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dc.contributor.authorFoat, T. G.
dc.contributor.authorSellors, W. J.
dc.contributor.authorWalker, M. D.
dc.contributor.authorRachwal, P. A.
dc.contributor.authorJones, J. W.
dc.contributor.authorDespeyroux, D. D.
dc.contributor.authorCoudron, L.
dc.contributor.authorMunro, I.
dc.contributor.authorMcCluskey, D. K.
dc.contributor.authorTan, C. K L
dc.contributor.authorTracey, M. C.
dc.date.accessioned2017-05-25T11:29:57Z
dc.date.available2017-05-25T11:29:57Z
dc.date.issued2016-05-01
dc.identifier.citationFoat , T G , Sellors , W J , Walker , M D , Rachwal , P A , Jones , J W , Despeyroux , D D , Coudron , L , Munro , I , McCluskey , D K , Tan , C K L & Tracey , M C 2016 , ' A prototype personal aerosol sampler based on electrostatic precipitation and electrowetting-on-dielectric actuation of droplets ' , Journal of Aerosol Science , vol. 95 , pp. 43-53 . https://doi.org/10.1016/j.jaerosci.2016.01.007
dc.identifier.issn0021-8502
dc.identifier.otherPURE: 10426558
dc.identifier.otherPURE UUID: a5e4bd18-08d8-4855-a4c9-f34325e31716
dc.identifier.otherScopus: 84957058329
dc.identifier.urihttp://hdl.handle.net/2299/18217
dc.descriptionThis is an Open Access article, distributed under the terms of the Open Government Licence. http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Crown Copyright © 2016. Published by Elsevier Ltd. All rights reserved. The version of record (T. G. Foat, et al, 'A prototype personal aerosol sampler based on electrostatic precipitation and electrowetting-on-dielectric actuation of droplets', Journal of Aerosol Science, Vol. 95, pp. 43-53, May 2016) is available online at doi: https://doi.org/10.1016/j.jaerosci.2016.01.007.
dc.description.abstractAn electrostatic precipitator (ESP) based personal sampler with a laboratory based electrowetting-on-dielectric (EWOD) concentrator could provide a high concentration rate personal aerosol sampler system. A prototype system has been developed based on the concept of a lightweight personal ESP collecting aerosol particles onto a hydrophobic surface followed by the use of an EWOD actuated droplet system to transfer the deposited sample into a microlitre size water droplet.A personal sampler system could provide military or civilian personnel with a wide area biological monitoring capability supplying information on who has been infected, what they have been infected with, how much material they were exposed to and possibly where and when they were infected. Current commercial-off-the-shelf (COTS) personal sampler solutions can be bulky and use volumes of water to extract the sample that are typically a thousand times greater than the proposed method.Testing of the prototype ESP at a sample flow rate of 5Lmin-1 demonstrated collection efficiencies greater than 80% for sodium fluorescein particles larger than 4μm diameter and of approximately 50% at 1.5μm. The ESP-EWOD system collection efficiency measured for Bacillus atrophaeus (BG) spores with an air sample flow rate of 20L min-1 was 2.7% with a concentration rate of 1.9×105 min-1. This was lower than expected due to the corona ions from the ESP affecting the hydrophobicity of the collection surface and hence the EWOD efficiency. However, even with this low efficiency the concentration rate is more than an order of magnitude higher than the theoretical maximum of the best current COTS personal sampler. For an optimised system, ESP-EWOD system efficiency should be higher than 32% with a comparable increase in concentration rate.en
dc.format.extent11
dc.language.isoeng
dc.relation.ispartofJournal of Aerosol Science
dc.rightsOpen
dc.subjectAerosol collection
dc.subjectElectrostatic precipitator
dc.subjectElectrowetting-on-dielectric
dc.subjectEWOD
dc.subjectPersonal sampler
dc.subjectMaterials Science(all)
dc.subjectEnvironmental Chemistry
dc.subjectPollution
dc.titleA prototype personal aerosol sampler based on electrostatic precipitation and electrowetting-on-dielectric actuation of dropletsen
dc.contributor.institutionSchool of Engineering and Technology
dc.contributor.institutionMicro Electro-Mechanical Systems
dc.contributor.institutionUniversity of Hertfordshire
dc.contributor.institutionCentre for Engineering Research
dc.contributor.institutionMicrofluidics and Microengineering
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=84957058329&partnerID=8YFLogxK
dc.relation.schoolSchool of Engineering and Technology
dc.description.versiontypeFinal Published version
dcterms.dateAccepted2016-05-01
rioxxterms.versionAM
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1016/j.jaerosci.2016.01.007
rioxxterms.licenseref.uriOther
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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