نتایج جستجو برای: graphene nano platelets

تعداد نتایج: 143760  

Journal: :analytical and bioanalytical chemistry research 0
mohammad ali sheikh-mohseni shahid bakeri high education center of miandoab, urmia university, urmia, i.r. iran

a modified electrode was prepared by modification of the carbon paste electrode (cpe) with graphene nano-sheets. the fabricated modified electrode exhibited an electrocatalytic activity toward gallic acid (ga) oxidation because of good conductivity, low electron transfer resistance and catalytic effect. the graphene modified cpe had a lower overvoltage and enhanced electrical current respect to...

2014
Pengfei Li Caiyun Chen Jie Zhang Shaojuan Li Baoquan Sun Qiaoliang Bao

*Correspondence: Qiaoliang Bao, Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Collaborative Innovation Center of Suzhou Nano Science and Technology, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China e-mail: [email protected], [email protected] The graphene-based transparent and conductive films were demonstrated ...

2014
Chengde Gao Tingting Liu Cijun Shuai Shuping Peng

Graphene is a novel material and currently popular as an enabler for the next-generation nanocomposites. Here, we report the use of graphene to improve the mechanical properties of nano-58S bioactive glass for bone repair and regeneration. And the composite scaffolds were fabricated by a homemade selective laser sintering system. Qualitative and quantitative analysis demonstrated the successful...

2015
Mami Mutoh Shigeaki Abe Teruo Kusaka Mariko Nakamura Yasuhiro Yoshida Junichiro Iida Hiroto Tachikawa Hyun-Kyung Chung

The ternary interaction system composed of fluorinated ethylene carbonate, denoted by EC(F), lithium ion (Li+) and a model of nano-structured graphene has been investigated by means of the density functional theory (DFT) method. For comparison, fluorinated vinylene carbonate, denoted by VC(F), was also used. The model of graphene consisting of 14 benzene rings was examined as a nano-structured ...

Journal: :Nature communications 2012
Sungjin Park Yichen Hu Jin Ok Hwang Eui-Sup Lee Leah B Casabianca Weiwei Cai Jeffrey R Potts Hyung-Wook Ha Shanshan Chen Junghoon Oh Sang Ouk Kim Yong-Hyun Kim Yoshitaka Ishii Rodney S Ruoff

Chemically modified graphene platelets, produced via graphene oxide, show great promise in a variety of applications due to their electrical, thermal, barrier and mechanical properties. Understanding the chemical structures of chemically modified graphene platelets will aid in the understanding of their physical properties and facilitate development of chemically modified graphene platelet chem...

پایان نامه :دانشگاه بین المللی امام خمینی (ره) - قزوین - دانشکده علوم پایه 1392

in this thesis,spin dependend transport and electron transport through of ng/sg(graphene/ superconductor graphen) are studied in the junction of ng/fgt/sg. due to andreev reflection conductance increases in the presence of superconductor graphene.also, by applying a voltage gate on a superconductor, fermi level shifts and the conductance is independent of ferromagnatic substrate. also, the cond...

2015
Wei Chen Yayun Yu Xiaoming Zheng Shiqiao Qin Fei Wang Jingyue Fang Guang Wang Chaocheng Wang Li Wang Gang Peng Xue-Ao Zhang

A so called all-carbon based graphene field effect transistor (GFET) in which the electrodes are composed of graphite-like nano-sheets instead of metals in the traditional devices is fabricated by one-step e-beam direct writing (EBDW). It is also found that the graphite-like nano-sheets in electrodes are perpendicular to the channel graphene, which is confirmed by the transmission electron micr...

2009

Presented is the material and gas sensing properties of graphene-like nano-sheets deposited on 36° YX lithium tantalate (LiTaO3) surface acoustic wave (SAW) transducers. The graphene-like nano-sheets were characterized via scanning electron microscopy (SEM), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The graphenelike nano-sheet/SAW sensors were exposed to differen...

2012
Yu Ye Lun Dai Lin Gan Hu Meng Yu Dai Xuefeng Guo Guogang Qin

Semiconductor nanowires (NWs) or nanobelts (NBs) have attracted more and more attention due to their potential application in novel optoelectronic devices. In this review, we present our recent work on novel NB photodetectors, where a three-terminal metal-semiconductor field-effect transistor (MESFET) device structure was exploited. In contrast to the common two-terminal NB (NW) photodetectors,...

Journal: :Physical chemistry chemical physics : PCCP 2012
Jung-Soo Lee Hyo-Jin Ahn Jong-Chul Yoon Ji-Hyun Jang

We report a robust and direct route to fabricate a three-dimensional nano-foam of few-layer graphene (3D-NFG) with large area coverage via a chemical vapor deposition (CVD) technique. Pyrolysis of polymer/nickel precursor film under a hydrogen environment, simply prepared by spin-coating, leads to the creation of nano-foam in the film and the reduction process of nickel ions. Carbonized-C and t...

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