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When atoms in a crystal are struck by laser light, their electrons, excited by the light, typically begin moving back and forth together in a regular pattern, resembling nanoscale soldiers marching in a lockstep formation.
But according to a new theory developed by Johns Hopkins researchers, under the right conditions these atoms will rebel against uniformity. Their electrons will begin moving apart and then joining together again repeatedly like lively swing partners on a dance floor.
Moreover, the researchers say, this atomic freestyle dancing can be controlled, paving the way for tiny computer components that emit less heat and new sensors to detect bio-hazards and medical conditions.
"By choosing particular atoms in the proper configuration and directing the right laser light at them, we could control the behavior of these 'nano-dancers,'" said Alexander E. Kaplan, a professor in the Department of Electrical and Computer Engineering in Johns Hopkins' Whiting School of Engineering. "The essential thing is, these are completely designable atomic structures."
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'Enlightened' atoms stage nano-riot againsts uniformity |
