 The result is crushed into a fine powder, dispersed again in toluene and sprayed in a thin coat on a copper surface.The coating absorbed 97.5 percent of the light from a far-infrared laser and tolerated 15 kilowatts per square centimeter for 10 seconds.Damage tolerance is about 50 percent higher than for similar coatings, e.g., nanotubes alone and carbon paint.