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Study of the corona discharge phenomenon for application in pathogen and narcotic detection in aerosol
KTH, School of Electrical Engineering (EES), Microsystem Technology.
2012 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Within this master thesis work, a novel application of a corona discharge is presented. The phenomenon of an electro-hydro-dynamic (EHD) flow is used for the precipitation of airborne particles onto a restricted surface of a non-coronizing electrode. The non-coronizing electrode surface can be replaced by a liquid interface, by which aerosol particles can be transferred from the airflow into a liquid solution, allowing for further analysis. Due to a small volume of the liquid container, the increased concentration of trapped particles will potentially enhance the resolution of the detection system. Aerosol droplets can originate from a human breath, which opens the possibility to utilize the system for narcotics or viruses detection. In this work, effort was laid on adapting a simulation model and an experimental set-up to the concept of the airborne particle trapping. Electrical measurements were conducted to characterize the set-up, through which the main limitations of the input parameters of the system could be extracted. Moreover, an approach for the determination of the upper limit of the applicable voltage was introduced. The data collected was used to build general conclusions and recommendations, relevant to the further research on this topic.

Place, publisher, year, edition, pages
2012. , 72 p.
EES Examensarbete / Master Thesis, XR-EE-MST 2012-001
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-99189OAI: diva2:541459
Educational program
Master of Science - Nanotechnology
Available from: 2012-07-18 Created: 2012-07-18 Last updated: 2012-07-18Bibliographically approved

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