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Sensitization of Hydrothermally Grown Single Crystalline TiO2 Nanowire Array with CdSeS Nanocrystals for Photovoltaic Applications

Akshay Kumar, Kuan-teh Li, Anuj R. Madaria, and Chongwu Zhou ()


Department of Electrical Engineering and Center for Energy Nanoscience and Technology, University of Southern California, Los Angeles, CA 90089, USA

DOI 10.1007/s12274-011-0168-z

2011, 4(12): 1181每1190

Address correspondence to chongwuz@usc.edu

Schematic diagram of the photovoltaic device with vertically aligned nanowires sensitized with nanocrystals. Typical l characteristic of the solar cell.

    

Modeling Frequency- and Temperature-Invariant Dissipative Behaviors of Randomly Entangled Carbon Nanotube Networks under Cyclic Loading

Xiaodong Yang1,2, Pengfei He1, and Huajian Gao2 ()
 
1 School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
2 School of Engineering, Brown University, Providence, RI 02912, USA

DOI 10.1007/s12274-011-0169-y

2011, 4(12): 1191每1198

Address correspondence to huajian_gao@brown.edu

Van der Waals force-mediated unstable attachment and detachment events give rise to temperature- and frequency-invariant dissipative behaviors in a carbon nanotube network.

    

An Electrochemically Assisted Mechanically Controllable Break Junction Approach for Single Molecule Junction Conductance Measurements

Yang Yang1, Zhaobin Chen1, Junyang Liu1, Miao Lu2, Dezhi Yang1, Fangzu Yang1, and Zhongqun Tian1 ()


1 State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
2 Micro-Electro-Mechanical Systems Research Center, Pen-Tung Sah Micro-Nano Technology Institute, Xiamen University, Xiamen 361005, China

DOI 10.1007/s12274-011-0170-5

2011, 4(12): 1199每1207

Address correspondence to zqtian@xmu.edu.cn

We reported an electrochemically assisted Mechanically Controllable Break Junction approach to investigate single molecule junction conductance. Two probe molecules, benzene-1,4-dithiol and 4,4'-bipyridine were used to test the feasibility of our method.

    

Synthesis of Large-Area, Few-Layer Graphene on Iron Foil by Chemical Vapor Deposition

Yunzhou Xue, Bin Wu, Yunlong Guo, Liping Huang, Lang Jiang, Jianyi Chen, Dechao Geng, Yunqi Liu1 (), Wenping Hu, and Gui Yu
 
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

DOI 10.1007/s12274-011-0171-4

2011, 4(12): 1208每1214

Address correspondence to liuyq@iccas.ac.cn

We demonstrate a simple and controllable way to synthesize largearea, few-layer graphene on iron substrates by an optimized chemical vapor deposition method using a mixture of methane and hydrogen. An appropriate temperature and cooling process were found to be very important in the synthesis of highly crystalline few-layer graphene. The resulting materials were used to fabricate field-effect transistor devices.

    

Fabrication of Silver Nanowire Transparent Electrodes at Room Temperature

Takehiro Tokuno, Masaya Nogi (), Makoto Karakawa, Jinting Jiu, Thi Thi Nge, Yoshio Aso, and Katsuaki Suganuma


The Institute of Scientific and Industrial Research (ISIR), Osaka University, 8每1 Mihogaoka, Ibaraki, Osaka 567每0047, Japan

DOI 10.1007/s12274-011-0172-3

2011, 4(12): 1215每1222

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

Silver nanowire transparent electrodes with low sheet resistance and low surface roughness have been fabricated by mechanical pressing after rinsing at room temperature. This technique makes it possible to fabricate silver nanowire transparent electrodes on heat-sensitive plastic substrates.

