Optical sorting and detection of sub-micron objects in a motional standing wave
Abstract
An extended interference pattern close to surface may result in both a transmissive or evanescent surface fields for large area manipulation of trapped particles. The affinity of differing particle sizes to a moving standing wave light pattern allows us to hold and deliver them in a bi-directional manner and importantly demonstrate experimentally particle sorting in the sub-micron region. This is performed without the need of fluid flow (static sorting). Theoretical calculations experimentally confirm that certain sizes of colloidal particles thermally hop more easily between neighboring traps. A new generic method is also presented for particle position detection in an extended periodic light pattern and applied to characterization of optical traps and particle behavior
Cite
@article{arxiv.physics/0509054,
title = {Optical sorting and detection of sub-micron objects in a motional standing wave},
author = {Tomas Cizmar and Martin Siler and Mojmir Sery and Pavel Zemanek and Veneranda Garces-Chavez and Kishan Dholakia},
journal= {arXiv preprint arXiv:physics/0509054},
year = {2015}
}
Comments
5 pages, 6 figures, Optical Trapping paper