Smart Graphene Fibers

  • ChemPubSoc Europe Logo
  • Author: Jonathan Faiz
  • Published Date: 26 September 2013
  • Source / Publisher: Angewandte Chemie International Edition/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Smart Graphene Fibers

Graphene fibers are lightweight, flexible, and strong. As such, they are ideal candidates for incorporation into "smart materials" that change shape in response to stimuli.


Liangti Qu and his team, Beijing Institute of Technology, China, have prepared graphene/graphene oxide (G/GO) nanofibers by scanning a laser beam over freshly spun GO fibers to result in the formation of asymmetric areas of graphene. These G/GO fibers are flexible and have a high tensile strength.

The oxygen-rich nature of graphene oxide means that it has a higher affinity for water than graphene does. Exposure to water vapor, therefore, results in the reversible expansion/contraction of the GO layers, but not the G layers, and thus the fibers reversibly bend in the presence of moist air with a relative humidity of 80 %.


As the laser reduction can be used to make fibers with precisely defined G regions, the researchers successfully designed and produced systems that can reversibly form "hooks" and "S" shapes. They also fabricated a G/GO fiber "walker" that moves through a narrow slit upon "on" and "off" states of applied moisture, and even wove the fibers to produce a responsive textile structure. The team hopes that these fibers can be used in the development of woven devices and smart textiles.


Article Views: 3012

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH