Characterization of optofluidic devices for the sorting of sub-micrometer particles

James White, Cyril Laplane, Reece P. Roberts, Louise J. Brown, Thomas Volz, David W. Inglis*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In this work, we investigate methods of fabricating a device for the optical actuation of nanoparticles. To create the microfluidic channel, we pursued three fabrication methods: SU-8 to molded polydimethylsiloxane soft lithography, laser etching of glass, and deep reactive ion etching of fused silica. We measured the surface roughness of the etched sidewalls, and the laser power transmission through each device. We then measured the radiation pressure on 0.5-µm particles in the best-performing fabricated device (etched fused silica) and in a square glass capillary.

Original languageEnglish
Pages (from-to)271-276
Number of pages6
JournalApplied Optics
Issue number2
Publication statusPublished - 10 Jan 2020


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