Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

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

Carbon Sciences Developing Breakthrough Technology to Mass-Produce Graphene -- the New Miracle Material: Company Enters Into an Agreement With the University of California, Santa Barbara (UCSB) to Fund the Further Development of a New Graphene Process September 16th, 2014

Nanoribbon film keeps glass ice-free: Rice University lab refines deicing film that allows radio frequencies to pass September 16th, 2014

New pricing report for bulk graphene materials September 13th, 2014

Molecular self-assembly controls graphene-edge configuration September 10th, 2014

MEMS

Carbyne morphs when stretched: Rice University calculations show carbon-atom chain would go metal to semiconductor July 21st, 2014

Leti to Present Technological Platforms Targeting Industry’s Needs for the Future at Semicon West Workshop: Presentation at STS Session to Focus on Leti Advanced Lithography Programs for 1x Nodes and on Silicon Photonics at TechXPot June 25th, 2014

Mirrorcle Technologies Opens New Company Headquarters May 27th, 2014

Ziptronix and EV Group Demonstrate Submicron Accuracies for Wafer-to-Wafer Hybrid Bonding: Enables Fine-Pitch Connections for 3D Applications, Including Image Sensors, Memory and 3D SoCs May 27th, 2014

Discoveries

Nanoribbon film keeps glass ice-free: Rice University lab refines deicing film that allows radio frequencies to pass September 16th, 2014

‘Small’ transformation yields big changes September 16th, 2014

Rice rolls 'neat' nanotube fibers: Rice University researchers' acid-free approach leads to strong conductive carbon threads September 15th, 2014

Simple, Cost-Effective Method Proposed for Synthesizing Zinc Oxide Nanopigments September 15th, 2014

Announcements

Carbon Sciences Developing Breakthrough Technology to Mass-Produce Graphene -- the New Miracle Material: Company Enters Into an Agreement With the University of California, Santa Barbara (UCSB) to Fund the Further Development of a New Graphene Process September 16th, 2014

Nanoribbon film keeps glass ice-free: Rice University lab refines deicing film that allows radio frequencies to pass September 16th, 2014

Effective Nanotechnology Innovations to Receive Mustafa Prize September 16th, 2014

‘Small’ transformation yields big changes September 16th, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE