LOL ... Interesting.
I think to understand the article - one needs to understand additive and subtractive colour and the fact that colour can extend past the 380 nanometers - 720 nanometer range - albeit not visible to the , and that in most cases there are primary colours - different for both additive and subtractive colour, based on the chemical structure of the colourant - partially organic, which accounts for there being no true black - CIE XYZ colour gamat.
Carbon, absorbs heavily in the regions of near and far IR. Typically the nano tubes are all carbon based.
We once had a discussion with a guy who worked on a night vision system - cammo being cammo during the day, but via an IR visor the soldier lit up like a bright silhouette.
To combat that, we added carbon to the disruptive cammo (our secret formulation) , which rendered the device almost useless.
I think I said something to the effect of - a million dollars to devise you IR scope, 10c to defeat it ... the dude was not impressed.
Using carbon - and some sputtered silver nylons, we are ay the stage where we can make command tents that will keep all the radiation along a wide spectra of EM waves in the tent and essentially render the command tent ''invisible''.
Carbon electrospun nano tubes are also being developed right here in SA.
