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Real Time In Situ Spectroscopic Ellipsometry of the Growth and Plasmonic Properties of Au Nanoparticles on SiO2

H. T. Beyene1,2,†,, J. W. Weber2,, M. A. Verheijen2, M. C. M. van de Sanden2,3, and M. Creatore2 ()
1 Materials innovation institute (M2i), P.O. Box 5008, Mekelweg 2, 2600 GA Delft, The Netherlands
2 Eindhoven University of Technology, Department of Applied Physics, Group plasma and materials processing, P.O. Box 513, Den Dolech 2, 5600 MB Eindhoven, The Netherlands
3 Dutch Institute for Fundamental Energy Research (DIFFER), P.O Box 1207, Edisonbaan 14, 3430 BE Nieuwegein, The Netherlands
 Present address: Oled Technologies and Solutions, Jan Campertstraat 7a, 6416 SG Heerlen, The Netherlands
∫ These authors contributed equally to this work.

DOI 10.1007/s12274-012-0236-z

Nano Res. 2012, 5(8): 513每520

Address correspondence to m.creatore@tue.nl

In situ spectroscopic ellipsometry using a B-spline model to monitor the real time evolution of thickness and the plasmonic properties of Au nanoparticles on a SiO2/c-Si substrate are reported.

    

Co3O4 Nanocrystals on Single-Walled Carbon Nanotubes as a Highly Efficient Oxygen-Evolving Catalyst

Jian Wu1, Yan Xue1, Xin Yan1, Wensheng Yan2, Qingmei Cheng1, and Yi Xie1 ()


1 Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui 230026, China
2 National Synchrotron Radiation Laboratory, University of Science & Technology of China, Hefei, Anhui 230029, China

DOI 10.1007/s12274-012-0237-y

Nano Res. 2012, 5(8): 521每530

Address correspondence to yxie@ustc.edu.cn

A hybrid consisting of Co3O4 nanocrystals supported on single- walled carbon nanotubes (SWNTs) has been fabricated via a simple self-assembly approach. A Co3O4/SWNTs hybrid electrode exhibits high catalytic activity as well as excellent stability for the oxygen evolution reaction under neutral and alkaline conditions.

    

Ultrasmall Fluorescent Silver Nanoclusters: Protein Adsorption and Its Effects on Cellular Responses

Li Shang1, Ren谷 M. Dörlich1, Vanessa Trouillet2, Michael Bruns2, and G. Ulrich Nienhaus1,3 ()
 
Institute of Applied Physics and Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), Wolfgang- Gaede-Strasse 1, 76131 Karlsruhe, Germany
2 Institute of Materials Research III, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Karlsruhe, Germany
3 Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA

DOI 10.1007/s12274-012-0238-x

Nano Res. 2012, 5(8): 531每542

Address correspondence to uli.nienhaus@kit.edu

Effects of protein binding to ultrasmall fluorescent silver nanoclusters (AgNCs) have been investigated by using human serum albumin as a model protein, and the resulting cellular responses, have also been explored.

    

Sequential Assembly of Metal-Free Phthalocyanine on Few-Layer Epitaxial Graphene Mediated by Thickness-Dependent Surface Potential

Yabo Gao1, Yanfeng Zhang1 (), Jun Ren2, Denghua Li3, Teng Gao1, Ruiqi Zhao1, Yanlian Yang3, Sheng Meng2, Chen Wang3, and Zhongfan Liu1 ()


1 Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
3 National Center for Nanoscience and Technology, Beijing 100190, China

DOI 10.1007/s12274-012-0239-9

Nano Res. 2012, 5(8): 543每549

Address correspondence to Yanfeng Zhang, yanfengzhang@pku.edu.cn; Zhongfan Liu, zfliu@pku.edu.cn

We report a quantitative detection of the charge properties of few- layer graphene by surface potential measurements using electrostatic force microscopy (EFM). A minor difference in surface potential is observed to mediate a sequential assembly of metal-free phthalocyanine (H2Pc) on monolayer, bilayer and trilayer graphenes, as demonstrated by scanning tunneling microscopy (STM). This abnormal assembly behavior is further investigated by density functional theory (DFT) calculations.

