نتایج جستجو برای: ultrasonic atomization and pyrolysis
تعداد نتایج: 16839368 فیلتر نتایج به سال:
Over 40% of high-purity silicon (Si) is consumed as sludge waste consisting of Si, silicon carbide (SiC) particles and metal impurities from the fragments of cutting wire mixed in ethylene glycol based cutting fluid during Si wafer slicing in semiconductor fabrication. Recovery of Si from the waste Si sludge has been a great concern because Si particles are promising high-capacity anode materia...
Multiple layer nanoparticles offers a likelihood of success in drug delivery, as it provides a solution for a more controllable drug release, as with such structures, control over the capsule wall thickness, permeability, stability, and degradation characteristics can be achieved (Kumar, 2008). Using PDMS microfluidic devices to synthesize polymeric multilayer microparticles has become popular ...
This paper presents the design and characterization of micro-fabricated 0.5 MHz silicon-based ultrasonic nozzles. Each nozzle is made of a piezoelectric drive section and a silicon-resonator consisting of five Fourier horns, each with half wavelength design and twice amplitude magnification. Results of impedance analysis and measurement of longitudinal vibration confirmed the simulation results...
Nano-sized ZnO particles with a narrow size distribution and high crystallinity were prepared from aqueous solutions with high concentrations of Zn containing salts and citric acid in a conventional spray pyrolysis setup. Structure, morphology and size of the produced material were compared to ZnO material produced by simple spray pyrolysis of zinc nitrates in the same experimental setup. Using...
Ultrasonic standing wave atomization (USWA) can obtain micron-sized spherical droplets from high viscosity or surface energy liquids, which mainly depend on the high-energy density of a sound field. In this paper, formation an ultrasonic field be generated by vibration tool head driven magnetostrictive transmitters. Based simulation environment Comsol Multiphysics software, numerical study abou...
Porous carbon spheres with unique structures and morphologies are prepared from energetic carbon precursors, alkali propiolates, via ultrasonic spray pyrolysis. Aerosolized liquid droplets containing alkali propiolates act as microreactors that confine the thermal decomposition of energetic precursors and lead to the formation of several unprecedented carbon morphologies.
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