I have been loosing sleep over that:-) Thank you for refreshing my memory. There should be a professional association for Star Trek Trivia:-)

>The movie was Star Trek IV: The Voyage Home (the one with the humpback whales) and the material was called "transparent aluminum".
>
>>I loved that scene - whats even more amazing is that that Mac came with a materials science package that allowed scotty to define the structure of (what was it?) aluminum glass in about 8.5 seconds. Boy was Scotty def on the keyboard.