True Black

What are the effects of such a laser burst on the fatigue failure bahaviour of the metal. this finding has implications in aerospace and defence applications , but what about the strength of the metal?

True black is achievable by many processes, but using a laser is new to me. I like to expose soft silver to 60% nitric acid at 94 degrees F for 10 seconds and rinse. The surface becomes pitted with fine conical pits that readily absorb light. The material is used on solar panels. Some folks use hydrochloric acid to produce black silver powders used in clear panels that use fluid and silver black rather than carbon black as the thermal absorber in the fluid.

Your work is certainly impressive and I'm looking forward to reading those references. Apparently the quality of photo black is excellent. I think a car that would be very difficult to see at night were it photo black. But sensors could benefit for sure. How about antennas? So many applications, so little time.

I doubt that this enhances the corrosion resistance of the metal. Does it need to be vacuum encapsulated?

RichH

This might be more useful for printing part numbers, assembly instructions and so forth on units when they are still in prodution.

Also, wasn't it Edison who wanted to photoengrave books onto thin sheets of nickel? This might be better. How about pictures which could last nearly forever? Warning tags and signs come to mind.

What! any good for stealth weapon skins and acoustic absorbtion?