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Calibration of dynamic holographic optical tweezers for force measurements on biomaterials

✍ Scribed by van der Horst, Astrid; Forde, Nancy R.

Book ID
115410330
Publisher
Optical Society of America
Year
2008
Tongue
English
Weight
755 KB
Volume
16
Category
Article
ISSN
1094-4087

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We present a new method to calibrate a quadrant photodiode used as position detector to monitor latex beads trapped in optical tweezers. The method combines the dragging StokeΓ•s force with the thermal noise analysis (power spectral density (PSD)) of the Brownian motion of the trapped bead. Position