Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Adding nanotubes makes ordinary materials absorb vibration

Abstract:
New composites could remove buzz from speakers, sting from golf clubs

Adding nanotubes makes ordinary materials absorb vibration

Troy, NY | Posted on February 08, 2006

A new study suggests that integrating nanotubes into traditional materials dramatically improves their ability to reduce vibration, especially at high temperatures. The findings could pave the way for a new class of materials with a multitude of applications, from high-performance parts for spacecraft and automobile engines, to golf clubs that don’t sting and stereo speakers that don’t buzz.

The materials, developed by researchers at Rensselaer Polytechnic Institute, are described in the Feb. 8 issue of the journal Nano Letters.

Rensselaer nanotube material
From left to right, an untreated sample of polymer material, the new nano-composite, and a scanning electron microscopy image showing the nanotubes dispersed in the polymer resin. Credit and Copyright © Rensselaer/Koratkar

Click on image for larger version.

Nanocomposites don’t suffer from the same weight and volume penalties as current polymeric damping materials, but the new findings point to another important advantage, according to Nikhil Koratkar, associate professor of mechanical, aerospace, and nuclear engineering at Rensselaer and lead author of the paper. “Traditional damping polymers perform poorly at elevated temperatures,” he says. “Our new materials provide excellent damping at high temperatures, suggesting that these nanocomposites show great potential for a variety of applications in aircraft, spacecraft, satellites, automobiles, and even sensors for missile systems — basically any structure that is exposed to vibration.”

Though much of the research focus has been on improving the strength and stiffness of nanomaterials, Koratkar and his coworkers have directed their attention to another important property: damping, or the ability of a material to dissipate energy. They have found that dispersing nanotubes throughout traditional materials creates new composites with vastly improved damping capabilities. And they have also shown for the first time that these damping properties are enhanced as the temperature increases.

Carbon nanotubes are made from graphite-like carbon, where the atoms are arranged like a rolled-up tube of chicken wire. They have enticed researchers since their discovery in 1991, offering an impressive combination of high strength and low weight, but few commercial applications have resulted in the intervening years, according to Koratkar.

The new materials could be extremely useful for any kind of space application, because temperatures swing wildly from very hot in the day to very cold at night, Koratkar notes. And he expects to use them in the diaphragms of loud speakers to help improve sound quality by reducing the buzz associated with high bass levels.

The sporting goods market is also an especially promising outlet, particularly for golf clubs and tennis racquets. “Manufacturers want tennis racquets and golf club shafts to be light and stiff, but without the annoying sting that comes from a bad shot,” Koratkar says.

Pulickel Ajayan, the Henry Burlage Professor of Materials Science and Engineering at Rensselaer and a world-renowned expert in fabricating nanotube materials, collaborated with Koratkar on this project, and two other Rensselaer researchers were involved with the research: Jonghwan Suhr, a post-doctoral researcher in mechanical, aerospace, and nuclear engineering; and Wei Zhang, a graduate student in aeronautical engineering.

In 2004, Koratkar received a National Science Foundation Faculty Early Career Development Award to fund the development of these new materials. Additional funding for this project was provided by the U.S. Army Research Office.

####

Nanotechnology at Rensselaer:
In September 2001, the National Science Foundation selected Rensselaer as one of the six original sites for a new Nanoscale Science and Engineering Center (NSEC). As part of the U.S. National Nanotechnology Initiative, the program is housed within the Rensselaer Nanotechnology Center and forms a partnership between Rensselaer, the University of Illinois at Urbana-Champaign, and Los Alamos National Laboratory. The mission of Rensselaer’s Center for Directed Assembly of Nanostructures is to integrate research, education, and technology dissemination, and to serve as a national resource for fundamental knowledge in directed assembly of nanostructures. The five other original NSECs are located at Harvard University, Columbia University, Cornell University, Northwestern University, and Rice University.

