Navigation Links
Carbon nanotube muscles generate giant twist for novel motors
Date:10/13/2011

New artificial muscles that twist like the trunk of an elephant, but provide a thousand times higher rotation per length, were announced on Oct. 13 for a publication in Science magazine by a team of researchers from The University of Texas at Dallas, The University of Wollongong in Australia, The University of British Columbia in Canada, and Hanyang University in Korea.

These muscles, based on carbon nanotubes yarns, accelerate a 2000 times heavier paddle up to 590 revolutions per minute in 1.2 seconds, and then reverse this rotation when the applied voltage is changed. The demonstrated rotation of 250 per millimeter of muscle length is over a thousand times that of previous artificial muscles, which are based on ferroelectrics, shape memory alloys, or conducting organic polymers. The output power per yarn weight is comparable to that for large electric motors, and the weight-normalized performance of these conventional electric motors severely degrades when they are downsized to millimeter scale.

These muscles exploit strong, tough, highly flexible yarns of carbon nanotubes, which consist of nanoscale cylinders of carbon that are ten thousand times smaller in diameter than a human hair. Important for success, these nanotubes are spun into helical yarns, which means that they have left and right handed versions (like our hands), depending upon the direction of rotation during twisting the nanotubes to make yarn. Rotation is torsional, meaning that twist occurs in one direction until a limiting rotation results, and then rotation can be reversed by changing the applied voltage. Left and right hand yarns rotate in opposite directions when electrically charged, but in both cases the effect of charging is to partially untwist the yarn.

Unlike conventional motors, whose complexity makes them difficult to miniaturize, the torsional carbon nanotube muscles are simple to inexpensively construct in either very long or millimeter lengths.
'/>"/>

Contact: Katherine Morales
kmorales@utdallas.edu
972-883-4321
University of Texas at Dallas
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Boston College Researchers discover 2 early stages of carbon nanotube growth
2. Researchers use carbon nanotubes to make solar cells affordable, flexible
3. Edible carbon dioxide sponge
4. New hybrid carbon material discovered
5. HDS International Comments on Front-end Carbon Sequestration Technologies
6. NIST uncovers reliability issues for carbon nanotubes in future electronics
7. Carbon nanotube structures changed by attack from within, researchers discover
8. Researchers clarify properties of confined water within single-walled carbon nanotube pores
9. New materials based on carbon nanoparticles
10. Blocking carbon dioxide fixation in bacteria increases biofuel production
11. Ultra fast photodetectors out of carbon nanotubes
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Carbon nanotube muscles generate giant twist for novel motors
(Date:8/28/2014)... converters are important devices in spintronics, an electronic ... of electrons but also on their spin and ... of electric into magnetic signals and vice versa. ... from the Institute of Physics at Johannes Gutenberg ... UK, Prague, and Japan, has for the first ...
(Date:8/28/2014)... Aug. 28, 2014  Next month, executives from clinical trial ... industry events beginning with Patient-Centered Clinical Trials 2014 , ... Boston , September 4-5. Patient recruitment experts ... Aaron Fleishman will share insights on the benefits of ... of tactics – from media to mobile apps – can ...
(Date:8/28/2014)... 28, 2014  Armetheon, Inc. ( www.armetheon.com ), ... to late-stage cardiovascular drug candidates, today announced that ... round of financing. The Series A round was ... with participation from investors that included Atheneos Capital ... Larry Hsu , the founder of Impax ...
(Date:8/28/2014)... 28, 2014 A new market ... world is available from Strategic Consulting, Inc., the ... Industrial Microbiology Market Review, Fourth Edition: Global Review ... (IMMR—4) tracks and compares microbiology test volumes, market ... Europe and Asia, and forecasts future volumes and ...
Breaking Biology Technology:A new, tunable device for spintronics 2A new, tunable device for spintronics 3BBK Worldwide Leads Sessions at Key September Events 2Armetheon Completes $7.0 Million Series A Financing 2Armetheon Completes $7.0 Million Series A Financing 32 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 3
... and the University of California, Los Angeles (UCLA) have concluded ... chemistry for the rapid and robust labeling of proteins, peptides ... Emission Tomography (PET). "We are pleased ... cutting-edge work being developed by the Crump Institute," said Dr. ...
... Geim, a recipient of the 2010 Nobel Prize for graphene, ... electrons can magnetise graphene. The results, reported in ... the field of spintronics. Spintronics is a group of ... in addition to its fundamental electric charge that is exploited ...
... April 15, 2011 Carmell Therapeutics, a company that ... of injured tissues, has closed on a Series A ... facility and collect data for early clinical validation for ... was led by Harbor Light Capital Partners, a private ...
Cached Biology Technology:ImaginAb, Inc. Concludes Licensing Agreement With UCLA for Novel Radiochemistry Technology 2New spin on graphene 2Carmell Therapeutics Completes Series A Financing to Advance the Development of Novel Bioactive Plastics 2Carmell Therapeutics Completes Series A Financing to Advance the Development of Novel Bioactive Plastics 3
(Date:8/31/2014)... A fast-sensitive "electronic-nose" for sniffing the highly infectious bacteria ... stomach cramps, has been developed by a team at ... the research team has demonstrated that it is possible ... which would lead to rapid diagnosis of the ... could be possible to identify different strains of the ...
(Date:8/31/2014)... past several decades, malaria diagnosis has changed very little. After ... the blood across a glass slide, stains it with a ... parasite, which causes the disease. This approach gives an accurate ... an important measure of disease severity but is not ... research team from the Singapore-MIT Alliance for Research and Technology ...
(Date:8/29/2014)... from the University of Texas Medical Branch at Galveston has ... antibodies can completely protect monkeys against a lethal dose of ... time when the disease is severe. , Thomas Geisbert, professor ... Nature discussing advances in Ebola treatment research. The filoviruses ... most deadly of pathogens, with fatality rates of up to ...
Breaking Biology News(10 mins):Scientists develop 'electronic nose' for rapid detection of C. diff infection 2A new way to diagnose malaria 2A new way to diagnose malaria 3Leading Ebola researcher at UTMB says there's an effective treatment for Ebola 2
... , April 30, 2013 /PRNewswire-iReach/ -- Clinilabs, an early phase ... industry, today announced the arrival of Dr. Admir ... provide expertise in the development of drugs to treat pain, ... clinical trials. Dr. Admir Hadzic ...
... integrates three large sets of genomic data available through ... that might predict survival in patients with the most ... researchers at the Ohio State University Comprehensive Cancer Center ... Solove Research Institute (OSUCCC James) initially analyzed messenger ...
... whales sing complex songs in tropical waters during the ... latitudes at other times of the year. NOAA ... whale movements to acoustic behavior on a feeding ground ... published April 10 in the journal PLOS ONE ...
Cached Biology News:Clinilabs Welcomes Anesthesiologist Dr. Admir Hadzic Who Will Provide CSF/cCSF Capabilities For Clinilabs 2Big data analysis identifies prognostic RNA markers in a common form of breast cancer 2Researchers track singing humpback whales on a Northwest Atlantic feeding ground 2
... is used to perform runs with ... the Experion automated electrophoresis system. The ... simulated gel views and summarizes size, ... Results table. This software is for ...
... Top cover cold rolled steel with stove ... surface polyethylene Front, ... 3 UV lamps Internal ... interlocked with fluorescent light Lighting ...
...
... this set of Antibody Microarray slides ... a total of over 2100 spots,including ... control. Antibodies belonging to many important ... cycle progression, signal transduction and gene ...
Biology Products: