banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Actuation of cantilevers by optical trapping
Rent this article for


Image of FIG. 1.
FIG. 1.

Schematic showing the concept of optically trapped cantilevers.

Image of FIG. 2.
FIG. 2.

Schematic layout of cantilever trapping and detection system. A Raman laser operating at is coupled into port 1 of a fiber optic circulator. The beam at the port 2 output of the circulator is collimated, directed to a standard inverted optical tweezer setup and brought to trapping focus by a 0.65 NA objective lens. Light backscattered from the cantilever is coupled confocally back into port 2 of the circulator and is delivered via port 3 to a detector. The dichroic mirror is a high reflector for the laser light, but transmits visible light from the microscope to the charge-coupled device (CCD) camera.

Image of FIG. 3.
FIG. 3.

Silica cantilever trapping efficiency. Solid line: Trapping efficiency of cantilever as a function of transverse displacement of cantilever from the axis of trapping beam. Dashed line: Theoretical trapping efficiency based on geometrical optics model.

Image of FIG. 4.
FIG. 4.

Confocal backscattered signal from cantilever when excited by laser beam chopped at .


Generic image for table
Table I.

Physical properties of long cantilevers in water with square cross sections. The trapping spring constant is calculated for a trapping beam.


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Actuation of cantilevers by optical trapping