Infra-red reflectance and emissivity spectra of nanodiamonds
  Reflectance and emissivity spectra of nanodiamonds powder were measured in a dedicated setup at temperatures up to 873 K. The spectra are characterised by presence of sharp bands due to surface-bound functional groups. Thermal desorption of oxygen-containing groups lead to corresponding spectral changes. The maximal emissivity of nanodiamond powder reaches 0.985. 
A. Maturilli, A. A. Shiryaev, I. I. Kulakova, J. Helbert
cond-mat.mtrl-sci astro-ph.SR cond-mat.mes-hall