2024 | Tanja Eder, Andreas Mautner, Yufeng Xu, Michael R. Reithofer, Alexander Bismarck, Jia Min Chin
This study presents a method for creating transparent polydimethylsiloxane (PDMS) surfaces with covalently attached lubricants to enhance anti-adhesion performance. The research addresses the challenge of hydrophobic recovery and silica-like layer formation on PDMS substrates, which are common issues in achieving stable, functionalized surfaces. By extracting low molecular weight (LMW) species and optimizing plasma activation parameters, the team successfully functionalized PDMS with fluorinated polysiloxane brushes, resulting in surfaces with improved anti-adhesion and anti-icing properties. The functionalized surfaces exhibited reduced solid adhesion and ice adhesion, demonstrating their potential for non-stick and anti-icing applications. The surfaces maintained optical transparency and showed enhanced droplet mobility, which is crucial for applications requiring light transmission, such as optoelectronic displays and solar harvesters. The study also highlights the importance of surface functionalization in minimizing biofouling and improving the performance of PDMS-based devices. The results indicate that the developed method can be applied to both hard and soft substrates, offering a versatile approach for creating functionalized surfaces with desired properties. The findings contribute to the development of advanced materials for various applications, including flexible sensors and energy systems.This study presents a method for creating transparent polydimethylsiloxane (PDMS) surfaces with covalently attached lubricants to enhance anti-adhesion performance. The research addresses the challenge of hydrophobic recovery and silica-like layer formation on PDMS substrates, which are common issues in achieving stable, functionalized surfaces. By extracting low molecular weight (LMW) species and optimizing plasma activation parameters, the team successfully functionalized PDMS with fluorinated polysiloxane brushes, resulting in surfaces with improved anti-adhesion and anti-icing properties. The functionalized surfaces exhibited reduced solid adhesion and ice adhesion, demonstrating their potential for non-stick and anti-icing applications. The surfaces maintained optical transparency and showed enhanced droplet mobility, which is crucial for applications requiring light transmission, such as optoelectronic displays and solar harvesters. The study also highlights the importance of surface functionalization in minimizing biofouling and improving the performance of PDMS-based devices. The results indicate that the developed method can be applied to both hard and soft substrates, offering a versatile approach for creating functionalized surfaces with desired properties. The findings contribute to the development of advanced materials for various applications, including flexible sensors and energy systems.