Hydrogel-actuated integrated responsive systems (HAIRS): Moving towards adaptive materials

Philseok Kim, Lauren D. Zarzar, Ximin He, Alison Grinthal, Joanna Aizenberg

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

The move toward sustainability and efficiency in nearly every field calls for dynamic materials that can harvest energy from and adapt to a changing environment. Here we review our recently developed, widely applicable strategy for adaptive surface design that integrates two rarely associated categories of materials-nanostructured surfaces and hydrogels-into a hybrid architecture. The nanostructure arrays provide unique topographic patterns that confer wetting, optical, and many other functions but on their own are generally static; by embedding them in a layer of responsive hydrogel, we channel the mechanical forces generated within the swelling/contracting gel to reversibly reconfigure the nanostructures in response to stimuli. Since the sensing and responding components are structurally distinct, they can each be programmed independently to match potentially almost any type of environmental change with almost any type of output. Several of our recent advances in nanofabrication make it possible to choose from an entire spectrum of nanostructured materials, stiffnesses, shapes, symmetries, orientations, and large-scale surface gradients, enabling a given stimulus to be translated into a vast assortment of complex multiscale patterns and adaptive responses. The gel chemistry and nanostructure flexibility can be further optimized for incorporating the surfaces into a variety of structures and environments. We envision using this platform to create a generation of sustainable, self-adapting, and self-reporting materials.

Original languageEnglish (US)
Pages (from-to)236-245
Number of pages10
JournalCurrent Opinion in Solid State and Materials Science
Volume15
Issue number6
DOIs
StatePublished - Dec 2011
Externally publishedYes

Fingerprint

Hydrogel
Hydrogels
Nanostructures
Nanostructured materials
Gels
Nanotechnology
Swelling
Wetting
Sustainable development
Stiffness

Keywords

  • Adaptive and dynamic architectures
  • Biomimetics
  • Environmentally responsive systems
  • High-aspect-ratio nanostructures
  • Hydrogel
  • Nanofabrication
  • Reconfigurable surfaces
  • Sensors and actuators
  • Smart and intelligent materials
  • Sustainable systems

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Hydrogel-actuated integrated responsive systems (HAIRS) : Moving towards adaptive materials. / Kim, Philseok; Zarzar, Lauren D.; He, Ximin; Grinthal, Alison; Aizenberg, Joanna.

In: Current Opinion in Solid State and Materials Science, Vol. 15, No. 6, 12.2011, p. 236-245.

Research output: Contribution to journalArticle

Kim, Philseok ; Zarzar, Lauren D. ; He, Ximin ; Grinthal, Alison ; Aizenberg, Joanna. / Hydrogel-actuated integrated responsive systems (HAIRS) : Moving towards adaptive materials. In: Current Opinion in Solid State and Materials Science. 2011 ; Vol. 15, No. 6. pp. 236-245.
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