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Self-propulsion of Janus Particles near Polymer-Functionalized Substrates

Heidari, Mojdeh (2021)
Self-propulsion of Janus Particles near Polymer-Functionalized Substrates.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00018882
Ph.D. Thesis, Primary publication, Publisher's Version

Abstract

This thesis presents the self-propulsion of Janus particles near the substrates functionalized with polymer brushes. The self-propulsion is based on self-thermophoresis which is a common mechanism to drive the autonomous motion of particles. Despite recent efforts to understand the mechanism governing the self-propulsion of thermophoretic particles, the interaction of particles with the substrate underneath the particle has remained unclear. However, the interfacial properties of the substrate/fluid interface might influence the interaction between the substrate and the particle, hence altering the particle velocity, orientation, etc. Therefore, it is crucial to achieve in-depth knowledge about the characteristics of the entire system to optimize the active motion of the particle.

Item Type: Ph.D. Thesis
Erschienen: 2021
Creators: Heidari, Mojdeh
Type of entry: Primary publication
Title: Self-propulsion of Janus Particles near Polymer-Functionalized Substrates
Language: English
Referees: Klitzing, Prof. Dr. Regine von ; Andrieu-Brunsen, Prof. Dr. Annette ; Halfmann, Prof. Dr. Thomas ; Liebchen, Prof. Dr. Benno
Date: 2021
Place of Publication: Darmstadt
Collation: vi, 130 Seiten
Refereed: 2 June 2021
DOI: 10.26083/tuprints-00018882
URL / URN: https://tuprints.ulb.tu-darmstadt.de/18882
Abstract:

This thesis presents the self-propulsion of Janus particles near the substrates functionalized with polymer brushes. The self-propulsion is based on self-thermophoresis which is a common mechanism to drive the autonomous motion of particles. Despite recent efforts to understand the mechanism governing the self-propulsion of thermophoretic particles, the interaction of particles with the substrate underneath the particle has remained unclear. However, the interfacial properties of the substrate/fluid interface might influence the interaction between the substrate and the particle, hence altering the particle velocity, orientation, etc. Therefore, it is crucial to achieve in-depth knowledge about the characteristics of the entire system to optimize the active motion of the particle.

Alternative Abstract:
Alternative abstract Language

In dieser Arbeit wird die Fortbewegung von Janus-Partikeln in der Nähe von mit Polymerbürsten funktionalisierten Substraten vorgestellt. Der Selbstantrieb basiert auf der Selbst-Thermophorese, die ein häufig beobachteter Mechanismus ist, der die Fortbewegung der Partikel beschreibt. Trotz jüngster Bemühungen, den Mechanismus zu verstehen, der die Fortbewegung von thermophoretischen Partikeln steuert, bleibt die Wechselwirkung der Partikel mit dem Substrat unter dem Partikel ungeklärt. Die Grenzflächeneigenschaften der Substrat/Fluid-Grenzfläche könnten jedoch dieWechselwirkung zwischen dem Substrat und dem Partikel beeinflussen und somit unter anderem die Partikelgeschwindigkeit verändern. Daher ist es von entscheidender Bedeutung, ein tiefgehendesWissen über die Eigenschaften des gesamten Systems zu erlangen, um die aktive Bewegung des Partikels zu optimieren.

German
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-188829
Classification DDC: 500 Science and mathematics > 530 Physics
Divisions: 05 Department of Physics
05 Department of Physics > Institute for Condensed Matter Physics
05 Department of Physics > Institute for Condensed Matter Physics > Soft Matter at Interfaces (SMI)
Date Deposited: 24 Jun 2021 08:48
Last Modified: 28 Jun 2021 07:13
PPN:
Referees: Klitzing, Prof. Dr. Regine von ; Andrieu-Brunsen, Prof. Dr. Annette ; Halfmann, Prof. Dr. Thomas ; Liebchen, Prof. Dr. Benno
Refereed / Verteidigung / mdl. Prüfung: 2 June 2021
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