Rostami, Peyman ; Hormozi, Mohammad Ali ; Soltwedel, Olaf ; Azizmalayeri, Reza ; von Klitzing, Regine ; Auernhammer, Günter K. (2024)
Dynamic wetting properties of PDMS pseudo-brushes: Four-phase contact point dynamics case.
In: The Journal of Chemical Physics, 2023, 158 (19)
doi: 10.26083/tuprints-00026515
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
We investigate the wetting properties of PDMS (Polydimethylsiloxane) pseudo-brush anchored on glass substrates. These PDMS pseudobrushes exhibit a significantly lower contact angle hysteresis compared to hydrophobic silanized substrates. The effect of different molar masses of the used PDMS on the wetting properties seems negligible. The surface roughness and thickness of the PDMS pseudo-brush are measured by atomic force microscopy and x-ray reflectivity. The outcome shows that these surfaces are extremely smooth (topologically and chemically), which explains the reduction in contact angle hysteresis. These special features make this kind of surfaces very useful for wetting experiments. Here, the dynamics of the four-phase contact point are studied on these surfaces. The four-phase contact point dynamics on PDMS pseudo-brushes deviate substantially from its dynamics on other substrates. These changes depend only a little on the molar mass of the used PDMS. In general, PDMS pseudo-brushes increase the traveling speed of four-phase contact point on the surface and change the associated power law of position vs time.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Rostami, Peyman ; Hormozi, Mohammad Ali ; Soltwedel, Olaf ; Azizmalayeri, Reza ; von Klitzing, Regine ; Auernhammer, Günter K. |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Dynamic wetting properties of PDMS pseudo-brushes: Four-phase contact point dynamics case |
| Sprache: | Englisch |
| Publikationsjahr: | 5 Februar 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2023 |
| Ort der Erstveröffentlichung: | Melville, NY |
| Verlag: | AIP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | The Journal of Chemical Physics |
| Jahrgang/Volume einer Zeitschrift: | 158 |
| (Heft-)Nummer: | 19 |
| Kollation: | 9 Seiten |
| DOI: | 10.26083/tuprints-00026515 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/26515 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichungsservice |
| Kurzbeschreibung (Abstract): | We investigate the wetting properties of PDMS (Polydimethylsiloxane) pseudo-brush anchored on glass substrates. These PDMS pseudobrushes exhibit a significantly lower contact angle hysteresis compared to hydrophobic silanized substrates. The effect of different molar masses of the used PDMS on the wetting properties seems negligible. The surface roughness and thickness of the PDMS pseudo-brush are measured by atomic force microscopy and x-ray reflectivity. The outcome shows that these surfaces are extremely smooth (topologically and chemically), which explains the reduction in contact angle hysteresis. These special features make this kind of surfaces very useful for wetting experiments. Here, the dynamics of the four-phase contact point are studied on these surfaces. The four-phase contact point dynamics on PDMS pseudo-brushes deviate substantially from its dynamics on other substrates. These changes depend only a little on the molar mass of the used PDMS. In general, PDMS pseudo-brushes increase the traveling speed of four-phase contact point on the surface and change the associated power law of position vs time. |
| ID-Nummer: | Artikel-ID: 194703 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-265153 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Physik Kondensierter Materie (IPKM) 05 Fachbereich Physik > Institut für Physik Kondensierter Materie (IPKM) > Soft Matter at Interfaces (SMI) |
| Hinterlegungsdatum: | 05 Feb 2024 12:17 |
| Letzte Änderung: | 12 Mär 2024 09:20 |
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- Dynamic wetting properties of PDMS pseudo-brushes: Four-phase contact point dynamics case. (deposited 05 Feb 2024 12:17) [Gegenwärtig angezeigt]
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