نتایج جستجو برای: silicon particles

تعداد نتایج: 233671  

Journal: :Journal of the Ceramic Society of Japan 1997

Journal: :Nuclear Data Sheets. Section A 1967

2005
T. K. Nelson

The task of tracking charged particles in energy frontier collider experiments has been largely taken over by solidstate detectors. While silicon microstrip trackers offer many advantages in this environment, large silicon trackers are generally much more massive than their gaseous counterparts. Because of the properties of the machine itself, much of the material that comprises a typical silic...

2018
A. Bhowmik R. Malik S. Prakash T. Sarkar M. D. Bharadwaj S. Aich S. Ghosh

A high concentration of lithium, corresponding to charge capacity of ~4200 mAh/g, can be intercalated in silicon. Unfortunately, due to high intercalation strain leading to fracture and consequent poor cyclability, silicon cannot be used as anode in lithium ion batteries. But recently interconnected hollow nano-spheres of amorphous silicon have been found to exhibit high cyclability. The absenc...

Journal: :Optics express 2012
Chang-Ching Tu Qifeng Zhang Lih Y Lin Guozhong Cao

We demonstrate silicon-based phosphor materials which exhibit bright photoluminescence from near-infra-red to green. The colloidal composites which are composed of silicon quantum dots (SiQDs) attached on micro-size silicon particles are synthesized by electrochemical etching of silicon wafers and then dispersed in ethanol. Subsequently, isotropic etching by HF/HNO3 mixture controls the size so...

Journal: :Nanotechnology 2008
Hua Qin Hyun-Seok Kim Robert H Blick

A new transmission-type electron multiplier was fabricated from silicon-on-insulator (SOI) material by integrating an array of one-dimensional (1D) silicon nanopillars onto a two-dimensional (2D) silicon membrane. Primary electrons are injected into the nanopillar-membrane (NPM) system from the flat surface of the membrane, while electron emission from the nanopillars is probed by an anode. The...

Journal: :Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1988

2009
Lu Hu Xiaoyuan Chen Gang Chen

An extended Mie scattering theory is used in this paper to analyze the surface-plasmon enhanced light absorption in silicon for photovoltaic applications. The calculation results show that the optical absorption in silicon can be enhanced up to 50 times at resonance frequency by embedded spherical silver nanoparticles due to the local field enhancement by surface plasmons. The analysis reveals ...

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