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Low‐frequency Raman (LFR) spectroscopy is a powerful, nondestructive method used for chemical and structural characterization of materials. Typically, the signal intensity of LFR is relatively low, resulting significantly longer signal acquisition duration. Here, we show a photonic structure based on a planar optical microcavity consists of two distributed Bragg reflectors that is capable of enhancing...
Using a system of multi-zone thermal chemical vapor deposition (CVD) furnaces in parallel and in series, we performed differential preheating of the incoming gases to independently control water vapor formation (from oxygen and hydrogen) and hydrocarbon decomposition to grow vertically aligned multi-wall carbon nanotube (MWCNT) carpets. We identified specific process parameter sweet spots for water...
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