optical tweezer
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English
Noun
optical tweezer (plural optical tweezers)
- A scientific instrument that uses a highly focused laser beam to hold and move the microscopic or smaller objects such as atoms and droplets, in a manner similar to tweezers.
- 2003, L. Allen, Stephen M. Barnett, Miles J. Padgett, Optical Angular Momentum, page 240:
- This angular momentum has been transferred to macroscopic particles trapped in an optical tweezer causing them to rotate.
- 2006, Banafshe Larijani, Colin A. Rosser, Rudiger Woscholski, Chemical Biology: Techniques and Applications, page 207:
- In order to make calibrated measurements from single molecules two more items are required: (1) a four-quadrant photodiode position sensor (4QD) to accurately measure the position of the bead held in the optical tweezer (Figure 12.5); […]