Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > “Graphene oxide nanoribbon actuators for MEMS and other electrolyte-free motion systems”

Abstract:
Graphene oxide nanoribbons (GOr), obtained by chemically unzipping multi-walled carbon nanotubes, were assembled into macroscopic mats by vacuum filtration. These mats exhibited up to 1.6% reversible contraction when electrically heated at ambient conditions. The experimentally derived work capacity of the mats was about 40 J/kg, which is similar to that of natural muscle. It was limited by the mechanical strength of mats and can be increased upon optimization of their preparation conditions. X-ray diffraction measurements indicated reversible changes in the interplanar spacing of GOr layers during heating. These dimensional changes can be associated with reversible adsorption/desorption of water molecules between GOr layers and used in thermally-driven micro-electromechanical systems (MEMS), micromachines, various opto-mechanic and micro-fluidic devices. Similar to shape memory alloy actuators, GOr mats can be deployed for electrolyte-free artificial muscle applications. The work reported in Chemical Physics Letters, 505 (2011) 31 extends the list of properties available from graphene oxide.

“Graphene oxide nanoribbon actuators for MEMS and other electrolyte-free motion systems”

Dallas, TX | Posted on April 25th, 2011

####

For more information, please click here

Contacts:
Mikhail E Kozlov

Copyright © University of Texas Dallas

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

"Thermal actuation of graphene oxide nanoribbon mats" in Chemical Physics Letters.

Related News Press

Graphene/ Graphite

ICN2 researchers compute unprecedented values for spin lifetime anisotropy in graphene November 17th, 2017

Wrinkles give heat a jolt in pillared graphene : Rice University researchers test 3-D carbon nanostructures' thermal transport abilities November 2nd, 2017

Graphene enables high-speed electronics on flexible materials: A flexible terahertz detector has been developed by Chalmers using graphene transistors on plastic substrates. It is the first of its kind, and may open for applications requiring flexible electronics such as wireless October 31st, 2017

Graphene forged into three-dimensional shapes September 26th, 2017

MEMS

First Capacitive Transducer with 13nm Gap July 27th, 2017

Bosch announces high-performance MEMS acceleration sensors for wearables June 27th, 2017

Smart multi-layered magnetic material acts as an electric switch: New study reveals characteristic of islands of magnetic metals between vacuum gaps, displaying tunnelling electric current March 1st, 2017

Engineers shrink microscope to dime-sized device February 17th, 2017

Discoveries

Quantum optics allows us to abandon expensive lasers in spectroscopy: Lomonosov Moscow State University scientists have invented a new method of spectroscopy November 21st, 2017

Nano-watch has steady hands November 21st, 2017

Nanoparticles could allow for faster, better medicine: Exposure of nanoparticles in the body allows for more effective delivery November 20th, 2017

ICN2 researchers compute unprecedented values for spin lifetime anisotropy in graphene November 17th, 2017

Announcements

Quantum optics allows us to abandon expensive lasers in spectroscopy: Lomonosov Moscow State University scientists have invented a new method of spectroscopy November 21st, 2017

Nano-watch has steady hands November 21st, 2017

Nano Global, Arm Collaborate on Artificial Intelligence Chip to Drive Health Revolution by Capturing and Analyzing Molecular Data in Real Time November 21st, 2017

Nanoparticles could allow for faster, better medicine: Exposure of nanoparticles in the body allows for more effective delivery November 20th, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project