نتایج جستجو برای: silicon dioxide nanoparticle

تعداد نتایج: 188643  

Journal: :Pharma innovation 2023

An experiment was conducted to know the effect of biogenic nanoparticle seed treatment in pigeon pea under pot culture during 2021-22 at NSP, GKVK, Bangalore. Seeds were sown pots after imposing with eight treatments various concentrations including control viz., green zinc oxide (1000 ppm & 1250 ppm), silicon dioxide (500 750 ppm) also chemical oxide, and Spinosad (2 ppm). Among different nano...

Journal: :journal of nanostructures 2016
m. abbasian n. khakpour aali

titanium dioxide (tio2) nanoparticles, with an average size of about 45 nm, were encapsulated by polystyrene using in situ nitroxide mediated radical polymerization   in the presence of 3-aminopropyl triethoxy silane (aptes) as a coupling agent and 2, 2, 6, 6-tetramethylpiperidinyl-1-oxy  as a initiator. first, the initiator for nmrp was covalently bonded onto the surface of titanium dioxide na...

Journal: :ECS Journal of Solid State Science and Technology 2014

1998
H. F. Wei

This study attempts to model correctly the process dependence of thermal SiO2 film physical structures and their associated densities, as well as high frequency dielectric constants, so as to provide a foundation for a ULSI process-dependent device reliability simulator. By exploring the characteristic signature of ellipsometric data reduced using a one-layer film model, and comparing it to a t...

2004
R. T. Neal M. E. Zoorob M. D. Charlton G. J. Parker C. E. Finlayson J. J. Baumberg

We describe waveguides of photoluminescent silicon-rich silicon dioxide, which have been patterned by triangular two-dimensional ~2D! photonic crystals to give higher-order photonic bandgaps occurring within the luminescence band of the core material. Photonic crystal modification of the photoluminescence spectrum allows identification of angle-tuned photonic bandgaps, in close agreement with 2...

Journal: :Journal of occupational health 2007
Fahrettin Talay Kamil Gurel Safiye Gurel Bahar Kurt Tuncer Tug

Free silica (silicon dioxide) is naturally found in amorphous and crystalline forms in many rocks in the Earth . Inhaled silicon dioxide is usually crystalline and most often quartz which is the most important form. Silicosis is an irreversible disease that results from workrelated exposures to dusts containing silica crystals, and is characterized by fibrotic tissue reaction caused by the pres...

Journal: :IEEE Journal of Quantum Electronics 2003

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