Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

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

Lifeboat Foundation Responds to Largest Ebola Outbreak in History October 2nd, 2014

Iran's Sharif University to Host 4th Conference on Nanostructured Solar Cells October 2nd, 2014

Multifunctional Cotton Fabrics Produced in Iran Using Nanotechnology October 2nd, 2014

Graphene chips are close to significant commercialization October 1st, 2014

Nanotubes/Buckyballs

Nanoparticles Accumulate Quickly in Wetland Sediment: Aquatic food chains might be harmed by molecules "piggybacking" on carbon nanoparticles October 1st, 2014

Elsevier Publishes New Content on Graphene and Materials Science: Books Discuss Properties and Emerging Applications of Carbon Nanotubes, Graphene and Nanomaterials September 25th, 2014

Future flexible electronics based on carbon nanotubes: Study in Applied Physics Letters show how to improve nanotube transistor and circuit performance with fluoropolymers September 23rd, 2014

Nanotubes help healing hearts keep the beat: Rice University, Texas Children’s Hospital patch for defects enhances electrical connections between cells September 23rd, 2014

Materials/Metamaterials

Rice launches Center for Quantum Materials: RCQM will immerse global visitors in cross-disciplinary research September 30th, 2014

How things coil: Researchers discover that simulation technology designed for Hollywood can be used as a predictive tool for understanding fundamental engineering problems September 29th, 2014

Iranian Scientists Determine Grain Size, Minimize Time of Nanocomposite Synthesis September 29th, 2014

Nanoparticles Used to Improve Quality of Bone Cement September 29th, 2014

Announcements

Lifeboat Foundation Responds to Largest Ebola Outbreak in History October 2nd, 2014

Iran's Sharif University to Host 4th Conference on Nanostructured Solar Cells October 2nd, 2014

Multifunctional Cotton Fabrics Produced in Iran Using Nanotechnology October 2nd, 2014

Graphene chips are close to significant commercialization October 1st, 2014

Research partnerships

Novel approach to magnetic measurements atom-by-atom October 1st, 2014

'Stealth' nanoparticles could improve cancer vaccines October 1st, 2014

Stressed Out: Research Sheds New Light on Why Rechargeable Batteries Fail October 1st, 2014

Research mimics brain cells to boost memory power September 30th, 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