One‐Component Dual Actuation: Poly(NIPAM) Can Actuate to Stable 3D Forms with Reversible Size Change. Issue 44 (22nd September 2016)

• Record Type: Journal Article
• Authors: Liu, Li; Ghaemi, Ali; Gekle, Stephan; Agarwal, Seema
• Is Part Of: Advanced materials. Volume 28:Issue 44(2016)
• Page Start: 9792
• Page End: 9796
• Publication Date: 2016-09-22
• Subjects: 3D -- one component -- size actuation -- stable -- ultra‐fast; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201603677
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : A rare example of a one‐component dual actuator is provided, which displays irreversible change in shape by rolling on contact with water and reversible size change on changing the temperature. The actuator has a bilayer structure with aligned and randomly oriented fibers of poly( N ‐isopropyl acrylamide). A combination of anisotropic E modulus and temperature dependent swelling/shrinkage provides the dual actuation.