Hybrid (PI-PDMS) Superhydrophobic Wearable Dry-Patching Flexible and Transparent Substrate

Autor: Yongjin Kim, Seung Man Kim, Jae Hak Lee, Joon Yub Song
Rok vydání: 2018
Předmět:
Zdroj: 2018 7th Electronic System-Integration Technology Conference (ESTC).
Popis: The hybrid thin film is fabricated by using polyimide (PI) and Polydimethylsiloxane (PDMS) to take combined advantages of their transparency, thermal stability and stretchability. Furthermore, another importance of such subtract is superhydrophobicity, having highly water repellent, dustproof and self-cleaning effect which is beneficial for its long-term performance. The demand for dry patching has been increased as compared with wet patching films due to optical transmittance and long term optimization, the patching devices mechanism for those devices can be mechanical deformation experienced with bending, pressing, twisting and pressing, without any compromise on the comfort of the user, those mechanical characteristics leads towards the adhesion of the substrate via van der Waals force without using any wet adhesion. The actively explored field of flexible and wearable applications are in healthcare and artificial electronic skins which are interestingly capable of detecting stress, strain, pain and temperature in real-time health monitoring. Since superhydrophobic properties combine with dry patching techniques provide a wide range of practical applications for the platform of the wearable dry patching substrate, it is expected that such works have an impact on flexible hybrid electronic (FHE) devices which can be rolled, stretched and bent. The fabricated dry patching superhydrophobic substrate utilizing a polymer casting method showing a static CA and CAH angle of179o and 10°, respectively, by creating the air pocket between the micro pillars $(30\mu \mathrm {m})$ which counterbalances the water droplet on the surface. Such hybrid substrates are widely used in microelectronics applications; it provides more desirable properties in many fields of application (mechanical, thermal, optical and chemical). In this article, we discussed the fabrication of a dry-patching substrate using hybrid film that has a superhydrophobic surface
Databáze: OpenAIRE