Thinking about this method, I think that a much better use for the technique could be:
1) either engrave the inner surface of metallic parts in airplanes or spatial stations with a microscopic pattern allowing the recognition ot metal scrapes stolen or found in the sea after an accident (hours count and you could be searching in the wrong area). This could accelerate a lot the identification of the remains and help identifying corpses found next to some metallic part. Many metallic parts are hollow and as long as the pattern is placed in inner surface (inside a tube for example) would not create any problem with dirt, paint or gloss of the final product. That could be a real application.
2) or try to engrave the outer surface to make the airplane surface smoother without losing too much efficience and properties. I assume that this in hands of a competent engineer could reduce a little the noise emited by the airplane.
3) same as point one, but for guns and weapons would be also really useful
1) either engrave the inner surface of metallic parts in airplanes or spatial stations with a microscopic pattern allowing the recognition ot metal scrapes stolen or found in the sea after an accident (hours count and you could be searching in the wrong area). This could accelerate a lot the identification of the remains and help identifying corpses found next to some metallic part. Many metallic parts are hollow and as long as the pattern is placed in inner surface (inside a tube for example) would not create any problem with dirt, paint or gloss of the final product. That could be a real application.
2) or try to engrave the outer surface to make the airplane surface smoother without losing too much efficience and properties. I assume that this in hands of a competent engineer could reduce a little the noise emited by the airplane.
3) same as point one, but for guns and weapons would be also really useful