Abstract

The placement of the beam focus corresponding with the center of living matter (such as cells) in an optical tweezer can result in photodamage. We advance a scheme here that locates the focus of the beam either above or below the matter to pull and push relative to the beam axis in a predominant lateral sense based on the resultant action of scattering and gradient forces. Switching to a laser that acts oppositely serves to restore the axial position of the matter. Although an exact value could not be derived due to the statistical nature of Brownian perturbations and time frame considerations, we simulated the optical force fields to visualize the effective force envelope. The lateral optical push–pull operation was conducted experimentally on polystyrene beads in which the motion manipulation efficacy was characterized.

©2012 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Optical stirring in a droplet cell bioreactor

Murat Muradoglu, Thuong Le, Chun Yat Lau, Oi Wah Liew, and Tuck Wah Ng
Biomed. Opt. Express 3(10) 2465-2470 (2012)

Optical pulling and pushing forces exerted on silicon nanospheres with strong coherent interaction between electric and magnetic resonances

Hongfeng Liu, Mingcheng Panmai, Yuanyuan Peng, and Sheng Lan
Opt. Express 25(11) 12357-12371 (2017)

Tailoring optical pulling force on gain coated nanoparticles with nonlocal effective medium theory

X. Bian, D. L. Gao, and L. Gao
Opt. Express 25(20) 24566-24578 (2017)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Supplementary Material (1)

» Media 1: MPG (9142 KB)     

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription