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Carrier dynamics and doping profiles in GaAs nanosheets

Chia-Chi Chang1,2, Chun-Yung Chi2,3, Chun-Chung Chen2,3, Ningfeng Huang2,3, Shermin Arab2,3, Jing Qiu4, Michelle L. Povinelli2,3, P. Daniel Dapkus2,3, and Stephen B. Cronin1,2,3 ()


1 Department of Physics, 2 Center for Energy Nanoscience, 3 Department of Electrical Engineering, 4 Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089, USA

DOI 10.1007/s12274-013-0383-x

Nano Research 2014, 7(2): 163每170

Address correspondence to scronin@usc.edu

EBIC mapping reveals a p每n junction formed in MOCVD grown GaAs nanosheets. Low temperature photoluminescence spectroscopy and Hall effect measurements are used to determine the carrier concentration of each region in the nanosheets to be 1 ℅ 1018 cm每3.

    

Negative supracrystals inducing a FCC每BCC transition in gold nanocrystal superlattices

Nicolas Goubet1,2, and Marie-Paule Pileni1,2 ()


1 Universit谷 Pierre et Marie Curie Paris 6, UMR 7070, LM2N, BP 52, 4 place Jussieu, 75005 Paris, France
2 Centre National de la Recherche Scientifique, Unit谷 Mixte de Recherche 7070, LM2N, 4 place Jussieu, 75005 Paris, France

DOI 10.1007/s12274-013-0384-9

Nano Research 2014, 7(2): 171每179

Address correspondence to marie-paule.pileni@upmc.fr

Negative supracrystals have been observed in a face-centered cubic gold nanocrystal superlattice. The presence of these volumetric defects induces anisotropic diffusion of thiol molecules through the nanocrystal lattice and thus Bain deformation of the latter.

    

Piezoresistive effect in MoO3 nanobelts and its application in strain-enhanced oxygen sensors

Xiaonan Wen1, Weiqing Yang1,2, Yong Ding1, Simiao Niu1, and Zhong Lin Wang1,3 ()


1 School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
2 State Key Laboratory of Electronic Thin films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
3 Satellite Lab., MANA, WPI, National Institute of Materials Science, Japan

DOI 10.1007/s12274-013-0385-8

Nano Research 2014, 7(2): 180每189

Address correspondence to zlwang@gatech.edu

This study provides the first demonstration of significant piezoresistivity in MoO3 NBs and the first illustration of a generic mechanism how this effect could be coupled with other electronic modulation measures for better device performance and broader material functionality.

    

Functional nanogenerators as vibration sensors enhanced by piezotronic effects

Zheng Zhang1,∫, Qingliang Liao1,∫, Xiaoqin Yan1, Zhong Lin Wang2,3, Wenduo Wang1, Xu Sun1, Pei Lin1, Yunhua Huang1, and Yue Zhang1,4 ()


1 State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
2 School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
3 Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China
4 Key Laboratory of New Energy Materials and Technologies, University of Science and Technology Beijing, Beijing 100083, China
These two authors contributed equally to this work.

DOI 10.1007/s12274-013-0386-7

Nano Research 2014, 7(2): 190每198

Address correspondence to yuezhang@ustb.edu.cn

We report a new type of functional nanogenerator which can be operated in self-powered and external-powered modes to detect vibration. When used as a vibration sensor, the nanogenerator can be improved significantly by external-powering.

    

Porous CuO nanowires as the anode of rechargeable Na-ion batteries

Lijiang Wang∫, Kai Zhang∫, Zhe Hu, Wenchao Duan, Fangyi Cheng, and Jun Chen ()


Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Chemistry College, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China

DOI 10.1007/s12274-013-0387-6

Nano Research 2014, 7(2): 199每208

Address correspondence to chenabc@nankai.edu.cn

Porous CuO nanowires have been explored as the anode material of rechargeable Na-ion batteries, showing a discharge capacity of 640 mA•h•g每1 in the first cycle and 303 mA•h•g每1 after 50 cycles at 50 mA•g每1. The electrochemical conversion reactions among CuO, Cu1−xCuIxO1−x/2, Cu2O, and Cu have also been demonstrated.

    

Carbon nanotube每polypyrrole core每shell sponge and its application as highly compressible supercapacitor electrode

Peixu Li1, Enzheng Shi2, Yanbing Yang3, Yuanyuan Shang2, Qingyu Peng2, Shiting Wu2, Jinquan Wei4, Kunlin Wang4, Hongwei Zhu4, Quan Yuan3, Anyuan Cao2 (), and Dehai Wu1 ()


1 Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
2 Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
3 Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
4 Key Laboratory for Advanced Materials Processing Technology and School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

DOI 10.1007/s12274-013-0388-5

Nano Research 2014, 7(2): 209每218

Address correspondence to Anyuan Cao, anyuan@pku.edu.cn; Dehai Wu, wdh-dme@tsinghua.edu.cn

Carbon nanotube每PPy core每shell sponges are fabricated by in situ electropolymerization, and serve as high performance and compressible supercapacitor electrodes.

