpain Department of Analytical Chemistry and Chemical Engineering University of AlcalaCampus UniversitarioCtra.Madrid-Barcelona Km 33.60028871Alcala de HenaresSpain State Key Laboratory of Pollution Control and Resource Reuse(SKL-PCRR) School of the EnvironmentNanjing UniversityXianlin Avenue 163Nanjing210023China Department of Applied Chemistry School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui230026China

Lack of suitable electron donors or acceptors is in many cases the key reason for pollutants to persist in the *** supplementation of electron donors or acceptors is often difficult to control and/or involves chemical additions with limited lifespan,residue formation or other adverse side *** electrochemistry has evolved very fast in the past years–this field relates to the study of electrochemical interactions between microorganisms and solid-state electron donors or *** can be supplied in such so-called bioelectrochemical systems(BESs)at low voltage to provide or extract electrons in a very precise manner.A plethora of metabolisms can be linked to electrical current now,from metals reductions to denitrification and *** this perspective,we provide an overview of the emerging applications of BES and derived technologies towards the bioremediation field and outline how this approach can be game changing.

关键词： electrochemistry precise residue

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First-principles study of bulk and two-dimensional structures of the AMnBi family of materials (A=K,Rb,Cs)

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Physical Review B 2020年第3期102卷 035444-035444页

作者： Ziming Zhu Chunyan Liao Si Li Xiaoming Zhang Weikang Wu Zhi-Ming Yu Rui Yu Wei Zhang Shengyuan A. Yang Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications Hunan Normal University Changsha 410081 China Research Laboratory for Quantum Materials Singapore University of Technology and Design Singapore 487372 Singapore School of Materials Science and Engineering Hebei University of Technology Tianjin 300130 China Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement (MOE) Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems and School of Physics Beijing Institute of Technology Beijing 100081 China School of Physics and Technology Wuhan University Wuhan 430072 China Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials College of Physics and Energy Fujian Normal University Fuzhou 350117 China School of Physics and Technology Center for Quantum Transport and Thermal Energy Science Nanjing Normal University Nanjing 210023 China

Magnetic materials with high mobilities are intriguing subjects of research from both fundamental and application perspectives. Based on first-principle calculations, we investigate the physical properties of the already synthesized AMnBi (A=K, Rb, Cs) family materials. We show that these materials are antiferromagnetic (AFM), with Néel temperatures above 300 K. They contain AFM ordered Mn layers, while the interlayer coupling changes from ferromagnetic (FM) for KMnBi to AFM for RbMnBi and CsMnBi. We find that these materials are narrow gap semiconductors. Owing to the small effective mass, the electron carrier mobility can be very high, reaching up to 105cm2/(Vs) for KMnBi. In contrast, the hole mobility is much suppressed, typically lower by two orders of magnitude. We further study their two-dimensional (2D) single layer structures, which are found to be AFM with fairly high mobility ∼103cm2/(Vs). Their Néel temperatures can still reach room temperature. Interesting, we find that the magnetic phase transition is also accompanied by a metal-insulator phase transition, with the paramagnetic metal phase possessing a pair of nonsymmorphic-symmetry-protected 2D spin-orbit Dirac points. Furthermore, the magnetism can be effectively controlled by the applied strain. When the magnetic ordering is turned into FM, the system can become a quantum anomalous Hall insulator with gapless chiral edge states.

关键词： Edge states First-principles calculations Magnetic phase transitions Spin-orbit coupling Topological materials Transport phenomena

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bioinspired Color Switchable Photonic Crystal Silicone Elastomer Kirigami

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Angewandte Chemie 2021年第26期133卷

作者： Xintao Lai Jingsong Peng Prof. Qunfeng Cheng Prof. Antoni P. Tomsia Dr. Guanlei Zhao Prof. Lei Liu Prof. Guisheng Zou Prof. Yanlin Song Prof. Lei Jiang Prof. Mingzhu Li Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100191 China School of Chemistry and Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry Beijing Advanced Innovation Center for Biomedical Engineering BUAA-UOW Joint Research Centre Beihang University Beijing 100191 China School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001 China Department of Mechanical Engineering State Key Laboratory of Tribology Tsinghua University Beijing 100084 China Key Laboratory of Materials Processing and Mold (Zhengzhou University) Ministry of Education Zhengzhou 450002 China

bioinspired dynamic structural color has great potential for use in dynamic displays, sensors, cryptography, and camouflage. However, it is quite rare for artificial structural color devices to withstand thousands of cycles. Male hummingbird's crowns and gorgets are brightly colored, demonstrating frequent color switching that is induced by regulating the orientation of the feathers through movement of skin or joints. Inspired by this unique structural color modulation, we demonstrate a flexible, mechanically triggered color switchable sheet based on a photonic crystal (PhC)-coated polydimethylsiloxane (PDMS) kirigami (PhC-PDMS kirigami) made by laser cutting. Finite element modeling (FEM) simulation reveals that the thickness of PDMS kirigami and the chamfer at the incision induced by laser cutting both dominate the out-of-plane deformation through in-plane stretching. The bioinspired PhC-PDMS kirigami shows precisely programmable structural color and keeps the color very well after recycling over 10 000 times. This bioinspired PhC-PDMS kirigami also shows excellent viewability even in bright sunlight, high readability, robust functionality, technical flexibility, and mechanical durability, which are readily exploitable for applications, such as chromic mechanical monitors for the sports industry or for medical applications, wearable camouflage, and security systems.

