Dynamics of an optically trapped particle

Files

Author

Flaherty Justin, Cleveland State University

Faculty Advisors

Resnick, Andrew

Description

Particles trapped in a laser experience a linear restoring force that keeps them centered in the trap and will undergo restricted Brownian motion. The Brownian motion causes a change in the scattered laser light. The scattered light is projected onto a Quadrant Photodiode and can be used to obtain the Mean Squared Displacement of the particle, as well as the linear spring constant of the laser trap. The spring constant can be used to obtain the force applied by the laser trap, which is in the realm of piconewtons.

Publication Date

2015

College

College of Sciences and Health Professions

Disciplines

Life Sciences | Medicine and Health Sciences | Physical Sciences and Mathematics

Recommended Citation

Justin, Flaherty, "Dynamics of an optically trapped particle" (2015). Undergraduate Research Posters 2015. 29.
https://engagedscholarship.csuohio.edu/u_poster_2015/29