News / Science & Technology

Scientists Create Powerful Artificial Muscles

Scanning electron microscope image of metal-coated nylon fibers used in design of the new artificial muscle.
Scanning electron microscope image of metal-coated nylon fibers used in design of the new artificial muscle.
Jessica Berman
By tightly coiling high-strength polymer fishing line and basic sewing thread, an international team of researchers have created artificial muscles of superhuman strength that can be made on the cheap.

“In terms of comparison, if you had a muscle made from our material that was the same length and weight as a natural muscle, in general it could lift about a hundred times more force than a natural muscle can,” said Carter Haines, a PhD student at the University of Texas Nanotech Institute in Dallas, which led the international research team.

For heavy lifting, researchers say a single artificial muscle of bundled, twisted fishing line can lift 7.25 kilograms. Writing in the journal Science, Haines, the report's lead author, says the synthetic muscles could be used to power human-like robots, prosthetic limbs and exoskeletons for people whose muscles have atrophied.  

“One of the simpler things to do, as opposed to, let's say, replace a missing limb, is to see [if we can] create something like a glove that would fit over" a hand or limb that has lost function, he said.

According to the report, the scientists say twisted sewing thread of a diameter less than human hair works just as well and could be used for applications requiring less force. For example, a synthetic muscle used to power mechanical robots that perform minimally invasive microsurgery, Haines says.

When heated, the muscles twist along their length, contracting to produce the force, and, when cooled, the muscles relax. They can be powered by temperature changes or a simple battery.

When threaded through fabric, Haines says the invention could open pores in clothing when it is hot to let in cool air and tighten fabric when it is cold.

The muscles are easy to make, says Haines, because they require materials that can be purchased at any store. Students learning about the technology are making the synthetic muscles for school science projects.

You May Like

Philippines, Muslim Rebels Try to Salvage Peace Pact

Peace process faces major setback after botched military operation to find terrorists results in bloody gunbattle between government forces, Moro Islamic Liberation Front fighters More

Republicans Expect Long, Expensive Presidential Battle

Political strategist says eventual winner will be one who can put together strongest coalition of various conservative groups that make up Republican Party More

Video New Wheelchair Is Easier to Use, Increases Mobility

Engineers have come up with a lever-operated design that makes use of easily accessible bicycle technology More

This forum has been closed.
Comment Sorting
Comments
     
by: Shinoda Marikoh from: Shinagawa, TKO
February 22, 2014 8:20 PM
That is a good question.
Durability is very important issue to use them for machines and human bodies. But even if there are some problems, engneers will solve the problems in the near future, and create humanoid robots for dangerous works and millitary actions.

by: John
February 21, 2014 9:56 PM
The one question I'd ask is 'How long do they last?'
In Response

by: Mervyn from: Yes
February 22, 2014 10:06 AM
Christian Science Monitor reports that they last for millions of cycles.

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Liberia's Almost Last Ebola Patient Grateful but Still Grievingi
X
Benno Muchler
March 26, 2015 3:41 PM
Beatrice Yardolo was to make history as Liberia’s last Ebola patient. Liberians recently started counting down 42 days, the period that has to go by without a single new infection until the World Health Organization can declare a country Ebola-free. That countdown stopped on March 20 when there was another new case of Ebola, making Yardolo’s story a reminder that Ebola is far from over. Benno Muchler reports from Monrovia.
Video

Video Liberia's Almost Last Ebola Patient Grateful but Still Grieving

Beatrice Yardolo was to make history as Liberia’s last Ebola patient. Liberians recently started counting down 42 days, the period that has to go by without a single new infection until the World Health Organization can declare a country Ebola-free. That countdown stopped on March 20 when there was another new case of Ebola, making Yardolo’s story a reminder that Ebola is far from over. Benno Muchler reports from Monrovia.
Video

Video Cambodian Land Grabs Threaten Traditional Communities

Indigenous communities in Cambodia's Ratanakiri province say the government’s economic land concession policy is taking away their land and traditional way of life, making many fear that their identity will soon be lost. Local authorities, though, have denied this is the case. VOA's Say Mony went to investigate and filed this report, narrated by Colin Lovett.
Video

Video US, South Korea Conduct Joint Military Exercises

The Eighth U.S. Army Division and the Eighth Republic of Korea Mechanized Infantry Division put on a well orchestrated show of force for the media this week during their joint military training exercises in South Korea. VOA’s Seoul correspondent Brian Padden was there and reports the soldiers were well disciplined both in conducting a complex live fire exercise and in staying on message with the press.
Video

Video Space Program Status Disappoints 'Last Man on the Moon'

One of the films that drew big crowds last week at the annual South by Southwest festival in Austin, Texas, tells the story of the last human being to stand on the moon, U.S. astronaut Eugene Cernan. It has been 42 years since Cernan returned from the moon and he laments that no one else has gone there since. VOA’s Greg Flakus reports.
Video

Video Young Filmmakers Shine Spotlight on Giving Back

A group of student filmmakers from across the United States joined President Barack Obama at the White House this month for the second annual White House Student Film Festival. Fifteen short films were officially selected from more than 1,500 entries by students aged 6 through 18. The filmmakers and their families then joined the president and a group of celebrities for a screening of their films. VOA’s Julie Taboh reports.
Video

Video VOA Exclusive: Interview with Afghan President Ashraf Ghani

Afghan President Ashraf Ghani, during his first visit as president to Washington, gave a one-on-one interview with VOA Afghan Service reporter Said Suleiman Ashna, about his request for a change in U.S. troop levels, the threat from the Islamic State, and repairing relations with the United States and Pakistan. The interview was held at Blair House, late Sunday, in Pashto.
Video

Video California Science Center Tells Story of Dead Sea Scrolls

The ancient manuscripts were uncovered in the mid-20th century, and they are still yielding clues about life and religious beliefs in ancient Israel. As VOA's Mike O'Sullivan reports, an exhibit in Los Angeles shows how modern science is bringing the history of these ancient documents to life.
Video

Video Angelina Jolie Takes Another Bold Step

Hollywood actress and filmmaker Angelina Jolie has revealed she had her ovaries and fallopian tubes removed to lower her odds of getting cancer. Doctors say the huge publicity over her decision will help raise awareness about the importance of cancer screening. VOA’s George Putic has more

All About America

Circumventing Censorship

An Internet Primer for Healthy Web Habits

As surveillance and censoring technologies advance, so, too, do new tools for your computer or mobile device that help protect your privacy and break through Internet censorship.
More