نتایج جستجو برای: shell thickness

تعداد نتایج: 158583  

2017
Pradeep Bhatia

Functional properties tunability prospect of multi-layered and multi-metallic nanoparticles with respect to their emerging applications has always been the area of attraction. Magnetoplasmonic nanoparticles (MPNPs) present the possibility to exhibit their tuneable magnetic and optical properties with broad applications in magnetic resonance imaging (MRI), cancer therapy, photovoltaic solar cell...

2012
Wen-Long Yao

ANALYTICAL AND EXPERIMENTAL STUDY OF INVESTMENT CASTING WITH LASER STEREOLITHOGRAPHY MODELS by Wen-Long Yao This dissertation presents an analytical and experimental investigation of ceramic shell cracking during the burnout process in investment casting with internally webbed laser stereolithography (SLA) patterns. Included in the consideration are the cracking temperature of the ceramic shell...

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...

2010
Yu Zhang Quanqin Dai Xinbi Li Qingzhou Cui Zhiyong Gu Bo Zou Yiding Wang William W Yu

PbSe/CdSe core/shell nanocrystals with quantum yield of 70% were obtained by the "successive ion layer adsorption and reaction" technology in solution. The thickness of the CdSe shell was exactly controlled. A series of spectral red shifts with the CdSe shell growth were observed, which was attributed to the combined effect of the surface polarization and the expansion of carriers' wavefunction...

2017
Holly F. Zarick Abdelaziz Boulesbaa Eric M. Talbert Alexander Puretzky David Geohegan Rizia Bardhan

In this work, we have examined the ultrafast dynamics of shapeand composition-controlled bimetallic Au/ Ag core/shell nanostructures with transient absorption spectroscopy (TAS) as a function of Ag layer thickness (0−15 nm) and pump excitation fluence (50−500 nJ/pulse). Our synthesis approach generated both bimetallic nanocubes and nanopyramids with distinct dipolar plasmon resonances and plasm...

2017
EVA KORMANÍKOVÁ KAMILA KOTRASOVÁ

Structural optimization using computational tools has become a major research field in recent years. The paper deals with a sizing optimization analysis of laminated circular cylindrical shell. For thin-walled shells, the classical shell theory is capable of accurately predicting the shell behavior. The weight minimization subjected to displacement constraint within the numerical optimization o...

2010
Milan Nikolić Konstantinos P. Giannakopoulos Vladimir V. Srdić

Core-shell particles were formed by deposition of primary silica particles synthesized from sodium silicate solution on functionalized silica core particles (having size of ~0.5 μm) prepared by hydrolysis and condensation of tetraethylortosilicate. The obtained mesoporous shell has thickness of about 60 nm and consists of primary silica particles with average size of ~21 nm. Scanning electron m...

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