Navigation Links
Spinning carbon nanotubes spawns new wireless applications
Date:3/9/2009

The University of Cincinnati has long been known for its world-record-breaking carbon nanotubes. Now researchers at the University of Cincinnati have discovered new uses by spinning carbon nanotubes (CNTs) into longer fibers with additional useful properties.

Breakthroughs Without Broken Threads

Taking technology that has already been proven to grow carbon nanotubes of world-record breaking lengths, researchers Vesselin Shanov and Mark Schulz in the UC College of Engineering NanoWorld Lab have now found new applications by spinning these fibers into strong threads.

David Mast, from UC's McMicken College of Arts and Sciences, saw possibilities in the threads. Mast, an associate professor of physics, took a 25-micron carbon nanotube thread and created a dipole antenna using double-sided transparent tape and silver paste. He was immediately successful in transmitting radio signals.

"It transmitted almost as well as the copper did, but at about one ten-thousandth of the weight," says Mast.

"Then I decided to dismantle my cell phone," says Mast. He created a cell phone antenna, using CNT thread and tape. Ripping the back off his own cell phone, he tore out the phone's original antenna and replaced it with his home-made one. With the "nano-antenna" or "nantenna," he was able to get four to five "bars" of service, compared to none when he removed it.

"That was a very pleasant surprise, how easy it was to do," Mast says. "The hardest thing is to manipulate them. They float on ambient air."

From there it was an easy leap to video, in which he was again successful. "I want to now set up a wireless webcam for the lab using these thread antennas so

Mast says that the key to the new applications is the quality of the material that Schulz and Shanov came up with using multi-wall carbon nanotubes.

"They spin thread that is of such high quality, it opens the door to incredible possibilities," says Mast. "This is just one of many potential applications."

Schulz explains that the carbon nanotube threads work well as an antenna because of something called the "skin effect."

"The electrons transfer well because they want to go to the surface," he says. "Instead of traveling through a bulk mass, they are traveling across a skin."

"Copper wire is a bulk material," Shanov points out. "With carbon nanotubes, all the atoms are on the surface of these carbon structures and the tubes themselves are hollow, so the CNT thread is small and light."

"Carbon thread that is a fraction of the weight of current copper conductors and antennas could directly apply and would be significant to aerospace activities commercial, military and space," he adds. "On any aircraft, there are about several hundred pounds of copper as cables and wiring."

Mast points out that the threads have what he calls an "immensely high tensile strength perhaps five times that of steel and yet they are less dense than steel."

Now that the team has shown the feasibility of such applications, the next steps will be to work on improvements (such as making yarn out of several threads) and to find industries that will commercialize CNT thread.

Mast's next step was going to be to buy a new cell phone. However, he says, "it works so well now that I decided to just upgrade to a new antenna made of carbon nanotube yarn."


'/>"/>

Contact: Wendy Beckman
wendy.beckman@uc.edu
513-556-1826
University of Cincinnati
Source:Eurekalert  

Related biology technology :

1. Electrospinning: Emerging New Technology at Zeus
2. Sheet of carbon atoms acts like a billiard table, physicists find
3. Sheet of carbon atoms acts like a billiard table, physicists find
4. Researchers measure carbon nanotube interaction
5. The sensitive side of carbon nanotubes: Creating powerful pressure sensors
6. NASA Goddard Space Flight Centers carbon nanotube manufacturing technology wins Nano 50 Award
7. Understanding of actuator properties of carbon nanotubes bring micro machines closer
8. Improved wettability of carbon nanotubes opens the door to new possibilities
9. Growing tiny carbon nanotube wires to connect computer chips of the future
10. Carbon nanotubes to be replaced by MoSIx nanowires in high-tech devices says new study
11. FED-TVs with carbon nanotube technology could supersede plasma and LCD flat screens
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Spinning carbon nanotubes spawns new wireless applications
(Date:2/8/2016)... , Feb. 8, 2016  CytRx Corporation ... development company specializing in oncology, today announced that ... security agreement with Hercules Technology Growth Capital, Inc. ... $40 million in financing. --> ... first $25 million of financing under the loan ...
(Date:2/8/2016)... Maryland (PRWEB) , ... February 08, 2016 , ... Information ... BSI Web product. The upgrade represents a completely new technical foundation and is ... will offer a responsive design interface, significantly increased speed for search results, a streamlined ...
(Date:2/8/2016)... that its new website has gone live. On Thursday, Feb. 4, the company unveiled a re-envisioned ... Visit the new site: www.diplomat.is ... ... Diplomat Specialty Pharmacy ... "The goal was to reimagine the website and create a smarter, more comprehensive digital platform," said ...
(Date:2/5/2016)... Feb. 5, 2016  In the pharmaceutical industry the ... host of launch activities including the identification and engagement ... activity is especially high in the oncology therapeutic area ... Practices and the Role of Medical Affairs in Oncology ... on oncology therapies find better ways to utilize medical ...
Breaking Biology Technology:
(Date:2/3/2016)... --> --> Fourth quarter 2015:   ... compared with fourth quarter of 2014. Gross margin was 46% ... Earnings per share increased to SEK 6.39 (loss: 0.49). ... , --> --> January ... (233.6), up 1,142% compared with 2014. Gross margin was 43% ...
(Date:2/2/2016)... , Feb. 2, 2016 This BCC ... bioinformatic market by reviewing the recent advances in ... that drive the field forward. Includes forecast through ... Identify the challenges and opportunities that exist in ... software solution developers, as well as IT and ...
(Date:2/1/2016)... -- Rising sales of consumer electronics coupled ... gesture control market size through ... electronics coupled with new technological advancements to drive global ... through 2020   --> Rising ... to drive global touchfree intuitive gesture control market ...
Breaking Biology News(10 mins):