Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Iranian Researchers Gain New Insight into Thermal Properties of Nanotubes

Abstract:
The results of a joint scientific work by the Iranian researchers at the University of Tehran and Research Institute of Petroleum Industry (RIPI) revealed new insights into the thermal properties of carbon nanotubes.

Iranian Researchers Gain New Insight into Thermal Properties of Nanotubes

Tehran, Iran | Posted on April 21st, 2012

The findings can have a significant impact on the performance of heat exchangers, drilling muds and cements.

The research group initially prepared five different structures of carbon nanotubes with varying number of walls through the CVD method and subsequently functionalized them by alkali salts to yield super stable nanofluids of each type. As a final part of their analysis, the researchers measured the thermal conductance of the synthesized nanofluids as a function of temperature and time. In addition, the researchers appraised the stability of the mentioned nanofluids through three different methods for the sake of completeness.

As a corollary derived from the research, increasing the layers of nanotubes is in favor of the apparent thermal conductivity. This is attributed to an increased effective contact surface due to existence of more layers and the influence of the layer thicknesses.

"The adopted method to functionalize the nanotubes had been originally intended for treatment of single wall carbon nanotubes, however, we managed to use it for other CNT structures after some refinements. Consequently, prolonged stability duration (more than six months) as well as less destructive effects caused by the utilization of acids were achieved. In fact, we took advantage of potassium persulfate as the oxidizing agent to bypass the need for acids or inorganic solvents. In summary, our approach features economy, compatibility with the environment, ease of practicality and operation," Ayda Nasiri, a member of the research group, explained.


####

For more information, please click here

Copyright © Fars News Agency

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

News and information

Two-dimensional melting of hard spheres experimentally unravelled after 60 years: First definitive experimental evidence of two-dimensional melting of hard spheres April 21st, 2017

National Conference on Nanomaterials, (NCN-2017) April 21st, 2017

NanoMONITOR shares its latest developments concerning the NanoMONITOR Software and the Monitoring stations April 21st, 2017

Nanomechanics, Inc. Unveils New Product at ICMCTF Show April 25th: Nanoindentation experts will launch the new Gemini that measures the interaction of two objects that are sliding across each other – not merely making contact April 21st, 2017

Nanotubes/Buckyballs/Fullerenes

Nanotubes that build themselves April 14th, 2017

Intertronics introduce new nanoparticle deagglomeration technology March 15th, 2017

Boron atoms stretch out, gain new powers: Rice University simulations demonstrate 1-D material's stiffness, electrical versatility January 26th, 2017

New stem cell technique shows promise for bone repair January 25th, 2017

Materials/Metamaterials

Two-dimensional melting of hard spheres experimentally unravelled after 60 years: First definitive experimental evidence of two-dimensional melting of hard spheres April 21st, 2017

National Conference on Nanomaterials, (NCN-2017) April 21st, 2017

Forge Nano 2017: 1st Quarter Media Update April 20th, 2017

Making Batteries From Waste Glass Bottles: UCR researchers are turning glass bottles into high performance lithium-ion batteries for electric vehicles and personal electronics April 19th, 2017

Announcements

Two-dimensional melting of hard spheres experimentally unravelled after 60 years: First definitive experimental evidence of two-dimensional melting of hard spheres April 21st, 2017

National Conference on Nanomaterials, (NCN-2017) April 21st, 2017

NanoMONITOR shares its latest developments concerning the NanoMONITOR Software and the Monitoring stations April 21st, 2017

Nanomechanics, Inc. Unveils New Product at ICMCTF Show April 25th: Nanoindentation experts will launch the new Gemini that measures the interaction of two objects that are sliding across each other – not merely making contact April 21st, 2017

Research partnerships

Better living through pressure: Functional nanomaterials made easy April 19th, 2017

Shedding light on the absorption of light by titanium dioxide April 14th, 2017

AIM Photonics Presents Cutting-Edge Integrated Photonics Technology Developments to Packed House at OFC 2017, the Optical Networking and Communication Conference & Exhibition April 11th, 2017

Nanoparticles open new window for biological imaging: “Quantum dots” that emit infrared light enable highly detailed images of internal body structures April 10th, 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