Volume 5

Issue 04,2012

(8 articles)

Vera Neves1,2, Andreas Gerondopoulos1,, Elena Heister1,2, Carmen Tlmaciu3, Emmanuel Flahaut3, B. Soula3, S. Ravi P. Silva2, Johnjoe McFadden1, and Helen M. Coley1 ()

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.
2012, 5(4): 223–234

Rouholla Alizadegan1, Albert D. Liao2,3,4, Feng Xiong2,3,4, Eric Pop2,3,4(), and K. Jimmy Hsia1,2,5()

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.
2012, 5(4): 235–247

Jun Ren1,2, Sheng Meng3(), and Efthimios Kaxiras4

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.
2012, 5(4): 248–257

Lianchang Zhang1,2, Zhiwen Shi1, Donghua Liu1, Rong Yang1, Dongxia Shi1, and Guangyu Zhang1()

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.
2012, 5(4): 258–264

Hongbian Li1, Xuchun Gui2, Chunyan Ji1, Peixu Li3, Zhen Li3, Luhui Zhang1, Enzheng Shi1, Ke Zhu3, Jinquan Wei3,

A three-dimensional and recyclable CdS nanoparticle–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).
2012, 5(4): 265–271

Lei Lou1, Ke Yu1(✉), Zhengli Zhang1, Rong Huang1, Jianzhong Zhu1, Yiting Wang2, and Ziqiang Zhu1

Dual-mode protein detection based on Fe3O4–Au hybrid nanoparticles using electrochemical immunosensor and surface-enhanced Raman scattering (SERS) methods is described. The as-prepared Fe3O4–Au hybrid nanoparticles offer great potential for biomedical applications.
2012, 5(4): 272–282
Published: 29 May 2012

Peng-peng Wang, Qiyu Yu, Yong Long, Shi Hu, Jing Zhuang, and Xun Wang()

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.
2012, 5(4): 283–291

Liying Jiao, Liming Xie, and Hongjie Dai()

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–PDMS) diblock copolymer films.
2012, 5(4): 292–296