Surface modification of polytetrafluoroethylene thin films by non-coherent UV light and water treatment for electrowetting applications
10.1016/j.porgcoat.2020.105593
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/335329
Tipus de documentArticle
Data publicació2020-12-01
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
The electrowetting on dielectric or EWOD phenomenon is used in a wide range of applications, such as Liquid Lenses, Lab-on-Chip devices, or EWOD displays, among others. Its chemical resistance, electrical stability, ease of application, and low cost make polytetrafluoroethylene (PTFE) the preferred hydrophobic dielectric layer for such applications. However, the hydrophobic behaviour represents a challenge for spin coating other layers over its surface. As a consequence, several techniques are implemented to modify the surface of PTFE. These methods are complex, time-consuming, and produce morphology changes over the surface that are difficult and sometimes impossible to recover. In this work, we propose a new surface modification method that is based on a non-coherent UV light exposition method and a specific water treatment, that lead to a change from hydrophobic to hydrophilic, and a perfect recovery from hydrophilic to hydrophobic behaviour.
CitacióLópez, C. [et al.]. Surface modification of polytetrafluoroethylene thin films by non-coherent UV light and water treatment for electrowetting applications. "Progress in organic coatings", 1 Desembre 2020, vol. 149, p. 1-13.
ISSN0300-9440
Versió de l'editorhttps://www.sciencedirect.com/science/article/pii/S0300944019315978
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
Teflon_draft.pdf | 2,409Mb | Visualitza/Obre | ||
Teflon_draft.pdf | 2,409Mb | Visualitza/Obre |