Dielectrophoretic classification of fibres: principles and application to glass fibres suspended in air

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU130338" target="_blank" >RIV/00216305:26210/18:PU130338 - isvavai.cz</a>
Result on the web
<a href="https://www.epj-conferences.org/articles/epjconf/pdf/2019/18/epjconf_efm18_02053.pdf" target="_blank" >https://www.epj-conferences.org/articles/epjconf/pdf/2019/18/epjconf_efm18_02053.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Dielectrophoretic classification of fibres: principles and application to glass fibres suspended in air
Original language description
Particles exposed to an electric field experience forces that influence their movement. This effect can be used for filtration of air, or for size classification of aerosols. The motion of charged particles in a non-uniform electric field is called electrophoresis. Two processes are involved in this phenomenon: 1) charging of particles and 2) electrical mobility separation. If fibres are exposed to electrophoresis, they are separated on the basis of two parameters: diameter and length. Regrettably, as naturally occurring fibres are polydisperse both in diameter and length, the electrophoresis is not very efficient in length classification. In contrast, dielectrophoresis is the motion of electrically neutral particles in a non-uniform electric field due to the induced charge separation within the particles. As deposition velocity of fibres induced by dielectrophoretic force strongly depends on length and only weakly on diameter, it can be used for efficient length classification. Principles of length classification of conducting and non-conducting fibres are presented together with design of a fibre classifier. Lastly, images of motion of fibres recorded by high-speed camera are depicted.
Czech name
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Czech description
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Project
<a href="/en/project/GA18-25618S" target="_blank" >GA18-25618S: Research of the effect of the non-stationary flow on the transport of fibers in successively bifurcating mini-channels</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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