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Electrochemically Responsive 3D Nanoarchitectures.

Published version
Peer-reviewed

Repository DOI


Change log

Authors

Wang, Heng 
Sanders, Kate A 

Abstract

Responsive nanomaterials are being developed to create new unique functionalities such as switchable colors and adhesive properties or other programmable features in response to external stimuli. While many existing examples rely on changes in temperature, humidity, or pH, this study aims to explore an alternative approach relying on simple electric input signals. More specifically, 3D electrochromic architected microstructures are developed using carbon nanotube-Tin (Sn) composites that can be reconfigured by lithiating Sn with low power electric input (≈50 nanowatts). These microstructures have a continuous, regulated, and non-volatile actuation determined by the extent of the electrochemical lithiation process. In addition, this proposed fabrication process relies only on batch lithographic techniques, enabling the parallel production of thousands of 3D microstructures. Structures with a 30-97% change in open-end area upon actuation are demonstrated and the importance of geometric factors in the response and structural integrity of 3D architected microstructures during electrochemical actuation is highlighted.

Description

Publication status: Published


Funder: Natural Sciences and Engineering Research Council of Canada; doi: http://dx.doi.org/10.13039/501100000038

Keywords

carbon nanotubes, electrochemical actuation, hierarchical 3D nanoarchitectures, responsive structures

Journal Title

Adv Mater

Conference Name

Journal ISSN

0935-9648
1521-4095

Volume Title

Publisher

Wiley
Sponsorship
European Commission Horizon 2020 (H2020) ERC (866005)
EPSRC (EP/V050923/1)