What kind of dark material or paint should I use for the background during hyperspectral imaging (VIS NIR and SWIR)?

I have some transparent or semitransparent meshlike fabrics to analyse using my VIS NIR (400-1000nm) and SWIR (1000-2500) scanners. I need to use some black (strong absorbing) material as...

14 May 2015 1,657 4 View