I can't believe what passes for news these days. When I saw the title, I thought "this sounds like something that a friend of mine had undergraduate students p

I can't believe what passes for news these days. When I saw the title, I thought "this sounds like something that a friend of mine had undergraduate students play with about 20 years ago". Sure enough, it has been known for a long time http://en.wikipedia.org/wiki/Optical_tweezers http://en.wikipedia.org/wiki/Optical_tweezers