ABSTRACT
Nanosized diamonds obtained by detonation of explosives are the subject of active studies in several scientific and technological fields. Besides their interesting peculiarities for solid-state physics studies, their presence in various circumstellar environments has been inferred from infrared (IR) spectra. Nanodiamonds are unique materials, allowing investigation of size-dependent properties of matter. We report measurements of IR properties of detonation nanodiamonds in reflectance at room temperature and in emissivity in a dedicated setup at temperatures up to 873 K. The spectra are characterized by the presence of sharp bands due to surface-bound functional groups. Thermal desorption of oxygen-containing groups leads to corresponding spectral changes. The maximal emissivity of nanodiamond powder reaches 0.985.
Notes
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