    

Nanocrystal每semiconductor interface: Atomic-resolution cross-sectional transmission electron microscope study of lead sulfide nanocrystal quantum dots on crystalline silicon

Zachary Lingley1, Krishnamurthy Mahalingam2, Siyuan Lu3, Gail J. Brown2, and Anupam Madhukar1,3 ()


1 Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, USA
2 Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433-7707, USA
3 Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089, USA

DOI 10.1007/s12274-013-0389-4

Nano Research 2014, 7(2): 219每227

Address correspondence to madhukar@usc.edu

Simultaneous cross-sectional high resolution transmission electron microscope image of a nanocrystal quantum dot on a silicon nanopillar.

    

Structural and optical verification of residual strain effect in single crystalline CdTe nanowires

Liubing Huang1, Siyuan Lu2, Paichun Chang1, Karan Banerjee1, Robert Hellwarth1, and Jia Grace Lu1 ()


1 Department of Physics and Astronomy, Department of Electrical Engineering, University of Southern California, Los Angeles, CA90089, USA
2 IBM Thomas J. Watson Research Center, 1101 Kitchawan Road, Yorktown Heights, NY 10598, USA

DOI 10.1007/s12274-013-0390-y

Nano Research 2014, 7(2): 228每235

Address correspondence to jialu@usc.edu

To understand the effect of strain common in nanostructures for solar cell applications, single crystalline CdTe nanowires have been synthesized by chemical vapor deposition. They were examined by X-ray diffraction and variable temperature photoluminescence, elucidating the change in the electronic structure that arises from residual strain instead of size confinement.

    

Low haze transparent electrodes and highly conducting air dried films with ultra-long silver nanowires synthesized by one-step polyol method

Teppei Araki1 (), Jinting Jiu2, Masaya Nogi2, Hirotaka Koga2, Shijo Nagao2, Tohru Sugahara2, and Katsuaki
Suganuma2


1 Graduate School of Engineering, Osaka University, Ibaraki, Osaka 567-0047, Japan
2 Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan

DOI 10.1007/s12274-013-0391-x

Nano Research 2014, 7(2): 236每245

Address correspondence to teppei@eco.sanken.osaka-u.ac.jp

Ultra-long silver nanowires (u-long AgNWs) with lengths up to 230 米m have been successfully prepared by a one-step polyol process at a low reaction temperature and a low stirring speed of 110 ∼C and 60 rpm, respectively. Compared to conventional AgNWs with lengths of 10 米m and indium tin oxide, ultra-long AgNW electrodes achieved a low haze of 2.2% with low sheet resistance of 49 次/sq. at an optical transmittance of 96%, and the electrodes also showed a low sheet resistance without post-treatment at room temperature and atmospheric pressure.

    

A versatile cooperative template-directed coating method to synthesize hollow and yolk每shell mesoporous zirconium titanium oxide nanospheres as catalytic reactors

Buyuan Guan, Tao Wang, Shangjing Zeng, Xue Wang, Dong An, Dongmei Wang, Yu Cao, Dingxuan Ma, Yunling Liu, and Qisheng Huo ()


State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, China

DOI 10.1007/s12274-013-0392-9

Nano Research 2014, 7(2): 246每262

Address correspondence to huoqisheng@jlu.edu.cn

Yolk每shell structured mesoporous zirconium titanium oxide spheres containing a Pd yolk exhibit high catalytic activity and recyclability in a one-pot two-step synthesis involving an acid catalyzed step and subsequent catalytic hydrogenation to afford benzimidazole derivatives.

    

Schottky barrier-based silicon nanowire pH sensor with live sensitivity control

Felix M. Zörgiebel1,5, Sebastian Pregl1,5, Lotta Römhildt1, Jörg Opitz3, W. Weber2,5, T. Mikolajick4,5, Larysa Baraban1 (), and Gianaurelio Cuniberti1,5


1 Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden, Germany
2 NaMLab GmbH, 01187 Dresden, Germany
3 Fraunhofer Institute IZFP Dresden, 01109 Dresden, Germany
4 Institute for Semiconductors and Microsystems Technology, TU Dresden, 01187 Dresden, Germany
5 Dresden, Germany, Center for Advancing Electronics Dresden, TU Dresden, 01062 Dresden, Germany

DOI 10.1007/s12274-013-0393-8

Nano Research 2014, 7(2): 263每271

Address correspondence to larysa.baraban@nano.tu-dresden.de

We demonstrate a pH sensor based on ultrasensitive nanosized Schottky junctions formed within bottom-up grown dopant-free arrays of assembled silicon nanowires and present a new measurement concept allowing experiments to be performed in the optimum sensitivity regime.

    

Ladder-like metal oxide nanowires: Synthesis, electrical transport, and enhanced light absorption properties

Bo Liang1,2, Hongtao Huang2, Zhe Liu1,2, Gui Chen2, Gang Yu2, Tao Luo1,2, Lei Liao3, Di Chen2, and Guozhen Shen1 ()


1 State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
2 Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
3 Department of Physics and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan 430074, China

DOI 10.1007/s12274-013-0394-7

Nano Research 2014, 7(2): 272每283

Address correspondence to gzshen@semi.ac.cn

Nanowire-assembled ladder-like structures of transparent metal oxides, such as In2O3, SnO2, ZnO, and Ga2O3 have been synthesized via a chemical vapor deposition method. We discuss the growth mechanism and fabricate transistors and photodetectors on SnO2 ladder-like nanowires and single straight nanowires in order to explore their electrical and optical properties.

    

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