In this study, the silicon dioxide was deposited on the silicon substrate by metal-organic based plasma enhanced chemical vapor deposition (PECVD) method at the low temperature. The metal-organic tetraethoxy-silane (TEOS) was used as a silicon precursor in liquid state. In addition, oxygen and argon were used as ambient gases. Effects of the working pressure and O2/TEOS pressure ratio on the ch...

We report the first instance of deposition of preferentially oriented, nanocrystalline, and nanocolumnar strontium-doped lead zirconate titanate (PSZT) ferroelectric thin films directly on thermal silicon dioxide. No intermediate seed or activation layers were used between PSZT and silicon dioxide. The deposited thin films have been characterised using a combination of diffraction and microscop...

A semiclassical Monte Carlo technique is employed to simulate the steady-state electron transport in silicon dioxide at intermediate and high electric fields. The electronic band-structure is modelled by a single parabolic, by a single nonparabolic as well as an isotropic four-band model. We find that the electronic behavior of silicon dioxide is mainly influenced by a single nonparabolic condu...

Multiplexed analysis allows researchers to obtain high-density information with minimal assay time, sample volume and cost. Currently, microcarrier or particle-based approaches for multiplexed analysis involve complicated or expensive encoding and decoding processes. In this paper, a novel optical encoding technique based on nano-silicon dioxide film is presented. Microcarriers composed of ther...

We report on the fabrication of polyelectrolyte multilayer-coated hollow silicon dioxide micropillars as pH-responsive drug delivery systems. Silicon dioxide micropillars are based on macroporous silicon formed by electrochemical etching. Due to their hollow core capable of being loaded with chemically active agents, silicon dioxide micropillars provide additional function such as drug delivery...

in this work firstly zno nanoparticles were synthesized via a simple precipitation method. at the second step titanium dioxide and silicon dioxide shell were synthesized on the core. for preparation zno-tio2-sio2 the sol product was calcinated at 500 ºc for 2h. properties of the product were examined by x-raydiffraction pattern (xrd), scanning electron microscope (sem) and fourier transform inf...

occupational exposure to heavy metals, organic solvents and silica is associated with a variety of renal manifestations. improved understanding of occupational renal disease provides insight into environmental renal disease, improving knowledge of disease pathogenesis. silica (sio 2 ) is an abundant mineral found in sand, rock, and soil. workers exposed to silica include sandblasters, miners, q...

An easy method for fabricating microand nanofluidic channels, entirely made of a thermally grown silicon dioxide is presented. The nanochannels are up to 1-mm long and have widths and heights down to 200 nm, whereas the microfluidic channels are 20-lm wide and 4.8-lm high. The nanochannels are created at the interface of two silicon wafers. Their fabrication is based on the expansion of growing...

Ellipsometric determination of optical constants for silicon and thermally grown silicon dioxide via a multi-sample, multi-wavelength, multi-angle investigation" (1998). Optical constant spectra for silicon and thermally grown silicon dioxide have been simultaneously determined using variable angle of incidence spectroscopic ellipsometry from 0.75 to 6.5 eV. Spectroscopic ellipsometric data set...

We have found that the deposition of critical optical thin film stacks with silicon dioxide from an electron beam gun is severely limited by the stabilty of the evaporation pattern of the material. We had not obtained satisfactory results in some of the more demanding applications with either solid or granular starting material. The amount of material deposited on a central monitor chip or cont...