Diffusion-controlled optical elements for optofluidics

Diffusion at the interface between two streams of liquids with different refractive indices, flowing laminarly, creates a controllable concentration gradient and a corresponding refractive index gradient. Using flow rate to change the time over which diffusion occurs in a liquid-liquid ( L 2 ) optic...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2005-10, Vol.87 (18), p.181105-181105-3
Main Authors: Wolfe, Daniel B., Vezenov, Dmitri V., Mayers, Brian T., Whitesides, George M., Conroy, Richard S., Prentiss, Mara G.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Diffusion at the interface between two streams of liquids with different refractive indices, flowing laminarly, creates a controllable concentration gradient and a corresponding refractive index gradient. Using flow rate to change the time over which diffusion occurs in a liquid-liquid ( L 2 ) optical waveguide, we demonstrate an optical splitter and a wavelength filter. The optical splitter comprises two parallel L 2 waveguides which smoothly merge into a single L 2 waveguide by diffusion. The wavelength filter comprises an optical splitter in which the two L 2 waveguides contain an absorbing dye.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2119412