2026-09-19T03:24:21Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/415442022-01-13T07:54:29Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Joel Voldman.
Puchała, Katarzyna Anna
Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2008-05-19T14:58:55Z
2008-05-19T14:58:55Z
2007
http://hdl.handle.net/1721.1/41544
220909770
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
"February 2007."
Includes bibliographical references (leaves 54-55).
Detection of pathogenic microorganisms is a significant challenge in medicine, environmental protection and biological threat safety because samples are often contaminated. This work presents a method of separating bacterial spores from typical air contaminants such as sand or soot by means of dielectrophoresis. Spores of B. subtilis as well as model airborne interferents are characterized electrically; based on their properties, schemes of their electrical separation are proposed. The separation based on the frequency of applied electric field is implemented using microfabricated chips. To relate the data obtained from these microtools to particle concentration, a computer program is designed, implemented and validated. Experiments show that separation of bacterial spores from soot and sand suspended in water based on electrical properties of particles is possible and may serve as a way of enhancing spore concentration in mixtures.
by Katarzyna Anna Puchała.
M.Eng.
55 leaves
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by
copyright. They may be viewed from this source for any purpose, but
reproduction or distribution in any format is prohibited without written
permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Electrical Engineering and Computer Science.
Selective microorganism concentration using a dielectrophoresis-based microfabricated device
Thesis
application/pdf
false
Publication
unknown
unknown
<Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="22c30ef1-510c-4cca-bb9b-829257875d1e">
<Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type>
<Language>eng</Language>
<Title>Selective microorganism concentration using a dielectrophoresis-based microfabricated device</Title>
<PublishedIn>
<Publication>
</Publication>
</PublishedIn>
<PublicationDate>2007</PublicationDate>
<Authors>
<Author>
<DisplayName>Puchała, Katarzyna Anna</DisplayName>
<Affiliation>
<OrgUnit>
</OrgUnit>
</Affiliation>
</Author>
</Authors>
<Editors>
</Editors>
<Publishers>
<Publisher>
<DisplayName>Massachusetts Institute of Technology</DisplayName>
<OrgUnit />
</Publisher>
</Publishers>
<License>http://dspace.mit.edu/handle/1721.1/7582</License>
<Keyword>Electrical Engineering and Computer Science.</Keyword>
<Abstract>Detection of pathogenic microorganisms is a significant challenge in medicine, environmental protection and biological threat safety because samples are often contaminated. This work presents a method of separating bacterial spores from typical air contaminants such as sand or soot by means of dielectrophoresis. Spores of B. subtilis as well as model airborne interferents are characterized electrically; based on their properties, schemes of their electrical separation are proposed. The separation based on the frequency of applied electric field is implemented using microfabricated chips. To relate the data obtained from these microtools to particle concentration, a computer program is designed, implemented and validated. Experiments show that separation of bacterial spores from soot and sand suspended in water based on electrical properties of particles is possible and may serve as a way of enhancing spore concentration in mixtures.</Abstract>
<Access xmlns="http://purl.org/coar/access_right"
>
</Access>
</Publication>