About Rensselaer:
Rensselaer Polytechnic Institute, founded in 1824, is the nation’s oldest technological university. The university offers bachelor’s, master’s, and doctoral degrees in engineering, the sciences, information technology, architecture, management, and the humanities and social sciences. Institute programs serve undergraduates, graduate students, and working professionals around the world. Rensselaer faculty are known for pre-eminence in research conducted in a wide range of fields, with particular emphasis in biotechnology, nanotechnology, information technology, and the media arts and technology. The Institute is well known for its success in the transfer of technology from the laboratory to the marketplace so that new discoveries and inventions benefit human life, protect the environment, and strengthen economic development.

For more information, please click here.

Contact:
Jason Gorss
Office of Communications
Rensselaer Polytechnic Institute
phone: 518-276-6098
fax: 518-276-6091
gorssj@rpi.edu
news.rpi.edu/

Copyright © Rensselaer Polytechnic Institute

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 News Press

Products

Toronto-based Environmental Technology Pioneer Green Earth Nano Science Expands in EU February 6th, 2015

DELSEY by Philippe Starck DELSEY Launches New Collection by Philippe Starck February 4th, 2015

NEI introduces NANOMYTE® SuperAi, a Durable Anti-ice Coating December 4th, 2014

Biosenta Inc. Updates New Household Disinfectant Testing Results; It Kills 100% of a Broad Range of Deadly Molds, Fungi, Bacteria, and Viruses, Including Ebola and Enterovirus D68 November 20th, 2014

Possible Futures

Nanotechnology in Medical Devices Market is expected to reach $8.5 Billion by 2019 March 25th, 2015

Nanotechnology Enabled Drug Delivery to Influence Future Diagnosis and Treatments of Diseases March 21st, 2015

Nanocomposites Market Growth, Industry Outlook To 2020 by Grand View Research, Inc. March 21st, 2015

Nanotechnology Drug Delivery Market in the US 2012-2016 : Latest Report Available by Radiant Insights, Inc March 16th, 2015

Nanotubes/Buckyballs

From tobacco to cyberwood March 31st, 2015

Wrapping carbon nanotubes in polymers enhances their performance: Scientists at Japan's Kyushu University say polymer-wrapped carbon nanotubes hold much promise in biotechnology and energy applications March 30th, 2015

Carbon nanotube fibers make superior links to brain: Rice University invention provides two-way communication with neurons March 25th, 2015

Iranian Scientists Eliminate Expensive Materials from Diabetes Diagnosis Sensors March 25th, 2015

Materials/Metamaterials

Wrapping carbon nanotubes in polymers enhances their performance: Scientists at Japan's Kyushu University say polymer-wrapped carbon nanotubes hold much promise in biotechnology and energy applications March 30th, 2015

DFG to Establish One Clinical Research Unit and Five Research Units: New Projects to Investigate Complications in Pregnancy, Particle Physics, Nanoparticles, Implants and Transport Planning / Approximately 13 Million Euros in Funding for an Initial Three-Year Period March 28th, 2015

Chemists make new silicon-based nanomaterials March 27th, 2015

UT Dallas engineers twist nanofibers to create structures tougher than bulletproof vests March 27th, 2015

Announcements

So, near and yet so far: Stable HGNs for Raman April 1st, 2015

Two-dimensional dirac materials: Structure, properties, and rarity April 1st, 2015

3-D neural structure guided with biocompatible nanofiber scaffolds and hydrogels April 1st, 2015

Light-powered gyroscope is world's smallest: Promises a powerful spin on navigation April 1st, 2015

Sports

Researchers use nanotechnology to engineer ACL replacements: Researchers created a tri-component, synthetic graft for reconstructing torn anterior cruciate ligaments December 30th, 2014

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

CEA-Leti and CORIMA Team up on Force Sensors Integrated in Cycle Wheels to Measure Rider Power Output June 26th, 2014

‘Four!' Heads Up, Wide Use of More Flexible Metallic Glass Coming Your Way: Advances in Glass Alloys Lead to Strength, Flexibility March 4th, 2014

Aerospace/Space

Iranian Researchers Present Model to Determine Dynamic Behavior of Nanostructures March 24th, 2015

Engineers create chameleon-like artificial 'skin' that shifts color on demand March 12th, 2015

Anousheh Ansari Wins the National Space Society's Space Pioneer Award for "Service to the Space Community" March 5th, 2015

Launch of the Alliance for Space Development March 1st, 2015

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 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE