laser trap


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laser trap

[′lā·zər ‚trap]
(optics)
A device for confining atoms, molecules, and larger neutral particles up to 10 micrometers in diameter, consisting of a focused laser beam tuned to a frequency below an atomic resonance, which attracts the particles toward regions of high laser intensity.
References in periodicals archive ?
Most of the current work on OT moves the laser trap position to the desired destination of the particle and lets the particle drift to the laser position.
The ad said the device would give drivers an extra pair of eyes and help them see speed cameras and laser trap ambushes before they got to them.
Then, with the laser trap switched off, they turned on a magnetic trap that allowed the warmer atoms to escape, taking their excess energy with them.
Operated in tandem with a microscope and, in some cases, a laser trap--which can grab and move pieces of a cell that have been cut--the laser "microbeams" have been used to sever pieces of chromosomes during cell mitosis, to puncture the cell walls of plants to allow entry of foreign DNA, and to induce the fusion of two cells held in a laser trap.
Block's and Spudich's groups independently developed the laser trap further to apply it to the study of motor proteins.
In biological work, the wavelength chosen for a laser trap can range from the 514 nm of an argon laser to the 1.
The remote-controlled car enthusiast and founder of ROSSA (Radio Operated Scale Speed Association) explained the new Guinness World Record can only be officially set if the car passes laser traps measuring the speed accurately.