Microfluidic droplet grating for reconfigurable optical diffraction

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)1890-1892
Journal / PublicationOptics Letters
Volume35
Issue number11
Publication statusPublished - 1 Jun 2010
Externally publishedYes

Abstract

This Letter presents a reconfigurable optical diffraction grating using multiphase droplets on a microfluidic chip. The uniform and evenly spaced circular droplets are generated by continuously dispersing two immiscible liquids into a T junction to produce plugs, which are then transformed into a circular shape at a sudden expansion of the microchannel. In experiments, the droplet grating shows a detection limit of ∼6.3 × 10-5 when used as an optofluidic refractometer and produces different colors as a color filter. Such a grating has the advantages of high stability and wide tunability in droplet size, grating period, and refractive index, making it promising for biochemical and bio- material applications. © 2010 Optical Society of America.

Bibliographic Note

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Citation Format(s)

Microfluidic droplet grating for reconfigurable optical diffraction. / Liu, A. Q.; Yu, J. Q.; Yang, Y. et al.
In: Optics Letters, Vol. 35, No. 11, 01.06.2010, p. 1890-1892.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review