Optical levitation

（重定向自Laser levitation）

A force diagram showing how vertical and lateral stabilization occurs in a vertically oriented optical trap.

Optical levitation is a method developed by Arthur Ashkin whereby a material is levitated against the downward force of gravity by an upward force stemming from photon momentum transfer. Typically photon radiation pressure of a vertical upwardly directed and focused laser beam of enough intensity counters the downward force of gravity to allow for a stable optical trap capable of holding small particles in suspension.

单词	Laser levitation
释义	Laser levitation 英语百科 Optical levitation （重定向自Laser levitation） Optical levitation is a method developed by Arthur Ashkin whereby a material is levitated against the downward force of gravity by an upward force stemming from photon momentum transfer. Typically photon radiation pressure of a vertical upwardly directed and focused laser beam of enough intensity counters the downward force of gravity to allow for a stable optical trap capable of holding small particles in suspension.
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