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Cellular Localization, Accumulation and Trafficking of Double-Walled Carbon Nanotubes in Human Prostate Cancer Cells

Vera Neves1,2, Andreas Gerondopoulos1,†, Elena Heister1,2, Carmen Tîlmaciu3, Emmanuel Flahaut3, B. Soula3, S. Ravi P. Silva2, Johnjoe McFadden1, and Helen M. Coley1 ()


1 Faculty of Health and Medical Sciences, University of Surrey, Guildford GU27XH, UK
2 Nanoelectronics Centre, Advanced Technology Institute, University of Surrey, Guildford GU27XH, UK
3 Universit谷 de Toulouse, UPS/INP/CNRS, Institut Carnot CIRIMAT, 118 route de Narbonne, 31062 Toulouse, Cedex 9, France
Present address: Department of Biochemistry, University of Oxford, Oxford OX13QU, UK

DOI 10.1007/s12274-012-0202-9

Nano Res. 2012, 5(4): 223每234

Address correspondence to H.Coley@surrey.ac.uk

Carbon nanotubes (CNT) complexes (RNA-wrapped, oxidized double-walled carbon nanotubes) were endocytosed by capture in clathrin-coated vesicles, as revealed by clear co-localization with both clathrin and transferrin. CNT complexes were also found in early endosomes, which was confirmed by co-localization with early endosome antigen (EEA). CNT complexes were not sorted for recycling back to the cell membrane (via fast recycling endosomes), as co-localization with Rab 4 was not observed. Instead, the overlapping of CNT complexes with both LAMP2 antibody and LysoTracker® marker indicated their sequestration in lysosomes. CNTs were also found within vesicles of the secretory pathway (Rab 11-positive vesicles), which for the first time suggests an exact route for their exocytosis.

    

Effects of tip-nanotube interactions on atomic force microscopy imaging of carbon nanotubes

Rouholla Alizadegan1, Albert D. Liao2,3,4, Feng Xiong2,3,4, Eric Pop2,3,4 (), and K. Jimmy Hsia1,2,5 ()
 
1 Department of Mechanical Science & Engineering, University of Illinois at Urbana-Champaign, Illinois 61801, USA
2 Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Illinois 61801, USA
3 Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Illinois 61801, USA
4 Beckman Institute, University of Illinois at Urbana-Champaign, Illinois 61801, USA
5 Department of Bioengineering, University of Illinois at Urbana-Champaign, Illinois 61801, USA

DOI 10.1007/s12274-012-0203-8

Nano Res. 2012, 5(4): 235每247

Address correspondence to Eric Pop, epop@illinois.edu; K. Jimmy Hsia, kjhsia@illinois.edu

A carbon nanotube has van der Waals interactions with both the substrate it is on and the atomic force microscope (AFM) tip that is used to image it. The deformation due to such interactions affects the measurement of the nanotube dimensions using AFM. The laser in the background represents Raman microscopy measurement of carbon nanotube (CNT) diameter.

    

Theoretical Investigation of the C60/Copper Phthalocyanine Organic Photovoltaic Heterojunction

Jun Ren1,2, Sheng Meng3 (), and Efthimios Kaxiras4
 
1 State Key Laboratory for Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
2 Institut des Mat谷riaux, École Polytechnique F谷d谷rale Lausanne (EPFL), CH-1015, Lausanne, Switzerland
3 Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
4 Department of Physics and School of Engineering and Applied Sciences, Harvard University, Cambridge MA 02138, USA

DOI 10.1007/s12274-012-0204-7

Nano Res. 2012, 5(4): 248每257

Address correspondence to smeng@iphy.ac.cn

The atomic structures and electronic and optical properties of the C60/CuPc heterojunction have been studied. The lying-down configurations facilitate interface charge transfer and yield larger open voltages.

