Volume 7

Issue 07,2014

(15 articles)


Tim H. Osborn and Amir A. Farajian(*)

We explore silicene nanoribbons, recently fabricated single-atom thick silicon structures, with and without silver contacts for building nanoscale sensors capable of detecting carbon monoxide with molecular resolution.
2014, 7(7): 945–952

Ye Tian1,2, Chuangfei Guo3, Shengming Guo1, Taifung Yu5,and Qian Liu1,4 (*)

We propose a memristor based on an interface between fluorine- doped tin oxide (FTO) and Bi2S3 nested nano-networks, successfully realizing continuously tunable resistance controlled by both voltage (current) and its applied time. The brain-like memorizing capability of the memristor is also demonstrated. The memoristive mechanism in the interface is thought to be dominated by a Schottky barrier tuned by the capture/release of the carriers in interface traps with dispersive energy.
2014, 7(7): 953–962

Antonio Esaú Del Rio-Castillo1, César Merino2, Enrique Díez-Barra1, and Ester Vázquez1 (*)

The mechano-chemical synthesis of graphene monolayers from carbon fibres and the selective sorting of few- and mono-layers of graphene has been achieved.
2014, 7(7): 963–972

Zhen Li1, Shun-Wen Chang2, Chun-Chung Chen1, and Stephen B. Cronin1,2 (*

This article constitutes the first experimental measurement of photocurrent spectra from monolayer MoS2. We report substantial improvements (two- to three-fold) and modulation in the photoluminescence efficiency and photocurrent of monolayer MoS2 flakes under both ionic liquid and electrostatic gating. This improvement arises from the passivation of surface states and trapped charge of the material.
2014, 7(7): 973–980

Yujun He, Dongqi Li, Tianyi Li, Xiaoyang Lin, Jin Zhang, Yang Wei (*), Peng Liu, Lina Zhang, Jiaping Wang, Qunqing Li, Shoushan Fan, and Kaili Jiang(*)

A metal-film-assisted method realizes an ultra-clean transfer of single-walled carbon nanotubes (SWCNTs) mediated by poly(methyl methacrylate) (PMMA). The amount of PMMA residue can be greatly reduced due to its strong physical adhesion to the metal film. Clear Schottky barriers can be observed in cross-stacked SWCNT networks fabricated by multiple transfers. The relatively low tem- perature employed also allows this technique to be compatible with nanomaterial-based flexible electronics.
2014, 7(7): 981–989

Peng Bai1,2,§, Guang Zhu1,§, Yu Sheng Zhou1,§, Sihong Wang1, Jusheng Ma2, Gong Zhang2, and Zhong Lin Wang1,3 (*)

This work provides a new approach to effectively enhance the output power density of triboelectric nanogenerators (TENGs) for harvesting mechanical energy. The effect of the intrinsic dipole moment in polarized polyvinylidene fluoride (PVDF) thin films on the electrical output of TENGs has been investigated.
2014, 7(7): 990–997

Mark Triplett1,2, Hideki Nishimura4, Matthew Ombaba1, V. J. Logeeswarren1, Matthew Yee1, Kazim G. Polat1, Jin Y. Oh1, Takashi Fuyuki4, Franois Léonard3, and M. Saif Islam1 (*)

A high precision vertical transfer printing method for arrays of single crystalline semiconductor materials is presented along with complementary integration processes for flexible devices. Robust contacts to transferred silicon wire arrays with reversible tactile characteristics are demonstrated representing silicon based, non- piezoelectric, and flexible tactile sensors.
2014, 7(7): 998–1006

Hongyi Li1,2, Jinshu Wang1 (*), Man Liu1, Hong Wang1, Penglei Su1, Junshu Wu1, and Ju Li2 (*)

A layer of TiO2 nanotubes dramatically improves the electrocatalytic activity and mechanical stability of Pt nanoparticles when used for methanol oxidation.
2014, 7(7): 1007–1017

Silvia Orsi1, Ernesto Di Maio2 (*), Salvatore Iannace3, and Paolo A. Netti1,2

Gas foaming has been utilized to produce hollow micrometric and nanometric particles. To do so, a “containing-barrier-deformation/ stress transfer”-film approach has been used, where a removable film embedding the particles serves for the three functions of: (i) Containing the particles for ease of handling, (ii) avoiding the loss of the blowing agent and (iii) allowing the non-isotropic deformation of the particles as well as of the hollows. The numerous available processing variables as well as the independence between the particle formation and the hollow formation stages allow for the achievement of several particle shapes, dimensions and materials and of several hollow attributes.
2014, 7(7): 1018–1026

Stefano Diodati1, Luciano Pandolfo2, Andrea Caneschi3, Stefano Gialanella4, and Silvia Gross1,2 (*)

Coprecipitation of oxalates and hydrothermal synthesis are combined to prepare the highly crystalline cobalt, nickel, zinc and manganese spinel ferrites CoFe2O4, NiFe2O4, ZnFe2O4, and MnFe2O4 at 75 °C
2014, 7(7): 1027–1042