[thedoc (OP)]

Plans for making nanoparticles might be in their early stages, but some are looking to the future and how we can sort them using lasers...
Read a transcript of the interview by clicking here
or [chapter podcast=1000591 track=14.02.04/Naked_Scientists_Show_14.02.04_1001920.mp3] Listen to it now[/chapter] or [download as MP3]

[yor_on]

"Yes, exactly. And that corresponds to a different frequency. And so, if you have nanoparticles which resonate at different frequencies, what you find is that one colour of light will push one of those nanoparticles more than the other. "

How does that work?
Made me think of matter waves actually.