Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 15, 2016
Previous Article Next Article

Stimuli-responsive cylindrical hydrogels mimic intestinal peristalsis to propel a solid object

Author affiliations

Abstract

The emerging field of soft robotics relies on soft, stimuli-responsive materials to enable load transport, manipulation, and mobility in complex unconstrained environments. These materials often need to replicate biological functionality such as muscle contractions and flexibility. Here we demonstrate a soft actuator prototype based on thermosensitive PNIPAAM hydrogels that can transport and manipulate objects. A hollow cylindrical hydrogel was selectively heated and cooled with Peltier devices to yield a traveling wave of shrinking and swelling akin to intestinal peristalsis. A 4 mm diameter bead was placed inside the cylinder and propelled 19.5 mm, equal to distance traveled by the peristaltic wave. We derived conditions that enable peristaltic transport as a function of transporter-cargo design parameters. We conclude that hydrogel-based peristaltic manipulators covering 2 orders of magnitude in stiffness (1–102 kPa) could transport cargo spanning 4 orders of magnitude in size (μm–m).

Graphical abstract: Stimuli-responsive cylindrical hydrogels mimic intestinal peristalsis to propel a solid object

Back to tab navigation

Article information


Submitted
14 Oct 2015
Accepted
11 Feb 2016
First published
11 Feb 2016

Soft Matter, 2016,12, 3582-3588
Article type
Paper
Author version available

Stimuli-responsive cylindrical hydrogels mimic intestinal peristalsis to propel a solid object

V. Nistor, J. Cannell, J. Gregory and L. Yeghiazarian, Soft Matter, 2016, 12, 3582
DOI: 10.1039/C5SM02553B

Social activity

Search articles by author

Spotlight

Advertisements