Rostami, Peyman ; Hormozi, Mohammad Ali ; Soltwedel, Olaf ; Azizmalayeri, Reza ; Klitzing, Regine von ; 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
Article, Secondary publication, Publisher's Version
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Item Type: | Article |
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Type of entry: | Secondary publication |
Title: | Dynamic wetting properties of PDMS pseudo-brushes: Four-phase contact point dynamics case |
Language: | English |
Date: | 5 February 2024 |
Place of Publication: | Darmstadt |
Year of primary publication: | 2023 |
Place of primary publication: | Melville, NY |
Publisher: | AIP Publishing |
Journal or Publication Title: | The Journal of Chemical Physics |
Volume of the journal: | 158 |
Issue Number: | 19 |
Collation: | 9 Seiten |
DOI: | 10.26083/tuprints-00026515 |
Corresponding Links: | |
Origin: | Secondary publication service |
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. |
Identification Number: | Artikel-ID: 194703 |
Status: | Publisher's Version |
URN: | urn:nbn:de:tuda-tuprints-265153 |
Classification DDC: | 500 Science and mathematics > 530 Physics 500 Science and mathematics > 540 Chemistry |
Divisions: | 05 Department of Physics > Institute for Condensed Matter Physics > Soft Matter at Interfaces (SMI) |
Date Deposited: | 05 Feb 2024 12:17 |
Last Modified: | 09 Feb 2024 07:34 |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/26515 |
PPN: | 515356468 |
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