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Photodetectors: Solvent-Based Soft-Patterning of Graphene Lateral Heterostructures for Broadband High-Speed Metal–Semiconductor–Metal Photodetectors (Adv. Mater. Technol. 2/2017)

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Advanced materials Technologies 2017年第2期2卷

作者： Yang Xu Ayaz Ali Khurram Shehzad Nan Meng Mingsheng Xu Yuhan Zhang Xinran Wang Chuanhong Jin Hongtao Wang Yuzheng Guo Zongyin Yang Bin Yu Yuan Liu Qiyuan He Xiangfeng Duan Xiaomu Wang Ping-Heng Tan Weida Hu Hai Lu Tawfique Hasan College of Information Science & Electronic Engineering State Key Laboratory of Silicon Materials Zhejiang University Hangzhou Zhejiang 310027 China Cambridge Graphene Centre University of Cambridge Cambridge CB3 0FA UK National Laboratory of Solid State Microstructures School of Electronic Science and Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China School of Materials Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China Institute of Applied Mechanics Zhejiang University Hangzhou Zhejiang 310027 China Rowland Institute Harvard University 100 Edwin H Land Blvd Cambridge MA 02142 USA College of Nanoscale Science and Engineering State University of New York Albany NY 12203 USA Department of Chemistry and Biochemistry and California Nanosystems Institute University of California Los Angeles CA 90095 USA State Key Laboratory of Superlattices and Micro Structures Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China National Laboratory for Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and Engineering Nanjing University Nanjing 210093 China

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Intrinsic Raman signatures of pristine hybrid perovskite CH3NH3PbI3 and its multiple stages of structure transformation

Intrinsic Raman signatures of pristine hybrid perovskite CH3...

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2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)

作者： Qiong Chen Henan Liu Hui-Seon Kim Yucheng Liu Mengjin Yang Naili Yue Gang Ren Kai Zhu Shengzhong Frank Liu Nam-Gyu Park Yong Zhang Department of Electrical and Computer Engineering The University of North Carolina at Charlotte Charlotte NC USA Optical Science and Engineering graduate program The University of North Carolina at Charlotte Charlotte NC USA Department of Energy Science Sungkyunkwan University Suwon South Korea National Ministry of Education Shaanxi Normal University Xi'an China Chemical and Materials Science Center National Renewable Energy Laboratory CO USA Molecular Foundry Lawrence Berkeley National Laboratory Berkeley CA USA Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Normal University Xi'an Shaanxi CN School of Chemical Engineering Sungkyunkwan University Suwon South Korea University of North Carolina at Charlotte Charlotte NC US

By performing spatially resolved Raman and photoluminescence spectroscopy with different illumination conditions, we have achieved a unified understanding towards the spectroscopy signatures of the organic-inorganic hybrid perovskite, transforming from the pristine state (CH 3 NH 3 PbI 3 or MAPbI 3 ) to fully degraded state (i.e., PbI 2 ), for samples with varying crystalline domain size from mesoscopic scale to macroscopic size, synthesized by three different techniques.

关键词： Measurement by laser beam Density measurement Chemistry Lighting Optical films Degradation Spectroscopy

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Recent innovations in material research

Recent innovations in material research

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作者： Cai, W.J. Chen, D. Hu, H. Huang, X.P. Khotsyanovskii, A.O. Li, X.S. Silva, F.J.G. Yao, S.H. Zheng, H.N. Department of Chemical Materials and Biomolecular Engineering University of Connecticut United States School of Engineering and Applied Science Harvard University United States Department of Mechanical Automotive and Materials Engineering University of Windsor Canada Department of Mechanical Engineering Massachusetts Institute of Technology United States Pisarenko Institute of Problems of Strength National Academy of Sciences of Ukraine Ukraine Mechanical Engineering Department ISEP School of Engineering Polytechnic of Porto Portugal Bachelor Degree Program in Technology Management Chang Jung Christian University Taiwan

The new trends and developments in the novel functional materials and material research innovations presented at the 3rd Global Conference on materials science and engineering (CMSE2014), which was held on 20-23 October 2014 in Shanghai, China, is discussed. R. Toyoda, M. Tawata, M. Hashimoto, and Y. Matsumura presented 'Internal stress control of transition-metal thin films', where the effects of ion bombardment parameter Pi on the internal stress of thin films were evaluated. X.G. Wang, Z.L. Chen, and X.Y. Wang presented their study 'Measurement of the interface characteristic based on ultrasonic longitudinal wave', which provided a lucrative alternative to conventional ultrasonic techniques, since it allows one to avoid the mutual superposition of reflected waves at the same thin coating interface. P. Wang and C.Y. Zhao presented their 'Study on reducing railway noise by porous concrete sound-absorbing panel', which is crucial for noise reduction near the railway lines. In the paper entitled 'Numerical study on the heat preservation of the ladle used for twin-roll strip casting', J.H. Dong, M. Chen and N. Wang developed a 3D mathematical model, in order to analyze the heat transfer and temperature drop on the ladle using the finite volume method.

关键词： Finite volume method

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Photodetectors: A Broadband Fluorographene Photodetector (Adv. Mater. 22/2017)

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Advanced materials 2017年第22期29卷

作者： Sichao Du Wei Lu Ayaz Ali Pei Zhao Khurram Shehzad Hongwei Guo Lingling Ma Xuemei Liu Xiaodong Pi Peng Wang Hehai Fang Zhen Xu Chao Gao Yaping Dan Pingheng Tan Hongtao Wang Cheng‐Te Lin Jianyi Yang Shurong Dong Zhiyuan Cheng Erping Li Wenyan Yin Jikui Luo Bin Yu Tawfique Hasan Yang Xu Weida Hu Xiangfeng Duan College of Information Science and Electronic Engineering Zhejiang University Hangzhou Zhejiang 310027 China State Key Laboratory of Silicon Materials College of Material Science Zhejiang University Hangzhou Zhejiang 310027 China Institute of Applied Mechanics Zhejiang University Hangzhou Zhejiang 310027 China National Laboratory for Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Zhejiang University Hangzhou Zhejiang 310027 China University of Michigan ‐ Shanghai Jiao Tong University Joint Institute Shanghai Jiao Tong University Shanghai 200240 China State Key Laboratory of Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective Technologies Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo Zhejiang 315201 China College of Nanoscale Science and Engineering State University of New York New York NY 12203 USA Department of Engineering University of Cambridge Cambridge CB3 0FA UK Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA

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Novel materials solutions and simulations for nanoelectromechanical switches

Novel materials solutions and simulations for nanoelectromec...

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IEEE Holm Conference on Electrical Contacts

作者： Frank Streller Graham E. Wabiszewski Daniel B. Durham Fan Yang Jing Yang Yubo Qi David J. Srolovitz Andrew M. Rappe Robert W. Carpick Department of Materials Science and Engineering University of Pennsylvania Philadelphia USA Department of Mechanical Engineering and Applied Mechanics University of Pennsylvania Philadelphia USA Department of Chemistry University of Pennsylvania Philadelphia USA

Nanoelectromechanical (NEM) switches are a candidate to replace solid-state transistors due to their low power consumption. However, the reliability of the contact interface limits the commercialization of NEM switches, since for practical purposes, the electrical contact should be able to physically open and close up to a quadrillion (10 15 ) times without failing due to adhesion (by sticking shut) or contamination (reducing switch conductivity). These failure mechanisms are not well understood, and materials that exhibit the needed performance have not yet been demonstrated. This study presents the development of platinum silicide (Pt x Si) as a promising NEM switch contact material. Using controlled solid-state diffusion of thin films of amorphous silicon and platinum, Pt x Si was formed over a range of stoichiometries (1≤x≤3). The platinum-rich silicide phase (Pt 3 Si) may be a particularly ideal contact material for NEM switches due to its combination of mechanical robustness with metal-like conductivity. We then present a novel, high-throughput contact material screening method for NEM contact materials based on atomic force microscopy (AFM) that enables billions of contact cycles in laboratory timeframes for arbitrary material pairs. Self-mated Pt contacts showed more than three orders-of-magnitude increase in contact resistance after 2·109 cycles due to the growth of insulating tribopolymer. Finally, we present density functional theory (DFT) and molecular dynamics (MD) based studies to understand tribopolymer formation and growth. These calculations show that irreversible stress-induced polymerization processes are strongly affected by the ability of the molecule to displace laterally. Additionally, lower interaction energies between the model organic molecules and the Pt x Si surface compared to Pt are found. This combination of experimental and theoretical methods in the framework of a materials genome effort aims to ultimately lead to accelerated discove

关键词： Silicides Contact resistance Electrical resistance measurement Adhesives Films Current measurement

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Corrigendum to “The effects of TiC grain size and steel binder content on the reciprocating wear behaviour of TiC-316L stainless steel cermets” [Wear 350–351 (2016) 116–129]

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Wear 2016年 356-357卷 158-158页

