Dynamics of a large dielectric particle in a dual optical trap

Authors

Michael Lawrence Castañares ⋅ PH Medical Biophysics Group, Physics Department, University of San Carlos
Lester Geonzon ⋅ PH Medical Biophysics Group, Physics Department, University of San Carlos
Michael Gavriel Reyes ⋅ PH Medical Biophysics Group, Physics Department, University of San Carlos
Renante Violanda ⋅ PH Medical Biophysics Group, Physics Department, University of San Carlos
Rommel Bacabac ⋅ PH Medical Biophysics Group, Physics Department, University of San Carlos

Abstract

This study presents the behavior of a large particle, 2.5 μm bead, in a dual optical trap. The system is modeled using a Langevin equation with a localized gradient force due to the beam trap. The position distribution of the bead is investigated as the separation between the two beams is increased. The experimental results confirm our simulation, which shows that there exists a critical range of beam separation, where the particle tends to be pulled strongly by either traps as demonstrated by the shift and skew on the particle’s position distribution. For large separation, the system reduces to a single beam optical trap.

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Issue

2012: Proceedings of the 30th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP2012-PA-20

Section

Poster Session PA

Published

2012-10-22

How to Cite

[1]

ML Castañares, L Geonzon, MG Reyes, R Violanda, and R Bacabac, Dynamics of a large dielectric particle in a dual optical trap, Proceedings of the Samahang Pisika ng Pilipinas 30, SPP2012-PA-20 (2012). URL: https://proceedings.spp-online.org/article/view/SPP2012-PA-20.