Optical Tweezers

Part of: Dynamic single-molecule analysis

Optical tweezers are based on the principle of light carrying momentum proportional to its energy and propagation direction. Stable optical trapping of dielectric particles (electrical insulators) occurs upon the interaction between light and the object itself. A laser beam that passes through an object and refracts alters its momentum by bending and changing direction.

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Optical tweezers working principle

Optical tweezers are based on the principle of light carrying momentum proportional to its energy and propagation direction. Stable optical trapping of dielectric particles (electrical insulators) occurs upon the interaction between light and the object itself. A laser beam that passes through an object and refracts alters its momentum by bending and changing direction.