作者： Chukwuma C. Onuoha Chenxin Jin Zoheir N. Farhat Georges J. Kipouros Kevin P. Plucknett Dalhousie University 1360 Barrington Street Materials Engineering Program Department of Process Engineering and Applied Science Nova Scotia Canada B3H 4R2

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Molecular kinetic theory of boundary slip on textured surfaces by molecular dynamics simulations

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science China(Physics,mechanics & Astronomy) 2014年第11期57卷 2152-2160页

作者： WANG LiYa WANG FengChao YANG FuQian WU HengAn CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsUniversity of Science and Technology of China Materials Program Department of Chemical and Materials EngineeringUniversity of Kentucky

A theoretical model extended from the Frenkel-Eyring molecular kinetic theory(MKT)was applied to describe the boundary slip on textured *** concept of the equivalent depth of potential well was adopted to characterize the solid-liquid interactions on the textured *** slip behaviors on both chemically and topographically textured surfaces were investigated using molecular dynamics(MD)*** extended MKT slip model is validated by our MD simulations under various situations,by constructing different complex surfaces and varying the surface wettability as well as the shear stress exerted on the *** slip model can provide more comprehensive understanding of the liquid flow on atomic scale by considering the influence of the solid-liquid interactions and the applied shear stress on the ***,the slip velocity shear-rate dependence can be predicted using this slip model,since the nonlinear increase of the slip velocity under high shear stress can be approximated by a hyperbolic sine function.

关键词： constructing validated chemically zigzag considering hyperbolic fitting rectangular fitted Frenkel

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van der Waals bilayer energetics: Generalized stacking-fault energy of graphene, boron nitride, and graphene/boron nitride bilayers

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Physical Review B 2015年第15期92卷 155438-155438页

作者： Songsong Zhou Jian Han Shuyang Dai Jianwei Sun David J. Srolovitz Department of Materials Science and Engineering University of Pennsylvania Philadelphia Pennsylvania 19104 USA Department of Physics Temple University Philadelphia Pennsylvania 19122 USA Department of Mechanical Engineering and Applied Mechanics University of Pennsylvania Philadelphia Pennsylvania 19104 USA

The structure, thermodynamics, and band gaps in graphene/graphene, boron nitride/boron nitride, and graphene/boron nitride bilayers are determined using several different corrections to first-principles approaches to account for the dispersion interactions. While the density functional dispersion correction, van der Waals density functional, meta–generalized gradient approximation, and adiabatic fluctuation-dissipation theorem methods (ACFDT-RPA) all lead to qualitatively similar predictions, the best accuracy is obtained through the application of the computationally expensive ACFDT-RPA method. We present an accurate ACFDT-RPA-based method to determine bilayer structure, generalized stacking-fault energy (GSFE), and band gaps as a function of the relative translation states of the two layers. The GSFE data clearly identify all of the stable and metastable bilayer translations as well as the barriers between them. This is key for predicting the sliding, formation, and adhesion energies for homo- and hetero-bilayers, as well as for the determination of defects in such multilayer van der Waals systems. These, in turn, provide an accurate approach for determining and manipulating the spatial variation of electronic structure.

关键词： STACKING faults (Crystals) VAN der Waals forces BILAYERS (Solid state physics) GRAPHENE BORON nitride DENSITY functional theory

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Erratum to: Journal of the Korean Physical Society, Vol. 71, No. 10

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Journal of the Korean Physical Society 2017年第12期71卷 1075-1075页

