This video, shows a Raman spectrometer mounted on a robotic platform making observations of Titanium oxide from a distance of > 1 m.
Raman spectroscopy can be used to identify almost any molecular compound, however the scattering process is weak making stand off observations of greater than a few 10s of centimetres a challenge. ISI HES range of Spectrometer seek to resolve this problem. In this video observation are made of TiO2 from a robotic platform. This system could be converted to search for a variety of hazardous materials from explosive to polluting compounds.