English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  Hole-Programmed Superfast Multistep Folding of Hydrogel Bilayers

Stoychev, G., Guiducci, L., Turcaud, S., Dunlop, J. W. C., & Ionov, L. (2016). Hole-Programmed Superfast Multistep Folding of Hydrogel Bilayers. Advanced Functional Materials, 26(42), 7733-7739. doi:10.1002/adfm.201602394.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-527C-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-05DC-5
Genre: Journal Article

Files

show Files
hide Files
:
2344246.pdf (Publisher version), 2MB
 
File Permalink:
-
Name:
2344246.pdf
Description:
-
Visibility:
Restricted (Max Planck Institute of Colloids and Interfaces, MTKG; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Stoychev, Georgi, Author
Guiducci, Lorenzo1, Author              
Turcaud, Sébastien1, Author              
Dunlop, John W. C.1, Author              
Ionov, Leonid, Author
Affiliations:
1John Dunlop, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863291              

Content

show
hide
Free keywords: actuators, folding, hydrogels, polymers, responsive materials
 Abstract: Two important aspects of actuation behavior of stimuli-responsive hydrogels are the complexity of the shape change and its speed. Here, it is shown that varying the shape of simple polymer bilayers can result in very complex and very fast spontaneous folding. The complexity and high folding rate arise from the choice of the shape and from the presence of inhomogeneous swelling within the thermoresponsive layer entrapped between the top hydrophobic layer and the substrate. In contrast to homogeneous swelling of a freestanding bilayer, which leads to a gradual increase of curvature throughout the whole bilayer, inhomogeneous swelling first results in complete rolling of the periphery of the film, which changes its mechanical properties and affects the subsequent morphing process. Further swelling of the thermoresponsive layer generates more stress that builds up until a buckling threshold is overcome, allowing very fast switching from the flat edge-rolled configuration into a folded one. The research demonstrates how the introduction of holes into actuating bilayers gives rise not only to a novel geometric control over the folding fate of the films but also adds the ability to tune the rate of folding, through the careful selection of hole size, location, and shape.

Details

show
hide
Language(s):
 Dates: 2016-09-082016
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1002/adfm.201602394
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Advanced Functional Materials
  Other : Adv. Funct. Mater.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Weinheim : Wiley-VCH Verlag GmbH
Pages: - Volume / Issue: 26 (42) Sequence Number: - Start / End Page: 7733 - 7739 Identifier: ISSN: 1616-301X