4.6 Article

Calibration of nonspherical particles in optical tweezers using only position measurement

Journal

OPTICS LETTERS
Volume 38, Issue 8, Pages 1244-1246

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OL.38.001244

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Funding

  1. Australian Research Council [DP1095880]
  2. Australian Research Council [DP1095880] Funding Source: Australian Research Council

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Nonspherical probe particles are an attractive choice for optically-trapped scanning probe microscopy. We show that it is possible to calibrate a trap with a nonspherical particle using only position measurements, without requiring measurement of orientation, using a pseudopotential based on the position occupation probability. It is not necessary to assume the force is linear with displacement. (C) 2013 Optical Society of America

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