Totally boring / totally overhyped.<p>Short version: if you hit a very few atoms with an obscene amount of energy, you blow some electrons out of their proper orbitals...and everything returns to normal the instant you turn the laser off.<p>The aluminum is only transparent in the deep UV, and only transparent for as long as you keeping dumping insane amounts of energy into it.<p>Big woop.<p>This is a typical example of scientists becoming masters of the grandiose press release to hype something trivial into an attempt to get more grant money.