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:2/16/2017)... LOS ANGELES , Feb. 16, 2017 /PRNewswire/ ... CAPR ), a clinical-stage biotechnology company developing first-in-class ... today announced that it has elected to terminate ... to natriuretic peptide receptor agonists, including Cenderitide. ... a strategic move as we prioritize our efforts ...
(Date:2/16/2017)... 2017 UCHealth ( Aurora, Colorado ... pulmonary nodule patient management. In addition to optimizing care ... on the lung, UCHealth looks to improve provider workflow ... Stephanie Brown, RN , Thoracic Nurse ... with an Excel spreadsheet, which was extremely arduous and ...
(Date:2/16/2017)... ... February 16, 2017 , ... AxioMed announced today ... and Harvard trained surgeon, completed the procedure on Monday, Jan. 30 at Andrews ... female physician suffering from degenerative disc disease with radiculomyelopathy, as a result of ...
(Date:2/16/2017)... and NEW YORK , Feb. 16, ... completion of their $7M Series B financing, adding an ... the $3.5M led by Mesa Verde Venture Partners and ... resources will be directed towards further accelerating commercial adoption ... comprehensive genomic profiling test and expanding the Paradigm cancer ...
Breaking Biology Technology:
(Date:2/7/2017)... , Feb. 7, 2017 Zimmer Biomet ... in musculoskeletal healthcare, will present at the LEERINK Partners ... York Palace Hotel on Wednesday, February 15, 2017 at ... webcast of the presentation can be accessed at ... following the conference via Zimmer Biomet,s Investor Relations website ...
(Date:2/3/2017)... A new independent identity strategy consultancy firm announces its ... to fill a critical niche in technical and policy ... Mark Crego and Janice Kephart together ... that span federal governments, the 9/11 Commission, private industry, ... has a common theme born from a shared passion ...
(Date:2/1/2017)... February 1, 2017 IDTechEx Research, a leading ... technology, announces the availability of a new report, Sensors for ... Continue Reading ... ... collaborative robots. Source: IDTechEx Report "Sensors for Robotics: Technologies, Markets and ...
Breaking Biology News(10 mins):