File(s) under permanent embargo
EWOD driven cleaning of bioparticles on hydrophobic and superhydrophobic surfaces
journal contribution
posted on 2023-05-18, 09:22 authored by Jonsson-Niedziolka, M, Lapierre, F, Coffinier, Y, Parry, SJ, Zoueshtiagh, F, Foat, T, Thomy, V, Boukherroub, REnvironmental air monitoring is of great interest due to the large number of people concerned and exposed to different possible risks. From the most common particles in our environment (e.g. byproducts of combustion or pollens) to more specific and dangerous agents (e.g. pathogenic microorganisms), there are a large range of particles that need to be controlled. In this article we propose an original study on the collection of electrostatically deposited particles using electrowetting droplet displacement. A variety of particles were studied, from synthetic particles (e.g. Polystyrene Latex (PSL) microsphere) to different classes of biological particle (proteins, bacterial spores and a viral simulant). Furthermore, we have compared ElectroWetting-On-Dielectric (EWOD) collecting efficiency using either a hydrophobic or a superhydrophobic counter electrode. We observe different cleaning efficiencies, depending on the hydrophobicity of the substrate (varying from 45% to 99%). Superhydrophobic surfaces show the best cleaning efficiency with water droplets for all investigated particles (MS2 bacteriophage, BG (Bacillus atrophaeus) spores, OA (ovalbumin) proteins, and PSL).
History
Publication title
Lab on a ChipVolume
11Pagination
490-496ISSN
1473-0197Department/School
School of Natural SciencesPublisher
RSC PublicationsPlace of publication
United KingdomRights statement
Copyright 2011 The Royal Society of ChemistryRepository Status
- Restricted