    

Vapour-Phase Graphene Epitaxy at Low Temperatures

Lianchang Zhang1,2, Zhiwen Shi1, Donghua Liu1, Rong Yang1, Dongxia Shi1, and Guangyu Zhang1 ()
 
1 Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
2 Department of Physics, Kunming University, Kunming 650214, China

DOI 10.1007/s12274-012-0205-6

Nano Res. 2012, 5(4): 258每264

Address correspondence to gyzhang@aphy.iphy.ac.cn

Epitaxial growth of graphene, including homo- and hetero-epitaxy on graphite and SiC surfaces at a low temperature, has been accomplished by remote plasma-enhanced chemical vapor deposition. This graphene epitaxy technique provides a new strategy toward large-area and high-quality graphene with controlled layer thickness.

    

Photocatalytic, Recyclable CdS Nanoparticle每Carbon Nanotube Hybrid Sponges

Hongbian Li1†, Xuchun Gui2, Chunyan Ji1, Peixu Li3, Zhen Li3, Luhui Zhang1, Enzheng Shi1, Ke Zhu3, Jinquan Wei3,
Kunlin Wang3, Hongwei Zhu3, Dehai Wu3, and Anyuan Cao1 ()
 
1 Department of Advanced Materials and Nanotechnology, College of Engineering, Peking University, Beijing 100871, China
2 State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
3 Key Laboratory for Advanced Materials Processing Technology and Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
 Present address: National Center for Nanoscience and Technology, Beijing 100190, China

DOI 10.1007/s12274-012-0206-5

Nano Res. 2012, 5(4): 265每271

Address correspondence to anyuan@pku.edu.cn

A three-dimensional and recyclable CdS nanoparticle每carbon nanotube (CNT) hybrid sponge photocatalyst has been fabricated. This hybrid sponge can remove dye molecules efficiently by simultaneous adsorption of organic molecules (by the CNT sponge) and photocatalytic decomposition (by the CdS nanoparticles).

    

Dual-Mode Protein Detection Based on Fe3O4每Au Hybrid Nanoparticles

Lei Lou1, Ke Yu1 (), Zhengli Zhang1, Rong Huang1, Jianzhong Zhu1, Yiting Wang2, and Ziqiang Zhu1
 
1 Key Laboratory of Polar Materials and Devices (Ministry of Education of China), Department of Electronic Engineering, East China Normal University, Shanghai 200241, China
2 Institute for Advanced Interdisciplinary Research, East China Normal University, Shanghai 200062, China

DOI 10.1007/s12274-012-0207-4

Nano Res. 2012, 5(4): 272每282

Address correspondence to yk5188@263.net

Dual-mode protein detection based on Fe3O4每Au hybrid nanoparticles using electrochemical immunosensor and surface-enhanced Raman scattering (SERS) methods is described. The as-prepared Fe3O4每Au hybrid nanoparticles offer great potential for biomedical applications.

    

Multivalent Assembly of Ultrasmall Nanoparticles: One-, Two-, and Three-Dimensional Architectures of 2 nm Gold Nanoparticles

Peng-peng Wang, Qiyu Yu, Yong Long, Shi Hu, Jing Zhuang, and Xun Wang ()
 
Department of Chemistry, Tsinghua University, Beijing 100084, China

DOI 10.1007/s12274-012-0208-3

Nano Res. 2012, 5(4): 283每291

Address correspondence to wangxun@mail.tsinghua.edu.cn

Controlled self-assembly of ~2 nm gold nanoparticles (NPs) to afford one-dimensional (1D) nanochain, two-dimensional (2D) nanobelt and three-dimensional (3D) nanocomet architectures has been achieved by kinetically controlling the diffusion of gold NPs in solution. This study demonstrates that the surface effect of ultrasmall nanocrystals (nanoclusters) is critical in the construction of complex self-assemblies.

    

Densely Aligned Graphene Nanoribbons at ~35 nm Pitch

Liying Jiao, Liming Xie, and Hongjie Dai ()
 
Department of Chemistry, Stanford University, Stanford, California 94305, USA

DOI 10.1007/s12274-012-0209-2

Nano Res. 2012, 5(4): 292每296

Address correspondence to hdai@stanford.edu

High-density aligned graphene nanoribbon (GNR) arrays have been fabricated by plasma etching of graphene sheets through a freestanding nanomask derived from self-assembled poly (styrene- block-dimethylsiloxane) (PS每PDMS) diblock copolymer films.

    

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