Hollow ZrO2 nanoshells are formed over a precise range of temperature and pressure from the oxidation of ZrCl2. The greatly enhanced photoluminescence (∼ 110×) that the nanoshells exhibit compared to that of either nanospheres or irregularly shaped nanoparticles is attributed to the nanoshell geometry (see Figure). Potential future applications include information-storage devices.
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Gole et al. (2006) studied this question.
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