Navigation Links
Novel Light Weight Polymers Made Up of Carbon Nanotubes

University of Virginia engineering professor Mool C. Gupta and his team have used carbon nanotubes to unite the virtues of plastics and metals in a new ultra-lightweight , conductive material that may revolutionize electromagnetic shielding and more.

The team's innovation will be honored with a Nano50 award from Nanotech Briefs magazine, which recognizes the top 50 technologies, products and innovators that have significantly impacted nanotechnology.

Sensitive electronic devices like cell phones and computers require shielding from electromagnetic interference (EMI). Such shielding which must be electrically conductive has traditionally been made of metal, which poses a weight problem in the push to miniaturize and lighten electronics.

In response, Gupta led a team that has developed an ultra-lightweight nanocomposite that outperforms conventional shielding.

This new nanocomposite material is a mixture of plastic, carbon nanotubes and a foaming agent, making it extremely lightweight, corrosion-proof and cheaper to produce than metal. The carbon nanotubes play a key role in creating these unique properties, explained Gupta. Most notably, experiments revealed that only 1 percent to 2 percent of the materials composition needed to be comprised of nanotubes to increase the electrical conductivity by 10 orders of magnitude.

The addition of carbon nanotubes also increased the materials thermal conductivity, improving its capacity to dissipate heat.

Metal is not only heavy; it corrodes easily, Gupta said. And plastic insulators are lightweight, stable and cheaper to produce, but cannot conduct electricity. So the goal, originally, was to take plastic and make it electrically conductive.

After experimenting with adding metal powder to plastics without impacting the weight of the material significantly, Gupta turned to carbon nanotubes. With their ultra-small diameter, hig h aspect ratio, high mechanical strength, good electrical and thermal conductivity and light weight, Gupta and his team found that carbon nanotubes had all of the properties necessary to accomplish the objective.

The long length and small diameter of carbon nanotubes forms an interconnectivity within the plastic that makes it electrically conductive, said Gupta, the Langley Professor of Electrical and Computer Engineering at U.Va.

The structures work well for electromagnetic interference shielding. Once we reached this milestone, we began investigating ways to reduce the weight even further.

Guptas team then added a foaming agent a chemical that creates air pockets to the material. The results astounded even the researchers; this extra step reduced the weight of the material by 50 percent and increased its flexibility.

Gupta's team included U.Va. postdoctoral fellow Dr. Y. Yang, and colleagues at the National Institute of Aerospace and the National Aeronautics and Space Administration. They will receive the Nano50 award in November 2007 at the NASA Tech Briefs National Nano Engineering Conference in Boston.


'"/>




Related medicine news :

1. Novel "CYCLOSPORINE CAPSULE FORMULATION" to be launched
2. Novel biopsy technique for prostate cancer
3. Novel computer model for breast cancer
4. Novel research on liver cancer
5. Novel way to fight cancer
6. Novel test for bowel cancer
7. Novel Anti-Neutrophilic Effect produced by Salmeterol in mild asthma patients
8. Novel Therapy for Chronic Problem
9. Blood Sugar Kept In Control By Novel Protein
10. Novel antibiotic dressing developed for improved wound healing
11. United Kingdom Is Lagging In Novelty In The Field Of Pharmaceuticals
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/5/2016)... , ... February 05, 2016 , ... ... the addition of micro-needling services in their Napa Valley office. The technique utilizes ... Plastic Surgery Associates, Dr. Canales and Dr. Furnas, are part of only a ...
(Date:2/5/2016)... ... ... After years as an active staff surgeon and having served as the ... Carman transitioned to chief of the Division of Plastic Surgery at what is now ... and began a second three-year term in January of 2016. , The original selection ...
(Date:2/5/2016)... ... February 05, 2016 , ... In the fourth quarter of ... at the La Valencia Hotel in San Diego, California to discuss changes in ... year’s most outstanding franchise, walking away with the coveted David Wright Award of ...
(Date:2/5/2016)... ... February 05, 2016 , ... Give To Cure ... to search for and donate to Give To Cure’s campaign that is crowdfunding clinical ... lets users make and share payments through a smart device. In 2015 alone, Venmo ...
(Date:2/5/2016)... New York, New York (PRWEB) , ... February 05, 2016 , ... ... (APDA) announced the election of Patrick McDermott as Chairman of the National Board of ... welcome Pat as Chairman of the Board,” stated Leslie A. Chambers , APDA ...
Breaking Medicine News(10 mins):
(Date:2/4/2016)... DUBLIN, Ohio , Feb. 4, 2016 ... Pricing Program, or those already participating in the program, ... Guidance, often referred to as the , Mega-Guidance , ... the final guidance is published in September 2016. ... 340B Product and Service Marketing , summarizes the Mega-Guidance,s ...
(Date:2/4/2016)... Feb. 4, 2016 Worldwide Radiology Oncology ... growth as next generation systems provide a way ... for cancer surgery. New systems pinpoint the delivery ... has been such a problem previously, limiting the ... robots take cancer surgery far beyond what has ...
(Date:2/4/2016)... 2016 Wegener Polyangiitis - Pipeline Review, ... ,Wegener Polyangiitis - Pipeline Review, H2 2015, provides ... This report provides comprehensive information on the ... analysis at various stages, therapeutics assessment by drug ... (RoA) and molecule type, along with latest updates, ...
Breaking Medicine Technology: