Dynamic Manipulation of Particles Via Transformative Optofluidic Waveguides

Overview

Journal Sci Rep

Specialty Science

Date 2015 Oct 17

PMID 26471003

Authors

Kang Soo Lee

Kyung Heon Lee

Sang Bok Kim

Byung Hang Ha

Jin Ho Jung

Hyung Jin Sung

Sang Soo Kim

Affiliations

Soon will be listed here.

Abstract

Optofluidics is one of the most remarkable areas in the field of microfluidic research. Particle manipulation with optofluidic platforms has become central to optical chromatography, biotechnology, and μ-total analysis systems. Optical manipulation of particles depends on their sizes and refractive indices (n), which occasionally leads to undesirable separation consequences when their optical mobilities are identical. Here, we demonstrate rapid and dynamic particle manipulation according to n, regardless of size. Integrated liquid-core/solid-cladding (LS) and liquid-core/liquid-cladding (L(2)) waveguides were fabricated and their characteristics were experimentally and theoretically determined. The high and low n particles showed the opposite behaviors by controlling the contrast of their n values to those of the working fluids. The LS waveguide was found to successfully manipulate particles according to n, and the L(2) waveguide was found to provide additional system stability and flexibility, compared to the LS system.

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