Nascimento et al., "High-throughput sorting and analysis of human sperm with a ring-shaped laser trap," Biomedical Microdevices, vol.
Berns, "Monitoring sperm mitochondrial respiration response in a laser trap using ratiometric fluorescence," in Optical Trapping and Optical Micromanipulation II, Proceedings of the SPIE 5930, pp.
Ashkin, Forces of a single-beam gradient laser trap
on a dielectric sphere in the ray optics regime, Biophys.
Once the pieces have been cut, the laser trap
can hold them in place, or--if a new, more powerful trap being built works as planned--move them around at will.
They did so by adding a feedback loop to the laser trap
. That allowed them to record the force with which the actin filament tried to escape the grip of the laser beams, says Spudich.
Laser trap hardware usually attaches to a commercial microscope (Cell Robotics favors a model built by Olympus Corp., Lake Success, NY).
"In the early days, I dreamed of trapping biological particles," says Arthur Ashkin of the laser traps he invented.
The Cheetah's reaction time to laser traps
was less than impressive, although its price appeals.
"Right now, the technique we have is suitable for providing nearly stopped atoms for loading into magnetic or laser traps
," says William D.