The heat is on: A variation of green luminescence intensity of ZnO microcrystals embedded in poly(methyl methacrylate) is observed. This material is used for non-contact thermometer, which has an accuracy of 0.1 K over a temperature range of 83-474 K. Scale bars: 10 μm.
Keywords: ZnO microcrystals; cryogenic thermometry; luminescence; poly(methyl methacrylate); sensors.
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