About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Mechanical Behavior at the Nanoscale VII
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Presentation Title |
Enhanced Mechanical Actuation of Nanoporous Gold Driven by Electroactive Self-assembled Monolayers |
Author(s) |
Olga Matts, Nadiia Mameka |
On-Site Speaker (Planned) |
Olga Matts |
Abstract Scope |
Nanoporous (np) metals are considered as promising functional materials for actuation. The actuation with np metals exploits the electrocapillary phenomena of metal surfaces, in which surface stress responses to changes of the surface state (e.g. due to adsorption). The surface stress is coupled with stresses of opposite sigh in the metal bulk that results in macroscopic movements of the entire solid.
Surface functionalization of high surface area np metals offers an ideal platform for developing novel actuators. Here, we report electrochemically induced motion of free-standing mm-sized unimodal and hierarchical np Au networks modified with an electroactive ferrocene-terminated self-assembled monolayers. The experiments are carried out using in situ dilatometry in electrolyte. An electric potential is imposed on np Au and modulates transformations of the monolayer by oxidation and reduction of the ferrocene moiety. We observe pronounced actuation strain variations. In the contribution, we discuss an origin of the phenomena. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, |