    

Mechanical Properties of Freely Suspended Atomically Thin Dielectric Layers of Mica

Andres Castellanos-Gomez1,2 (), Menno Poot1,3, Albert Amor-Amor車s2, Gary A. Steele1, Herre S.J. van der Zant1, Nicol芍s Agraït2,4, and Gabino Rubio-Bollinger2 ()
 
Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
Departamento de F赤sica de la Materia Condensada, Universidad Aut車noma de Madrid, Campus de Cantoblanco, E-28049 Madrid, Spain
3 Department of Engineering Science, Yale University, Becton 215, 15 Prospect St., New Haven, CT 06520, USA
4 Instituto Madrileño de Estudios Avanzados en Nanociencia IMDEA-Nanociencia, E-28049 Madrid, Spain

DOI 10.1007/s12274-012-0240-3

Nano Res. 2012, 5(8): 550每557

Address correspondence to Andres Castellanos-Gomez, a.castellanosgomez@tudelft.nl; Gabino Rubio-Bollinger, gabino.rubio@uam.es

Using an atomic force microscope, we have studied the deformation of atomically thin sheets (2 to 14 layers) of muscovite mica to determine whether or not they are suitable for future flexible electronic applications. Ultrathin mica shows low pre-tension, high Young's modulus (190 GPa) and withstands large deformations without breaking which allows their use in applications requiring flexible dielectric materials.

    

Synthesis of a Lithium-Encapsulated Fullerenol and the Effect of the Internal Lithium Cation on Its Aggregation Behavior

Hiroshi Ueno, Yuji Nakamura, Naohiko Ikuma, Ken Kokubo (), and Takumi Oshima


Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Sui
ta, Osaka 565-0871, Japan

DOI 10.1007/s12274-012-0241-2

Nano Res. 2012, 5(8): 558每564

Address correspondence to kokubo@chem.eng.osaka-u.ac.jp

The lithium-encapsulated fullerenol Li@C60(OH)18 has been synthesized, as clearly evidenced by 7Li NMR spectroscopy. The more anionic surface of Li@C60(OH)18 induced by the inner lithium cation, as compared with that of empty C60(OH)16, resulted in a high degree of dispersal in polar solvents, and thus the molecule (with a diameter of ca. 1.5 nm) can be described as a ※cation-encapsulated anion nanoparticle§.

    

Nanogratings of Fibronectin Provide an Effective Biochemical Cue for Regulating Focal Adhesion and Cellular Structure

Lifang Shi1, Jie-Ren Li1, Yi-Ping Shih2, Su Hao Lo2, and Gang-yu Liu1 ()
 
1 Department of Chemistry, University of California, Davis, California 95616, USA
2 Department of Biochemistry and Molecular Medicine, Center for Tissue Regeneration and Repair, University of California, Davis, Sacramento, California 95817, USA

DOI 10.1007/s12274-012-0242-1

Nano Res. 2012, 5(8): 565每575

Address correspondence to liu@chem.ucdavis.edu

Fibronectin nanogratings exhibit high efficacy in templating cellular orientation and polarization, as well as intracellular structures such as preferential filopodia attachment, and spatial arrangement of intracellular actin stress fibers.

    

A Novel Sn2Sb2O7 Nanophotocatalyst for Visible-Light-Driven H2 Evolution

Jinwen Shi, Lijing Ma, Po Wu, Zhaohui Zhou, Penghui Guo, Shaohua Shen, Dengwei Jing, and Liejin Guo ()


28 West Xianning Road, International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power
Engineering (MFPE), Xi*an Jiaotong University (XJTU), Xi*an 710049, China

DOI 10.1007/s12274-012-0243-0

Nano Res. 2012, 5(8): 576每583

Address correspondence to lj-guo@mail.xjtu.edu.cn

A novel cubic-phase pyrochlore structure tin(j) antimonate nano- photocatalyst, stoichiometric Sn2Sb2O7, has been prepared by a modified ion-exchange process using an antimonic acid precursor, and was validated as a promising candidate for visible-light-driven H2 evolution for the first time.

    

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