نتایج جستجو برای: ceramic 2 sno

تعداد نتایج: 2545829  

Journal: :Nano letters 2009
Praveen Meduri Chandrashekhar Pendyala Vivekanand Kumar Gamini U Sumanasekera Mahendra K Sunkara

In this report, we present a simple and generic concept involving metal nanoclusters supported on metal oxide nanowires as stable and high capacity anode materials for Li-ion batteries. Specifically, SnO(2) nanowires covered with Sn nanoclusters exhibited an exceptional capacity of >800 mAhg(-1) over hundred cycles with a low capacity fading of less than 1% per cycle. Post lithiation analyses a...

2002
Young-Woon Kim Sang W. Lee Haydn Chen Frederick Seitz

Ta-doped tin oxide, SnO , films have been deposited using metalorganic chemical vapor deposition system on sapphire (0001) 2 substrates in temperature range of 400–6008C. When Ta concentration is varied from 0 to 8.30 at.% in the films, the electrical resistivity is changed by three orders of magnitude where the minimum resistivity was observed at 1.35% of Ta. An increase in the carrier concent...

Journal: :Physical chemistry chemical physics : PCCP 2012
Seo-Yeong Choi Min-Hye Kim Young-Uk Kwon

In this paper, we demonstrate that Cr(2)O(3), a visible absorbing insulator, can be used as an efficient blocking layer material for the anode of dye-sensitized solar cells (DSSCs). We prepared SnO(2) electrodes surface-modified with Cr(2)O(3) with various Cr/Sn ratios and studied the effect of the modification on the performance of DSSCs. DSSCs with Cr/Sn ratios 0.02, 0.05, and 0.10 showed inc...

Journal: :Nanotechnology 2010
Min Lai Syed Mubeen Nicha Chartuprayoon Ashok Mulchandani Marc A Deshusses Nosang V Myung

Sn doped CuO nanotubes were synthesized by thermal oxidization of Cu/SnO(2) core-shell nanowires in air through the Kirkendall effect. The Cu/SnO(2) core-shell nanowires were sequentially electrodeposited by forming a SnO(2) shell followed by electrodeposition of the Cu core. After thermal treatment in air, the core-shell Cu/SnO(2) (13 +/- 2 nm thick shell on 128 +/- 15 nm in diameter core) nan...

2009
Chaikarn Liewhiran Nittaya Tamaekong Anurat Wisitsoraat Sukon Phanichphant

High specific surface area (SSA(BET): 141.6 m(2)/g) SnO(2) nanoparticles doped with 0.2-3 wt% Ru were successfully produced in a single step by flame spray pyrolysis (FSP). The phase and crystallite size were analyzed by XRD. The specific surface area (SSA(BET)) of the nanoparticles was measured by nitrogen adsorption (BET analysis). As the Ru concentration increased, the SSA(BET) was found to ...

Journal: :journal of dentistry, tehran university of medical sciences 0
f. gerami-panah h. jalali l. sedighpour

statement of problem: the connector area is the weakest zone of an all-ceramic fixed partial denture (fpd), where most catastrophic failures of the prostheses tend to occur. purpose: the aim of the present study was to assess the effect of the convergence angle of abutments on the fracture resistance of three-unit fixed partial dentures made of ips-empress2. materials and methods: forty extract...

Journal: :American journal of physiology. Heart and circulatory physiology 2011
Mark J Kohr Angel M Aponte Junhui Sun Guanghui Wang Elizabeth Murphy Marjan Gucek Charles Steenbergen

S-nitrosylation (SNO) is a reversible protein modification that has the ability to alter the activity of target proteins. However, only a small number of SNO proteins have been found in the myocardium, and even fewer specific sites of SNO have been identified. Therefore, this study aims to characterize potential SNO sites in the myocardium. We utilized a modified version of the SNO-resin-assist...

Journal: :Dalton transactions 2012
Dipak V Shinde Rajaram S Mane In-Hwan Oh Joong Kee Lee Sung-Hwan Han

A novel architecture of SnO(2) nanowall-arrays coated with rutile-TiO(2) nanoneedles is fabricated for the first time and envisaged in dye-sensitized solar cells. Devices constructed using these architectures showed a power conversion efficiency of 4.12%, which is the highest among the SnO(2) nanostructures grown on conducting substrates by wet chemical methods.

Journal: :Journal of the American Chemical Society 2003
Wei-Qiang Han Alex Zettl

BN nanotubes are coated with SnO(2) by a simple chemical reaction in solution. BN nanotubes are stirred inside a SnCl(2) solution at room temperature for 1 h. The coating is uniform with complete coverage. The coating thickness is typically 1-5 nm. The coating layer contains SnO(2) nanoparticles with sizes ranging from 1 to 5 nm.

Journal: :Chemical communications 2010
Lisong Xiao Hao Shen Robin von Hagen Jun Pan Lhoussaine Belkoura Sanjay Mathur

An efficient synthesis of highly crystalline SnO(2) QDs with a narrow size distribution (4.27 +/- 0.67 nm) was achieved by microwave-assisted decomposition of Sn(OtBu)(4) in ionic liquid. Printed structures fabricated from SnO(2) QDs showed typical semiconducting I-V behaviors, and gas sensing properties.

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