关键词： bioinspired color switchable kirigami silicone elastomers

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First-principles study on the bulk and two-dimensional structures of amnbi(a =k, rb, cs)-family materials

arXiv

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arXiv 2020年

作者： Zhu, Ziming Liao, Chunyan Li, Si Zhang, Xiaoming Wu, Weikang Yu, Zhi-Ming Yu, Rui Zhang, Wei Yang, Shengyuan A. Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of Physics Synergetic Innovation Center for Quantum Effects and Applications Hunan Normal University Changsha410081 China Research Laboratory for Quantum Materials Singapore University of Technology and Design Singapore487372 Singapore School of Materials Science and Engineering Hebei University of Technology Tianjin300130 China Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems School of Physics Beijing Institute of Technology Beijing100081 China School of Physics and Technology Wuhan University Wuhan430072 China Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials College of Physics and Energy Fujian Normal University Fuzhou350117 China

Magnetic materials with high mobilities are intriguing subject of research from both fundamental and application perspectives. Based on first-principle calculations, we investigate the physical properties of the already synthesized AMnBi(A =K, Rb, Cs)-family materials. We show that these materials are antiferromagnetic (AFM), with Neel temperatures above 300 K. They contain AFM ordered Mn layers, while the interlayer coupling changes from ferromagnetic (FM) for KMnBi to AFM for RbMnBi and CsMnBi. We find that these materials are narrow gap semiconductors. Owing to the small effective mass, the electron carrier mobility can be very high, reaching up to 105 cm2/(V·s) for KMnBi. In contrast, the hole mobility is much suppressed, typically lower by two orders of magnitude. We further study their two-dimensional (2D) single layer structures, which are found be AFM with fairly high mobility ∼ 103 cm2/(V·s). Their Neel temperatures can still reach room temperature. Interesting, we find that the magnetic phase transition is also accompanied by a metal-insulator phase transition, with the paramagnetic metal phase possessing a pair of nonsymmorphic-symmetry-protected 2D spin-orbit Dirac points. Furthermore, the magnetism can be effectively controlled by the applied strain. When the magnetic ordering is turned into FM, the system can become a quantum anomalous Hall insulator with gapless chiral edge states. Copyright © 2020, The Authors. All rights reserved.

关键词： Antiferromagnetism

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Metamorphosis of discontinuity lines and rectification of magnetic flux avalanches in the presence of noncentrosymmetric pinning forces

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Physical Review B 2021年第22期103卷 224514-224514页

作者： M. Motta L. Burger Lu Jiang J. D. González Acosta Ž. L. Jelić F. Colauto W. A. Ortiz T. H. Johansen M. V. Milošević C. Cirillo C. Attanasio Cun Xue A. V. Silhanek B. Vanderheyden Departamento de Física Universidade Federal de São Carlos 13565-905 São Carlos São Paulo Brazil Montefiore Research Unit Department of Electrical Engineering and Computer Science Université de Liège 4000 Sart Tilman Belgium School of Aeronautics Northwestern Polytechnical University Xi'an 710072 China Facultad de Ingeniería Universidad del Magdalena Santa Marta Colombia Departement Fysica Universiteit Antwerpen Groenenborgerlaan 171 B-2020 Antwerpen Belgium Nokia Bell Labs Antwerp Belgium Department of Physics University of Oslo POB 1048 Blindern 0316 Oslo Norway CNR-SPIN c/o Università degli Studi di Salerno I-84084 Fisciano (Sa) Italy Dipartimento di Fisica “E.R. Caianiello” Università degli Studi di Salerno I-84084 Fisciano (Sa) Italy School of Mechanics Civil Engineering and Architecture and MIIT Key Laboratory of Dynamics and Control of Complex Systems Northwestern Polytechnical University Xi'an 710072 China Experimental Physics of Nanostructured Materials Q-MAT CESAM Université de Liège B-4000 Sart Tilman Belgium

Considering a noncentrosymmetric pinning texture composed of a square array of triangular holes, the magnetic flux penetration and expulsion are investigated experimentally and theoretically. A direct visualization of the magnetic landscape obtained using a magneto-optical technique on a Nb film is complemented by a multiscale numerical modeling. This combined approach allows the magnetic flux dynamics to be identified from the single flux quantum limit up to the macroscopic electromagnetic response. Within the theoretical framework provided by time-dependent Ginzburg-Landau simulations, an estimation of the in-plane current anisotropy is obtained and its dependence with the radius of the curvature of hole vertices is addressed. These simulations show that current crowding plays an important role in channeling the flux motion, favoring hole-to-hole flux hopping rather than promoting interstitial flux displacement in between the holes. The resulting anisotropy of the critical current density gives rise to a distinct pattern of discontinuity lines for increasing and decreasing applied magnetic fields, in sharp contrast to the invariable patterns reported for centrosymmetric pinning potentials. This observation is partially accounted for by the rectification effect, as demonstrated by finite-element modeling. At low temperatures, where magnetic field penetration is dominated by thermomagnetic instabilities, highly directional magnetic flux avalanches with a fingerlike shape are observed to propagate along the easy axis of the pinning potential. This morphology is reproduced by numerical simulations. Our findings demonstrate that anisotropic pinning landscapes and, in particular, ratchet potentials produce subtle modifications to the critical state field profile that are reflected in the distribution of discontinuity lines.

关键词： Flux pinning Magneto-optical effect Monolayer films Superconductors Finite-element method Landau-Ginzburg theory

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