Volume 6

Issue 11,2013

(8 articles)

Woo-Kyung Lee1, Stanislav Tsoi1, Keith E. Whitener1, Rory Stine2, Jeremy T. Robinson3, Jonathon S. Tobin4, Asanka Weerasinghe4, Paul E. Sheehan1 (), and Sergei F. Lyuksyutov4 ()

Isolated graphene nanoribbons with resistivity less that may be achieved with e-beam lithography can be easily produced in ambient air using atomic force microscopy-based electrostatic nanolithography (AFMEN). Reduction of fluorine from graphene fluoride occurs in non-uniform electric filed of magnitude 1–2 V/nm.
2013, 6(11): 767–774

Zhe Liu1,2, Tao Luo2, Bo Liang1,2, Gui Chen2, Gang Yu2, Xuming Xie2, Di Chen2 (), and Guozhen Shen1 ()

Single InAs nanowire-based photodetectors have been fabricated and shown to have very high responsivity and stability over a broad spectral range from the ultraviolet to the near-infrared.
2013, 6(11): 775–783

Gregory S. Smith1 (), Seung-Yong Jung2,, James F. Browning3, Jong K. Keum3, Nickolay V. Lavrik2, Mussie G. Alemseghed1,4, and C. Patrick Collier2

Combining neutron reflectometry and nanolithography, the detailed structure of a self-assembled organic thin film deposited on a regularly patterned silicon surface at the solid–liquid interface is presented. The detailed structure of the substrate and film, inside and outside of the 100 nm deep holes is revealed with sub-nanometer resolution.
2013, 6(11): 784–794

Wen Xu1, Yongsheng Zhu2, Xu Chen1, Jing Wang1, Li Tao1, Sai Xu1, Tong Liu1, and Hongwei Song1 ()

A novel strategy to improve the upconversion luminescence (UCL) of NaYF4:Yb3+,Er3+ upconversion nanophosphors (UCNPs) is presented, combining the near-field coupling of the surface plasmon resonance (SPR) of a porous silver film and the far-field coupling of poly(methyl methacrylate) photonic crystals with the UCNPs. A maximum UCL enhancement of 60-fold was obtained and furthermore the porous structure of the silver film can suppress local thermal effects and increase transparency.
2013, 6(11): 795–807

Hongwei Liu1,2, Junpeng Lu1 (), Minrui Zheng1, Sing Hai Tang1, Xinhai Zhang2 (), and Chorng Haur Sow1 ()

Composition-dependent photoconductivity in ternary CdSxSe1-x nanobelts is measured using optical pump-terahertz probe spectroscopy. Binary CdS and CdSe are observed to have much shorter carrier lifetimes than those of ternary alloys whilst ternary CdSxSe1-x nanobelts present much higher photoconductivity than those of binary nanobelts.
2013, 6(11): 808–821

Xiaona Hu1,3,, Yuyun Zhao2,, Zhijian Hu1, Aditya Saran1,3, Shuai Hou1,3, Tao Wen1,3, Wenqi Liu1,3, Yinglu Ji1, Xingyu Jiang2 (), and Xiaochun Wu1 ()

In the light of the current problems of silver nanoparticles (Ag NPs) in terms of antibacterial performance, we designed a trimetallic core/shell nanostructure with AgPt alloy nanodots epitaxially grown on gold nanorods (Au@PtAg NRs) as a potential antibacterial agent. Such architecture is not only found to be an effective way to incorporate the requirements of both high antibacterial activity and high chemical stability at the same time, but also promises great potential in utilizing additional plasmonic effects in the fight against pathogenic bacteria, including the challenge of increasing severity of multidrug resistance.
2013, 6(11): 822–835

Kristina Tschulik1 (), Baptiste Haddou1, Dario Omanovi2, Neil V. Rees1, and Richard G. Compton1 ()

It is demonstrated that sizing of single Fe3O4 nanoparticles can be performed by two independent electrochemical routes—cathodic and anodic particle coulometry. This allows precise nanoparticle size information and verification of the obtained results solely by electrochemical methods.
2013, 6(11): 836–841

Yang Su, Jinhong Du, Dongming Sun, Chang Liu, and Huiming Cheng ()

In an attempt to achieve graphene sheets with a highly restored π-conjugated structure for use in inkjet-printed electronics, we present a “weak oxidation–vigorous exfoliation” strategy for tailormade graphene oxide with a more intact carbon plane and suitable size. Its inkjet-printed patterns show an ultrahigh conductivity of ~420 S·cm–1, which is tens of times higher than previously reported results. Furthermore, printed all-carbon transistors with excellent performance are demonstrated.
2013, 6(11): 842–852