Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N09: Emerging Trends in Soft Microscale Mechanics II
11:30 AM–2:30 PM,
Wednesday, March 8, 2023
Room: Room 132
Sponsoring
Unit:
DSOFT
Chair: Megan Valentine, University of California, Santa Barbara
Abstract: N09.00013 : The effect of water uptake on the mechanical behavior of hybrid thin films fabricated by sequential infiltration synthesis (SIS)
1:54 PM–2:06 PM
Presenter:
Shachar Keren
(Technion – Israel Institute of Technology)
Authors:
Shachar Keren
(Technion – Israel Institute of Technology)
Cynthia Bukowski
(University of Massachusetts Amherst)
Myounguk Kim
(University of Massachusetts Amherst)
Alfred J Crosby
(University of Massachusetts Amherst)
Noy Cohen
(Technion - Israel Institute of Technology)
Tamar Segal-Peretz
(Technion - Israel Institute of Technolog)
This research studies the mechanical response of SIS-based hybrid thin films and probes the effect of water uptake on their behavior. Hybrid thin films were fabricated by growing AlOx within PMMA films via SIS process, using trimethylaluminum and H2O as precursors. Tensile measurements of the thin films (~50 nm, supported by water surface) reveal counter-intuitive behavior with a softening effect despite the growth of AlOx clusters. Water uptake measurements carried out via in-situ microgravimetric measurements indicate that aluminum-oxide induces water uptake from the aqueous environment, implying a possible interaction between AlOx and water.
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