Volume 9

Issue 12,2016

(32 articles)


Xin Lu1,§, Xin Luo2,3,§, Jun Zhang4, Su Ying Quek2,3 (*), and Qihua Xiong1,5 (*)

We review lattice vibrations in two-dimensional layered materials: group IV transition metal dichalcogenides, topologically insulating bismuth trichalcogenides, and black phosphorus. The discussion is particularly centered on the theoretical and experimental properties of interlayer and intralayer phonons.
2016, 9(12): 3559–3597

G. Bishwa Bidita Varadwaj and Vincent O. Nyamori (*)

Fabrication of layered double hydroxide and graphene based nanocomposites by various synthetic routes and the applications of these materials as high performance supercapacitors and water oxidation catalysts are discussed in this review.
2016, 9(12): 3598–3621

Zhangting Wu1, Zhongzhong Luo2, Yuting Shen3, Weiwei Zhao4, Wenhui Wang1, Haiyan Nan1, Xitao Guo1, Litao Sun3, Xinran Wang2, Yumeng You5 (*), and Zhenhua Ni1 (*)

The low-temperature photoluminescence (PL) spectra of electron-beam- processed WSe2 exhibit a clear defect-induced PL emission due to excitons bound to defect sites, which are induced by electron beam irradiation. By adopting an electron-beam-free transfer-electrode technique, we successfully prepared a backgated WSe2 device with minimized defects, and a maximum hole mobility of approximately 200 cm2·V–1·s–1 was achieved.
2016, 9(12): 3622–3631

Hualin Ding1, Yunxia Zhang1, Sichao Xu1, and Guanghai Li1,2 (*)

Yolk/shell Fe3O4@SiO2 nanoparticles (NPs) with controlled cavity and shell thickness were prepared by selective acidic etching of silica self-template, and the mechanism of regulation of SiO2 etching and acidic etching was investigated. Under our “standard etching code”, the acid-sensitive Fe3O4 core can be perfectly preserved and the SiO2 shell can be selectively etched away.
2016, 9(12): 3632–3643

Yujiao Shi, Huan Qin, Sihua Yang, and Da Xing (*)

Amplifying the photoacoustic conversion efficiency of nanoprobes by thermally confined shell coating. The synergistic effect between the optical absorbing core and the shell enables the design of highly sensitive photoacoustic nanoprobes through structural transformation.
2016, 9(12): 3644–3655

Junggwon Yun, Myeongwon Lee, Youngin Jeon, Minsuk Kim, Yoonjoong Kim, Doohyeok Lim, and Sangsig Kim (*)

Silicon nanowire negative-AND (NAND) logic gates on a bendable substrate are capable of operating with a supply voltage as low as 0.8 V, with switching and standby power consumption of approximately 1.1 and 0.068 nW, respectively. The NAND logic gates exhibit the stable NAND logic functionality with good mechanical bendability.
2016, 9(12): 3656–3662

Chun-Wei Huang1, Jui-Yuan Chen1, Chung-Hua Chiu1, Cheng-Lun Hsin2, Tseung-Yuen Tseng3, and Wen-Wei Wu1 (*)

We examined the morphological evolution of graphene layers under various electronic effects. The current-carrying capacity was calculated to be ~1.6 × 109 A·cm–2, indicating an impressive breakdown current density.
2016, 9(12): 3663–3670

Zhihong Yang1 (*), Hualiang Lv1, and Renbing Wu2 (*)

A 3D hybrid composite consisting of NiFe nanoparticles embedded within carbon nanocubes decorated on graphene oxide (GO) sheets (NiFe@C nanocubes@GO) exhibits excellent microwave attenuation ability with a minimum reflection loss (RL) of –51 dB at 7.7 GHz and maximum percentage bandwidth of 38.6% for RL < –10 dB at a thickness of 2.2 mm, superior to the previously reported state-of-the- art carbon-based microwave attenuation materials.
2016, 9(12): 3671–3682

Jun Deng, Honghao Zheng, Xiaowen Zheng, Mengyun Yao, Zheng Li, and Changyou Gao (*)

Osteogenic differentiation of mesenchymal stem cells (MSCs) induced by nanoparticles (NPs) was surface chirality-dependent and promoted only by the poly(acryloyl-L-valine) (L-PAV)-anchored gold nanoparticles (L-PAV-AuNPs). It is highly possible that greater intracellular accumulation of L-PAV-AuNPs affects the mitogen-activated protein kinase (MAPK) pathway through stronger mechanical stimuli, leading to osteogenic differentiation of MSCs.
2016, 9(12): 3683–3694

Wenbo Peng1,2,§, Ruomeng Yu1,§, Xingfu Wang1,§, Zhaona Wang1, Haiyang Zou1, Yongning He2, and Zhong Lin Wang1,3 (*)

The temperature dependence of the pyro-phototronic effect on self-powered ZnO/perovskite heterostructured photodetectors is investigated from 77 to 300 K. The pyro-phototronic effect-induced photocurrent enhancement is significantly improved by over 500% as the temperature decreases from 300 to 77 K, and by carefully analyzing the photocurrent, the fundamental working mechanism of the pyro-phototronic effect is studied.
2016, 9(12): 3695–3704