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Proceedings Paper

Optical rotation of the shrunken multi-lamellar vesicle using optical tweezers
Author(s): Chungil Ha; Kipom Kim; Kyung Eun Lee; Sung Sik Han; Hyuk Kyu Pak
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Paper Abstract

We study a geometrically anisotropic internal nano-layered structure of the shrunken multi-lamellar vesicle(SMLV) by using optical tweezers with a polarized beam. The SMLVs are synthesized from soybean asolectin by using gentle hydration method and has an optically birefringence property, known as a form birefringence. When a laser beam of optical tweezers with an elliptical polarization passes through the material with an optical birefringence, the ordinary and extraordinary components of the laser light experience different phase shift, respectively. Therefore, an optical torque due to the angular momentum conservation can be exerted on the optically birefringence material generating a rotational motion of the system. In this work we analyze the distance between the next bilayers of the membrane structure in SMLV from the experimentally measured data of the rotational motion and propose a simple model in which the SMLV is idealized as a multi-regularly-thin parallel plate structure.

Paper Details

Date Published: 20 August 2009
PDF: 9 pages
Proc. SPIE 7400, Optical Trapping and Optical Micromanipulation VI, 740028 (20 August 2009); doi: 10.1117/12.826764
Show Author Affiliations
Chungil Ha, Pusan National Univ. (Korea, Republic of)
Kipom Kim, Univ. of California, Santa Barbara (United States)
Kyung Eun Lee, Korea Univ. (Korea, Republic of)
Sung Sik Han, Korea Univ. (Korea, Republic of)
Hyuk Kyu Pak, Pusan National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 7400:
Optical Trapping and Optical Micromanipulation VI
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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