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Photoactivated Polymeric Bilayer Actuators Fabricated via 3D Printing
Journal article   Peer reviewed

Photoactivated Polymeric Bilayer Actuators Fabricated via 3D Printing

Daniel E Hagaman, Steven Leist, Jack Zhou and Hai-Feng Ji
ACS applied materials & interfaces, v 10(32), pp 27308-27315
15 Aug 2018
DOI: https://doi.org/10.1021/acsami.8b08503
PMID: 30036469
Featured in Collection :   UN Sustainable Development Goals @ Drexel

Abstract

smart materials bilayer photoactivated 3D printing; azobenzene poly(siloxanes)
4D printing is an emerging additive manufacturing technology that combines the precision of 3D printing with the versatility of smart materials. 4D printed objects can change their shape over time with the application of a stimulus (i.e., heat, light, moisture). Light driven smart materials are attractive because light is wireless, remote, and can induce a rapid shape change. Herein, we present a method for fabricating polymeric bilayer actuators via 3D printing which reversibly change their shape upon exposure to light. The photoactive layer consists of a poly­(siloxane) containing pendant azobenzene groups. Two different photoactive polymers were synthesized, and the photomechanical effect displayed by the bilayers was evaluated. These bilayers exhibit rapid actuation with full cycles completed within seconds, and photo generated stresses ranging from 1.03 to 1.70 MPa.

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8 Record Views
70 citations in Web of Science
78 citations in Scopus

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UN Sustainable Development Goals (SDGs)

This publication has contributed to the advancement of the following goals:

#7 Affordable and Clean Energy

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Web of Science research areas
Materials Science, Multidisciplinary
Nanoscience & Nanotechnology
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