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Synthesis and Device Applications of High-Density Aligned Carbon Nanotubes Using Low-Pressure Chemical Vapor Deposition and Stacked Multiple Transfer

Chuan Wang, Koungmin Ryu, Lewis Gomez De Arco, Alexander Badmaev, Jialu Zhang, Xue Lin, Yuchi Che, and Chongwu Zhou()
Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, USA

DOI 10.1007/s12274-010-0054-0

Nano Res. 2010, 3(12): 831每842

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Low-pressure chemical vapor deposition and stacked multiple transfer techniques have been developed to achieve high-density aligned carbon nanotubes and high-performance submicron nanotube field- effect transistors have been further demonstrated. This platform holds great potential for high performance nanoelectronics and analog/RF applications.


Selective Synthesis of Hexagonal Ag Nanoplates in a Solution-Phase Chemical Reduction Process

Mingzhu Liu1,2, Mei Leng1,2, Chao Yu1,2, Xin Wang3, and Cheng Wang1()
1 State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
2 Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China
3 Division of Chemical and Biomolecular Engineering, Nanyang Technological University, 637722, Singapore

DOI 10.1007/s12274-010-0055-z

Nano Res. 2010, 3(12): 843每851

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Size-tunable hexagonal Ag nanoplates have been synthesized by etching and re-depositing Ag atoms of triangular nanoplates.


Preparation and Control of the Formation of Single Core and Clustered Nanoparticles for Biomedical Applications Using a Versatile Amphiphilic Diblock Copolymer

Hongwei Chen1, Julie Yeh1, Liya Wang1, Hafsa Khurshid2, Nan Peng1, 3, Andrew Y. Wang4, and Hui Mao1()
1 Department of Radiology, Center for Systems Imaging, Emory University School of Medicine, Atlanta, Georgia 30322, USA
2 Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
3 Department of Rehabilitation Medicine, Chinese PLA General Hospital, 28 Fuxing Road, Beijing 100853, China
4 Ocean NanoTech, LLC, 2143 Worth Lane, Springdale, Arkansas 72764, USA

DOI 10.1007/s12274-010-0056-y

Nano Res. 2010, 3(12): 852每862

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Water-soluble monodisperse single core nanocrystals (e.g., iron oxide nanoparticles and semiconductor quantum dots) as well as magnetic每optical hybrid nanoparticles have been synthesized using the amphiphilic copolymer poly(ethylene oxide)-b-poly (-methacryl- oxypropyltrimethoxysilane) (PEO-b-PMPS) by enhancing ligand exchange through aging. Multi-core clustered nanoparticles have been generated using the same copolymer by minimizing the ligand exchange by not aging. The resulting multi-core clustered nano- particles exhibit enhanced magnetic and optical properties, and have greater capacities for biomedical applications.


Ag2Se Complex Nanostructures with Photocatalytic Activity and Superhydrophobicity

Huaqiang Cao1(), Yujiang Xiao1,2, Yuexiang Lu1, Jiefu Yin1, Baojun Li1, Shuisheng Wu1,3, and Xiaoming Wu1,4
1 Department of Chemistry, Tsinghua University, Beijing 100084, China
2 School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
3 College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
4 School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

DOI 10.1007/s12274-010-0057-x

Nano Res. 2010, 3(12): 863每873

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Asingle-crystalline plate-like Ag2Se complex nanostructure has been successfully synthesized via a solvothermal route and shown to possess superhydrophobicity and photocatalytic activity.


Atomically Smooth Ultrathin Films of Topological Insulator Sb2Te3

Guang Wang1, Xiegang Zhu1, Jing Wen1, Xi Chen1, Ke He2, Lili Wang2, Xucun Ma2, Ying Liu3, 4, 5, Xi Dai2, Zhong Fang2, Jinfeng Jia1, 4 (), and Qikun Xue1, 2
1 Key Lab for Atomic, Molecular and Nanoscience, Department of Physics, Tsinghua University, Beijing 100084, China
2 Institute of Physics, the Chinese Academy of Sciences, Beijing 100190, China
3 Department of Physics, The Pennsylvania State University, Pennsylvania 16802, USA
4 Department of Physics, Shanghai Jiaotong University, Shanghai 200240, China
5 Department of Physics, Zhejiang University, Hangzhou, China

DOI 10.1007/s12274-010-0060-2

Nano Res. 2010, 3(12): 874每880

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Using in situ scanning tunneling microscopy (STM) and angle- resolved photoemission spectroscopy (ARPES), we show that ultrathin Sb2Te3 films grown layer-by-layer by molecular beam epitaxy (MBE) on Si(111) are atomically smooth, single-crystalline topological insulators.


Statistical Analysis of Excitonic Transitions in Single, Free- Standing GaN Nanowires: Probing Impurity Incorporation in the Poissonian Limit

Carsten Pf邦ller(), Oliver Brandt, Timur Flissikowski, Caroline Ch豕ze, Lutz Geelhaar, Holger T. Grahn, and Henning Riechert
Paul-Drude-Institut f邦r Festkörperelektronik, 5每7 Hausvogteiplatz, Berlin 10117, Germany

DOI 10.1007/s12274-010-0061-1

Nano Res. 2010, 3(12): 881每888

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The quantitative analysis of low temperature micro-photoluminescence spectra of around 100 nanowires reveals that each nanowire exhibits its own individual spectrum. A significant fraction of nanowires exclusively emits at energies corresponding to either surface- donor-bound or free excitons, demonstrating that optical properties of individual nanowires are determined by the presence and location of a few impurity atoms alone.


Micropatterning of Superhydrophobic Silicone Nanofilaments by a Near-Ultraviolet Nd:YAG Laser

Ana Stojanovic, Georg R. J. Artus, and Stefan Seeger ()
Institute of Physical Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Z邦rich, Switzerland

DOI 10.1007/s12274-010-0062-0

Nano Res. 2010, 3(12): 889每894

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Direct laser patterning of superhydrophobic silicone nanofilaments is investigated. Processing with a focused laser beam at 355 nm allows selective removal of the coating which leads to contrasting wettabilities of the substrate.


A Facile Method to Improve the High Rate Capability of Co3O4 Nanowire Array Electrodes

Hua Cheng1,2, Zhou Guang Lu1,2, Jian Qiu Deng1, C. Y. Chung1, Kaili Zhang3, and Yang Yang Li1()
1 Department of Physics and Materials Science, City University of Hong Kong, HKSAR, China
2 School of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
3 Department of Manufacturing Engineering and Engineering Management, City University of Hong Kong, HKSAR, China

DOI 10.1007/s12274-010-0063-z

Nano Res. 2010, 3(12): 895每901

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High capacity and remarkable rate capability can be achieved with Co3O4 nanowire array electrodes by uniformly loading Ag nanoparticles onto the surfaces of the Co3O4 nanowires via the silver-mirror reaction.


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