Volume 6

Issue 10,2013

(8 articles)

Haiqing Zhou1,2, Fang Yu5, Yuanyue Liu3,4, Xiaolong Zou3,4, Chunxiao Cong1, Caiyu Qiu1, Ting Yu1 (), Zheng Yan2, Xiaonan Shen1, Lianfeng Sun5, Boris I. Yakobson2,3,4 (), and James M. Tour2,3,4 ()

Via anisotropic oxidative etching, ultrathin MoS2 sheets can be etched and patterned with well-oriented equilateral triangular pits by simply heating the samples in air, a process that is greatly affected by the surrounding temperature and the number of MoS2 layers. Additionally, first-principles computations have been performed to explain the formation mechanism of the triangular pits.
2013, 6(10): 703–711

Qian Mei1, Roger H. Johnson1, Xixi Wei2,3, Fengyu Su1, Yan Liu2,3, Laimonas Kelbauskas1, Stuart Lindsay2,3,4, Deirdre R. Meldrum1(), and Hao Yan2,3()

Our study demonstrates an innovative approach whereby DNA origami binding assay for fast detection of protein in cell lysate using microfluidic isotachophoresis (μ-ITP). μ-ITP and DNA nanoarrays can be easily coupled to other microchip pre- and post-processing steps to provide an integrated platform for clinic diagnostics.
2013, 6(10): 712–719

Weifeng Si1,2,§, Jia Li1,3,§, Huanqiao Li1, Shushuang Li1, Jie Yin4, Huan Xu2, Xinwen Guo3, Tao Zhang4, and Yujiang Song1 ()

We report a fast in situ seeding approach based on zinc(II) porphyrin (ZnP) under white light irradiation, leading to uniform spherical platinum nanodendrites with tunable sizes. The platinum nanodendrites exhibit significantly improved electrocatalytic activities toward oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR) compared with commercial platinum black.
2013, 6(10): 720–725

Ziqi Sun1, Ting Liao2, Kesong Liu3 (), Lei Jiang4, Jung Ho Kim1 (), and Shi Xue Dou1

Hierarchical ZnO hollow microspheres with designed constituent architectures have been synthesized via a two-step self-assembly approach, and present robust superhydrophobicity comparing to those synthesized via the traditional one-step synthesis. After surface modification by perfluorinated silane, the two-step synthesized ZnO hollow microsphere thin films exhibited environmentally durable superhydrophobicity under long-time UV irradiation.
2013, 6(10): 726–735

Shun-Wen Chang1 (), Rohan Dhall2, Moh Amer2, Kentaro Sato4, Riichiro Saito4, and Stephen Cronin1,2,3

A pronounced M-shape profile in the gate dependence of the 2D band Raman frequency of the individual suspended carbon nanotube indicates a structural phase transition.
2013, 6(10): 736–744

Mingliang Zhang1, Christopher M. Earhart1, Chinchun Ooi1, Robert J. Wilson1, Mary Tang2, and Shan X. Wang1,2 ()

High-moment synthetic antiferromagnetic nanoparticles have been covalently bound with streptavidin to facilitate specific binding to H1650 lung cancer cells which have been conjugated with biotin. Once coated with particles, these cells can be easily manipulated under an external magnetic field and be “identified” and “picked-up” when spiked into a blood sample.
2013, 6(10): 745–751

Kilian Mergenthaler1, Azhar Iqbal2, Jesper Wallentin1, Sebastian Lehmann1, Magnus T. Borgstrm1, Lars Samuelson1, Arkady Yartsev2, and Mats-Erik Pistol1 ()

We demonstrate photon upconversion in single degenerately n-doped InP nanowires by direct excitation into the electron gas.
2013, 6(10): 752–757

Ruomeng Yu1,§, Caofeng Pan2,§, Youfan Hu1, Lin Li3, Hongfei Liu4, Wei Liu5, Soojin Chua4, Dongzhi Chi4, and Zhong Lin Wang1,2 ()

Piezotronic effects have been employed to tune the Schottky barrier height (SBH) at local contacts and hence enhance the performances of Schottky-contacted metal–semiconductor–metal (MSM) structured GaN nanobelt (NB) based photodetectors.
2013, 6(10): 758–766