Dokument: Microfluidic Femtoliter Droplets Exposed to Laser Potentials
| Titel: | Microfluidic Femtoliter Droplets Exposed to Laser Potentials | |||||||
| URL für Lesezeichen: | https://docserv.uni-duesseldorf.de/servlets/DocumentServlet?id=60877 | |||||||
| URN (NBN): | urn:nbn:de:hbz:061-20221026-105818-0 | |||||||
| Kollektion: | Publikationen | |||||||
| Sprache: | Englisch | |||||||
| Dokumententyp: | Wissenschaftliche Abschlussarbeiten » Studienabschlussarbeit (z.B. Bachelor-, Master-, Examensarbeit) | |||||||
| Medientyp: | Text | |||||||
| Autor: | Horstmann, Sebastian [Autor] | |||||||
| Dateien: |
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| Beitragende: | Prof. Dr. Egelhaaf, Stefan [Gutachter] Prof. Dr. Görlitz, Axel [Gutachter] | |||||||
| Stichwörter: | Microfluidics, Droplet generator, Soft matter, Laser tweezers, Colloid assembly, Emulsion physics, Brownian dynamics | |||||||
| Dewey Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik » 530 Physik | |||||||
| Beschreibung: | Droplet emulsions feature a variety of advantages over generic colloidal systems. Their phase composition can be adjusted and it is possible to form them on demand. However, mesoscopic particle dispersions perform Brownian motion, and often the subject of studies is their reaction to laser potential exposure. Thus, droplets must be generated uniformly and in micrometer sizes to be sufficiently small. Soft lithography fabrication is used to build a microfluidic platform for femtoliter-volume droplet formation. Also, droplet emulsions easily break down due to free energy preferences. This issue is overcome by adding fluorosurfactant to the oil medium and achieving probe stabilities of at least a month. Their refractive index is tuned by adding sucrose to the dispersed phase to manipulate emulsions with laser forces. It is shown that droplet emulsions present an equally well-suited model system as that of colloidal dispersions. Moreover, proof is provided that rough laser potentials induce sub-diffusion in the dynamics of dilute droplet emulsions, while cage constraints dominate for dense probes. | |||||||
| Lizenz: |  Dieses Werk ist lizenziert unter einer Creative Commons Namensnennung 4.0 International Lizenz | |||||||
| Fachbereich / Einrichtung: | Mathematisch- Naturwissenschaftliche Fakultät » WE Physik | |||||||
| Dokument erstellt am: | 26.10.2022 | |||||||
| Dateien geändert am: | 26.10.2022 |
