Presentation + Paper
25 August 2015 Studies on shape anisotropy in red blood cells
Author Affiliations +
Abstract
Asymmetric particles, such as biological cells, often experience torque under optical tweezers. The cause is believed to be either birefringence or unbalanced scattering forces. The estimate of torque relies on the accurate measurement of rotational motion. Here we present a new technique to quantify the asymmetry of trapped particles relying upon the cross coupling between rotational and translational Brownian motion. We observe that RBC does indeed show cross coupling indicating asymmetry of the shape. Further we also show by polarimetry that the retardance of the RBC is not sufficient to make it rotate since the scattering torque is much higher.
Conference Presentation
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Basudev Roy, Argha Mondal, Sudipta Bera, and Ayan Banerjee "Studies on shape anisotropy in red blood cells", Proc. SPIE 9548, Optical Trapping and Optical Micromanipulation XII, 95481Z (25 August 2015); https://doi.org/10.1117/12.2191125
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Particles

Optical tweezers

Scattering

Birefringence

Anisotropy

Blood

Correlation function

RELATED CONTENT


Back to Top