Researchers use laser holograms to trap and control tiny objects the size of single cells

(Natural News) Perspective matters. A narrow beam of light will barely warm your skin, but it will exert an irresistible grip on objects that are mere micrometers or nanometers in diameter. South African researchers demonstrated how a laser beam can steer tiny objects the size of a single human cell. Their technique is called “holographic optical trapping and tweezing.” In…

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