A variety of characteristics of body fluid may be measured by introducing a sample to a textured surface on optical material such as waveguides and sheets. The textured surface presents a field of elongated projections which are spaced apart to exclude certain components of the body fluid sample from...http://www.google.fr/patents/US20090252649?utm_source=gb-gplus-shareBrevet US20090252649 - Apparatus for body fluid analysis using surface-textured optical materials
Apparatus for body fluid analysis using surface-textured optical materials