Localized actuation of temperature responsive hydrogel-layers with a PCB-based micro-heater array
Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/Gutachten › Beitrag in Konferenzband › Beigetragen
Beitragende
Abstract
The space-resolved manipulation of a surface can be achieved by triggering a temperature induced swelling response locally by using a micro-heater array. In this work, we present the interaction of (i) a rigid array of heating elements that can be selectively activated and (ii) thermo-responsive hydrogel pillars that respond to the local stimulus change. The heating elements are Platinum wire heaters, which are fabricated via surface micromachining techniques on a printed circuit board (PCB). A polyimide thin film is used as a thin membrane beneath the micro heaters and as a protective encapsulation on top of the micro-heaters. The heaters are arranged in a 10 by 10 array and occupy an area of 15 mm x 15 mm. The UV-structured smart hydrogel layer is made of poly(N-isopropyl-acrylamide) with Lower Critical Solution Temperature (LCST) behavior. The setup features single pillars with a diameter of 750 µm on each single microheater. The design of the system is based on continuum-based simulations using the Temperature Expansion Model in the framework of the Finite-Element tool Abaqus. Based on the simulations, the system's capability for micro-manipulation is assessed. The analysis of the described system offers further insights into the behavior of locally actuated active polymers and their interaction with rigid systems.
Details
Originalsprache | Englisch |
---|---|
Titel | Proceedings of SPIE - The International Society for Optical Engineering |
Redakteure/-innen | Iain A. Anderson, John D. W. Madden, Herbert R. Shea |
Seiten | 49 |
ISBN (elektronisch) | 9781510649590 |
Publikationsstatus | Veröffentlicht - 2022 |
Peer-Review-Status | Nein |
Externe IDs
Scopus | 85132005288 |
---|---|
Mendeley | e5e7beec-ffd9-3aea-ab49-26f7bc08c79a |