Abstract

FILIPPINI, D  and  LUNDSTROM, I. Comtuter screen photo-assisted techiniques for chemical sensing. An. Asoc. Quím. Argent. [online]. 2005, vol.93, n.1-3, pp.1-12. ISSN 0365-0375.

The paper deals with the use of the computer screen as a light source in colorimetric experiments (light absorption, reflection, scattering, emission) with a web camera as a detector. This combination will be described in some detail and some examples of its applications given, related mainly to biomedical analysis. It is e.g. shown how the computer/web camera platform can be used to read arrays of biomedical samples and to perform colorimetric diagnostic tests. It is furthermore shown that the set-up can give fingerprints of coloured substances through a simultaneous measurement of both absorption and emission of light. The use of the computer screen photo- assisted technique as an electronic nose is also described. Finally further developments and possibilities for the computer screen photo-assisted techniques are speculated upon.