    

Effective Approach for the Synthesis of Monodisperse Magnetic Nanocrystals and M每Fe3O4 (M = Ag, Au, Pt, Pd) Heterostructures

Fang-hsin Lin1, Wei Chen2, Yu-Hsiang Liao,1 Reuy-an Doong1 (), and Yadong Li2 ()
 
1 101, Sec. 2, Kuang Fu Road, Department of Biomedical Engineering and Environmental Sciences, Tsing Hua University, Hsinchu 30013
2 Department of Chemistry and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084

DOI 10.1007/s12274-011-0173-2

2011, 4(12): 1223每1232

Address correspondence to Reuy-an Doong, radoong@mx.nthu.edu.tw; Yadong Li, ydli@tsinghua.edu.cn

Monodisperse Fe3O4 nanoparticles and M每Fe3O4 (M = Au, Ag, Pt, Pd) heterostructures have been fabricated by a thermal decomposition method using an iron oleate complex as a precursor. This method provides a way of achieving size tunability and monodispersity, and the resulting particles show excellent magnetic and optical properties which open the door for biomedical and environmental applications.

    

One-Step Synthesis of Magnetically Recyclable Au/Co/Fe Triple-Layered Core每Shell Nanoparticles as Highly Efficient Catalysts for the Hydrolytic Dehydrogenation of Ammonia Borane

Kengo Aranishi1,2, Hai-Long Jiang1, Tomoki Akita1,4, Masatake Haruta3,4, and Qiang Xu1,2,4 ()


1 National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan
2 Graduate School of Engineering, Kobe University, Nada Ku, Kobe, Hyogo 657-8501, Japan
3 Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
4 Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan

DOI 10.1007/s12274-011-0174-1

2011, 4(12): 1233每1241

Address correspondence to q.xu@aist.go.jp

Magnetically recyclable Au/Co/Fe triple-layered core每shell nanoparticles (NPs) around 10 nm in diameter have been successfully synthesized via a one-step in situ reduction procedure. The catalytic activity of Au/Co/Fe NPs for the hydrolytic dehydrogenation of ammonia borane is much higher than those of corresponding monometallic or bimetallic NPs.

    

Chemical Versus Thermal Folding of Graphene Edges

Ninghai Su, Miao Liu, and Feng Liu ()
 
Department of Materials Science and Engineering, University of Utah, Salt Lake City, UT 84112, USA

DOI 10.1007/s12274-011-0175-0

2011, 4(12): 1242每1247

Address correspondence to fliu@eng.utah.edu

The kinetics of the graphene edge folding process have been investigated using molecular dynamics (MD) simulations. The energy diagram of a single-layer graphene edge folding process shows the initial, transition and final state energies, where the bottom left and the right figure show the initial and the final (with the folded edge) atomic structure, respectively.

    

Multifunctional FeCo每Graphitic Carbon Nanocrystals for Combined Imaging, Drug Delivery and Tumor-Specific Photothermal Therapy in Mice

Sarah P. Sherlock and Hongjie Dai ()
Department of Chemistry, Stanford University, Stanford, CA 94305, USA

DOI 10.1007/s12274-011-0176-z

2011, 4(12): 1248每1260

Address correspondence to hdai1@stanford.edu

Multifunctional FeCo每graphitic carbon nanocrystals have been used for drug delivery, in vivo imaging and tumor-selective nearinfrared photothermal therapy. The therapeutic system provides a highly effective treatment of 4T1 tumors in mice.

    

Surface Dislocation Nucleation Mediated Deformation and Ultrahigh Strength in Sub-10-nm Gold Nanowires

Yang Lu1,†, Jun Song2, Jian Yu Huang3, and Jun Lou1 ()
 
1 Department of Mechanical Engineering & Materials Science, Rice University, Houston, TX 77005, USA
2 Department of Mining & Materials Engineering, McGill University, Montreal, QC H3A 2B2, Canada
3 Center for Integrated Nanotechnologies (CINT), Sandia National Laboratories, Albuquerque, NM 87185, USA
 Present address: Department of Materials Science and Engineering, MIT, Cambridge, MA 02139, USA

DOI 10.1007/s12274-011-0177-y

2011, 4(12): 1261每1267

Address correspondence to jlou@rice.edu

High-resolution transmission electron microscopy shows a surface dislocation slip for a <111> single crystalline gold nanowire (diameter ~6 nm) under tensile deformation, which was subsequently confirmed by molecular dynamics simulations.

    

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