The silicon atoms attain an induced magnetic moment from the TM atom which gives rise to a broad spectrum of magnetic behaviour in these clusters depending on M. Suitable stacking of clusters along the direction perpendicular to their plane of symmetry is a possible route to grow one-dimensional...
Crystalline or amorphous, silica can be obtained from natural sources or synthetically through wet or thermal processes. Among those synthetic routes, sol-gel is by far the most used and versatile process especially to obtainmesoporous materials, with high surface areas andpore volumes[3]. The pore...
Amorphous silica can be obtained from oats, rice straw and rice husks by minor modifications of the devices. The raw material is processed in two different temperature modes: heat, where the temperature does not exceed +450 掳C, and cold, where the temperature is maintained from -35 掳C to...
Direct acousto-optic modulation within complementary metal–oxide–semiconductor compatible silicon photonic waveguides using electrically driven surface acoustic waves is demonstrated. Non-reciprocal operation bandwidths of >100 GHz and insertion losses of <0.6 dB are obtained. ...
Silicon is receiving discernable attention as an active material for next generation lithium-ion battery anodes because of its unparalleled gravimetric capacity. However, the large volume change of silicon over charge–discharge cycles weakens its compet
FIELD: chemistry.;SUBSTANCE: silicon dioxide is reduced by zinc, obtaining silicon or zinc silicide, sodium silicates or zinc chloride vapour. The reaction is carried out in a ternary molten slag, containing sodium chloride, silicon dioxide and zinc. The reaction is carried out at temperature abov...
The dimensionless cylinder separation, d/r, as a function of the liquid-cylinder intersection angle, α, is obtained from Eq. (6)(10)dr=Rrcosθ+α+cosα-1. It is noted that for two-cylinder systems, no physically meaningful solutions to Eq. are found for vapor-wetted cylinders (θ≥90...
s.d. is calculated from the N = 9 point measurements for each device configuration b, Bar graph showcasing the normalized photocurrents on the edge, centre and corner points. Data are expressed as mean ± s.d. derived from measurements of four independent samples (N = 4) ...
response, the sinusoidal signal with sweeping frequency from a signal generator of a vector network analyzer (VNA, Keysight N5234A) is used to drive the modulator via the microwave probe, while the photodetector output is connected to the VNA receiver. EO response is obtained from the s-...
In the next Section, a brief overview on the methods used for fabrication and for electrothermal characterization of the thermal demonstrators is presented. 3. Methods for Fabrication and Characterization of Thermal Demonstrators The experimental results presented in this publication were obtained from the...