Volume 6

Issue 08,2013

(8 articles)

Noah J. J. Johnson and Frank C. J. M. van Veggel ()

The progress in core–shell synthesis and the shell growth mechanism in NaLnF4 nanocrystals are reviewed. The advantages of core–shell structures, and their structural morphology based on different characterization techniques is highlighted with some important unanswered questions that we think need to be addressed.
2013, 6(7): 547–561

Alexander N. Chaika1,2 (), Olga V. Molodtsova3, Alexei A. Zakharov4, Dmitry Marchenko5, Jaime Sánchez-Barriga5, Andrei Varykhalov5, Igor V. Shvets2, and Victor Yu. Aristov1,3

Low energy electron microscopy, scanning tunneling microscopy, and angle resolved photoelectron spectroscopy studies prove the millimeter-scale continuity and uniform thickness of the graphene synthesized on cubic-SiC(001)/Si(001) wafers. The graphene overlayer on SiC(001) consists of only a few monolayers with the atomic and electronic properties of quasi-freestanding graphene.
2013, 6(7): 562–570

Qiao Zhang1,2, Xia Guo1, Zhenxing Liang1,2, Jianhuang Zeng1,2, Jian Yang1,3 (), and Shijun Liao1,2 ()

PdAg alloys have been controllably grown at different locations on gold nanorods, producing high-quality dumbbell-like and branched nanorods. The branched nanorods exhibit a higher electrochemical activity for ethanol oxidation, but a worse anti-poisoning performance than the dumbbell-like nanorods.
2013, 6(7): 571–580

Kai Leng, Fan Zhang, Long Zhang, Tengfei Zhang, Yingpeng Wu, Yanhong Lu, Yi Huang, and Yongsheng Chen ()

An advanced graphene-based Li-ion hybrid supercapacitor system, consisting of a high specific capacity graphene-inserted Li4Ti5O12 anode and a high surface area graphene–sucrose cathode, has been successfully fabricated and shows ultrahigh performance. Moreover, the graphene–Li4Ti5O12 nanocomposite also delivers excellent reversible capacities compared with the theoretical 175 mA·h·g–1 capacity of pure Li4Ti5O12 at the same rates.
2013, 6(7): 581–592

Mareen Glaeske and Antonio Setaro ()

Here we introduce π-hybrids, a new class of hybrid nanoplasmonic colloidal systems that take advantage of the coupling between the excitons in single-walled carbon nanotubes and the plasmons in gold nanorods to overcome the low emission yield of carbon nanotubes. This simple, robust and flexible technique strongly enhances the luminescence of nanotubes, even for chiralities whose enhancement has never reported before.
2013, 6(7): 593–601

Ning Guo1, Jinquan Wei1 (), Yi Jia1, Huanhuan Sun1, Yuhang Wang2, Kehan Zhao2, Xiaolan Shi2, Liuwan Zhang2, Xinming Li1, Anyuan Cao3, Hongwei Zhu1, Kunlin Wang1, and Dehai Wu1

A reliable and bendable capacitor fabricated using a hexagonal boron nitride (h-BN) thin film as a dielectric shows a high specific capacitance of 6.8 μF/cm2, which is one order of magnitude higher than the calculated value.
2013, 6(7): 602–610

Yanfen Wan1,2, Hervé Portalès1,2, Nicolas Goubet1,2, Alain Mermet3, and Marie-Paule Pileni1,2 ()

The truncated-tetrahedral nanocrystal superlattices (left) mainly contain single domain building blocks while the supracrystalline films (right) are composed of a mixture of single domain and polycrystalline nanocrystals.
2013, 6(7): 611–618

Xiaolong Chen§, Lin Wang§, Wei Li, Yang Wang, Zefei Wu, Mingwei Zhang, Yu Han, Yuheng He, and Ning Wang ()

We investigated the electron–electron interactions in monolayer graphene quantum capacitors by performing a simultaneous analysis of compressibility as function of temperature and carrier density. By considering the temperature-dependent charge fluctuations, we also established a model to explain the round-off effect near the Dirac point.
2013, 6(7): 619–626