作者： Shin, Dong Hee Heo, Jin Hyuck Im, Sang Hyuk Lee, Rena Kim, Kyubo Cho, Samju Lim, Sangwook Lee, Suk Shim, Jang Bo Huh, Hyun Do Lee, Sang Hoon Ahn, Sohyun Nobi, Ashadun Lee, Jae Woo Lim, Hyunwoo Lee, Hunwoo Cho, Hyosung Seo, Changwoo Je, Uikyu Park, Chulkyu Kim, Kyuseok Kim, Guna Park, Soyoung Lee, Dongyeon Kang, Seokyoon Lee, Minsik Cao, Jingtai Zhao, Xiaohui Li, Zhaokun Liu, Wei Gu, Haijun Kang, In Ho Na, Moon Kyong Seok, Ogyun Moon, Jeong Hyun Kim, H. W. Kim, Sang Cheol Bahng, Wook Kim, Nam Kyun Park, Him-Chan Yang, Chang Heon Kim, Kyungil Kim, Youngman Lee, Kang Seog Hong, Yoo-Seung Cho, Chun-Hyung Sung, Hyuk-Kee Hyun, June-Won Kim, Gang Bae Lee, Ju Ho Kim, Yeon Jung Hwang, Seungjin Jeong, Jihoon Cho, Seryeyohan Lee, Jongmin Yu, Tae Jun Lee, Kang Il Lee, Geon Joon Park, Gyungsoon Choi, Eun Ha Kim, Dong-Hwan Jeong, Jun-Seok Eom, Su-Keun Lee, Jae-Gil Seo, Kwang-Seok Cha, Ho-Young Ko, Young Joon Kim, Hyun Soo Jung, Jong Hoon Jeong, Inho Song, Hyunwook Lee, B. C. Jang, Hyunchul Kim, Byongju Koo, Sangmo Park, Seran Ko, Dae-Hong Ahn, Kwang Jun Cho, Sungwan Kim, Sang Goon Hong, Kimin Shim, Seung-Bo Jo, Myunglae Cho, Sung Un Park, Yun Daniel Kim, Hee-Cheol Kim, Seok Department of Chemical and Biological Engineering Korea University Seoul Korea Department of radiation Oncology College of Medicine Ewha Womans University Seoul Korea Department of Radiation Oncology Kosin University College of Medicine Busan Korea Department of Radiation Oncology College of Medicine Korea University Seoul Korea Department of Radiation Oncology Inha University Hospital Incheon Korea Department of Radiation Oncology Cheil General Hospital & Women’s Heathcare Center Seoul Korea Department of Radiation Oncology College of Medicine Yonsei University Seoul Korea Department of Computer Science and Telecommunication Engineering Noakhali Science and Technology University Noakhali Bangladesh Department of Physics Inha University Incheon Korea Department of Radiation Convergence Engineering Yonsei University Wonju Korea Department of Radiation Oncology University of Maryland School of Medicine Baltimore USA College of communication Engineering Jilin University Jilin China Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun China College of Geoexploration Science and Technology Jilin University Jilin China Power Semiconductor Research Center Korea Electrotechnology Research Institute (KERI) Changwon Korea Department of Electrical Engineering Kyungnam University Changwon Korea R&D team Maple Semiconductors. Inc. Pohang Korea Rare Isotope Science Project Institute for Basic Science Daejeon Korea Department of Physics Chonnam National University Gwangju Korea School of Electronic and Electrical Engineering Hongik University Seoul Korea Department of Electronic & Electrical Engineering College of Science and Technology Hongik University Sejong Korea Department of Physics Dankook University Cheonan Korea Center for Innovative Engineering Education Dankook University Yongin Korea Department of Advanced Green Energy and Environment Handong Global University Pohang Korea Global Institute of Laser T

Regrettably, due to a technical error during the production process, there were discrepancies in DOI of the mentioned articles between HTML and PDF files. The DOIs are correct in the PDF files but were incorrect in HTML. The original articles have been corrected. The Publisher apologizes for any inconvenience and confusion caused.

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Flexible Electronics: Theoretical and Experimental Studies of Epidermal Heat Flux Sensors for Measurements of Core Body Temperature (Adv. Healthcare Mater. 1/2016)

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Advanced healthcare materials 2016年第1期5卷 2页

作者： Yihui Zhang Richard Chad Webb Hongying Luo Yeguang Xue Jonas Kurniawan Nam Heon Cho Siddharth Krishnan Yuhang Li Yonggang Huang John A Rogers Departments of Civil and Environmental Engineeringand Mechanical Engineering Center for Engineering and Healthand Skin Disease Research Center Northwestern University Evanston IL 60208 USA. Center for Mechanics and Materials Tsinghua University Beijing 100084 China. Department of Materials Science and Engineering Frederick Seitz Materials Research Laboratory University of Illinois at Urbana-Champaign Urbana IL 61801 USA. School of Aerospace Engineering and Applied Mechanics Tongji University Shanghai 200092 China. Institute of Solid Mechanics Beihang University Beijing 100191 China. Department of Materials Science and Engineering Chemistry Mechanical Science and Engineering Electrical and Computer Engineering Beckman Institute for Advanced Science and Technology and Frederick Seitz Materials Research Laboratory University of Illinois at Urbana-Champaign Urbana IL 61801 USA.

On page 119, J. A. Rogers and co-workers present theoretical approaches, modeling algorithms, materials, and device designs for the noninvasive measurement of core body temperature by using multiple differential temperature sensors that attach softly and intimately onto the surface of the skin. The image shows the construction of differential temperature sensors using thermally insulating foam as the separation material.

关键词： core body temperature flexible electronics heat flux modeling stretchable electronics

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