laser tweezers


Also found in: Medical.

laser tweezers

[′lā·zər ‚twē·zərz]
(optics)
A laser trap used to hold microscopic organisms and their organelles and move them through the objective of an optical microscope without apparent damage. Also known as optical tweezers.
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A new set of laser tweezers offers scientists unprecedented control over objects just tens of billionths of a meter in size.
More recently, laser tweezers have been used in combination with computer tracking software and robotic technology for high-throughput sorting and measurement of sperm characteristics [15-19].
The NanoTracker operates with laser tweezers and can trap, track and detect nanoparticles solely with light.
Multiple optics systems can be installed and retracted from the optical path, part of what Nikon calls "infinity optics." Potential additions to the stratum structure include the simultaneous use of laser tweezers, a photoactivation unit, and multiple epi-fluorescence turrets.
The available microscope port also enables system modification for alternate applications, with potential add-ons, such as optical trap laser tweezers, for high-precision micromanipulation of microscopic particles, or an additional camera for high-resolution imaging.
Beyond GEM4, however, there are other consortia of mission-complementary higher ed partners now applying atomic force microscopy, laser tweezers, and nanoscale staples to spur new discoveries in human genome experimentation--fighting diseases like botulism, malaria, sickle cell anemia, and pancreatic cancer.
Directed positioning of micronuclei in Paramecium tetraurelia with laser tweezers: absence of detectable damage after manipulation.
His ExxonMobil coworker Zhengdong Cheng then put a solution containing the disks under a microscope and illuminated the sample with laser tweezers. Cheng found that the light would not only grab a disk but also bounce off the disk in twin, opposite-facing beams, like those of a lighthouse.
At a time when current antibiotics are becoming less effective against bacteria, researchers are turning to laser tweezers to aid against antibiotic resistance.
The new techniques of atomic force microscopy (AFM; or scanning force microscopy) [1-4] and optical trapping (optical or laser tweezers) [5, 6] have allowed us to locate individual atoms and molecules on surfaces and to manipulate cells directly.