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Traditional low-refraction-index devices are usually supported by a pedestals, introducing an extra air layer compared with real on-chip devices, which cannot meet the demand of optical interconnection. In this work, we proposed and experimentally demonstrated silica microtoroids bonded on high-refractive-index silicon substrate realizing good light confinement [1]. With proper microtoroid minor diameter,...
This work intends to understand and model the kinetic aspect or the change of substrate weight over time in the selective growth of silica nanowires (NWs) catalyzed through Pd thin film. Various adsorption-induced, diffusion-induced, or unified vapor-liquid-solid (VLS) growth models have been developed to describe the NW length varying with time. Since NW length has been difficult to be measured,...
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