A finding by a University of Central Florida researcher that unlocks a means of controlling materials at the nanoscale and opens the door to a new generation of manufacturing is featured online today in the journal Nature.
Using a pair of pliers in each hand and gradually pulling taut a piece of glass fiber coated in plastic, associate professor Ayman Abouraddy found that something unexpected and never before documented occurred – the inner fiber fragmented in an orderly fashion.
“What we expected to see happen is NOT what happened,” he said. “While we thought the core material would snap into two large pieces, instead it broke into many equal-sized pieces.”
He referred to the technique in the Nature article as “Breaking Me Softly.”
The process of pulling fibers to force the realignment of the molecules that hold them together, known as cold drawing, has been the standard for mass production of flexible fibers like plastic and nylon for most of the last century.
Abouraddy and his team have shown that the process may also be applicable to multi-layered materials, a finding that could lead to the manufacturing of a new generation of materials with futuristic attributes.
“Advanced fibers are going to be pursuing the limits of anything a single material can endure today,” Abouraddy said.
For example, packaging together materials with optical and mechanical properties along with sensors that could monitor such vital sign as blood pressure and heart rate would make it possible to make clothing capable of transmitting vital data to a doctor’s office via the Internet.
The ability to control breakage in a material is critical to developing computerized processes for potential manufacturing, said Yuanli Bai, a fracture mechanics specialist in UCF’s College of Engineering and Computer Science.
Abouraddy contacted Bai, who is a co-author on the paper, about three years ago and asked him to analyze the test results on a wide variety of materials, including silicon, silk, gold and even ice.
He also contacted Robert S. Hoy, a University of South Florida physicist who specializes in the properties of materials like glass and plastic, for a better understanding of what he found.
Hoy said he had never seen the phenomena Abouraddy was describing, but that it made great sense in retrospect.
The research takes what has traditionally been a problem in materials manufacturing and turned it into an asset, Hoy said.
“Dr. Abouraddy has found a new application of necking” – a process that occurs when cold drawing causes non-uniform strain in a material, Hoy said. “Usually you try to prevent necking, but he exploited it to do something potentially groundbreaking.”
The necking phenomenon was discovered decades ago at DuPont and ushered in the age of textiles and garments made of synthetic fibers.
Abouraddy said that cold-drawing is what makes synthetic fibers like nylon and polyester useful. While those fibers are initially brittle, once cold-drawn, the fibers toughen up and become useful in everyday commodities. This discovery at DuPont at the end of the 1920s ushered in the age of textiles and garments made of synthetic fibers.
Only recently have fibers made of multiple materials become possible, he said. That research will be the centerpiece of a $317 Million U.S. Department of Defense program focused on smart fibers that Abouraddy and UCF will assist with. The Revolutionary Fibers and Textiles Manufacturing Innovation Institute (RFT-MII), led by the Massachusetts Institute of Technology, will incorporate research findings published in theNature paper, Abouraddy said.
The implications for manufacturing of the smart materials of the future are vast.
By controlling the mechanical force used to pull the fiber and therefore controlling the breakage patterns, materials can be developed with customized properties allowing them to interact with each other and eternal forces such as the sun (for harvesting energy) and the internet in customizable ways.
A co-author on the paper, Ali P. Gordon, an associate professor in the Department of Mechanical & Aerospace Engineering and director of UCF’s Mechanics of Materials Research Group said that the finding is significant because it shows that by carefully controlling the loading condition imparted to the fiber, materials can be developed with tailored performance attributes.
“Processing-structure-property relationships need to be strategically characterized for complex material systems. By combining experiments, microscopy, and computational mechanics, the physical mechanisms of the fragmentation process were more deeply understood,” Gordon said.
Abouraddy teamed up with seven UCF scientists from the College of Optics & Photonics and the College of Engineering & Computer Science (CECS) to write the paper. Additional authors include one researcher each from the Massachusetts Institute of Technology, Nanyang Technological University in Singapore and the University of South Florida.
The Latest on: Breaking Me Softly
via Google News
The Latest on: Breaking Me Softly
- Searching for bird life in a former ‘ocean of forest’on August 31, 2021 at 8:11 am
Leo Miller, a collector with the American Museum of Natural History, arrived in the Caquetá region of Colombia, where the eastern foothills of the Andes melt into the forested lowlands of the Amazon ...
- Brian Austin Green picks up pet supplies with his three kids in Malibuon August 29, 2021 at 6:29 pm
Brian Austin Green took his three kids Noah Shannon Green, Bodhi Ransom Green and Journey River Green in Malibu.
- Here’s how I tracked down the people selling my data, then stopped themon August 27, 2021 at 3:13 pm
But I hate to break it to you ... careful online in the past, like me. I consider myself more privacy-minded than most, but despite all my years of treading softly on the web and locking down ...
- She Didn’t Believe, But God Heard Her Cryon August 23, 2021 at 5:54 am
Slowly, softly, sometimes painfully ... she’d put her head down on the desk and practice not making eye contact with me for the full 90-minute class. I generally have positive relationships ...
- PAW Patrol Fanfic - Bittersweet Backstoryon August 23, 2021 at 12:39 am
AUTHOR'S NOTE - This story is heavily influenced by the new PAW Patrol movie and the associated Little Golden books. If you haven't seen it yet and don't want to see potential spoilers, please stop ...
- Roswell, New Mexico Season 3 Episode 5on August 22, 2021 at 11:23 pm
The sheriff forces him to arrest two of the men who work on the farm. Protests break out in Roswell, spearheaded by Bert and with Greg’s help, as they protest the arrest of the Lopez men. Maria, ...
- Listen to Angelo Carusone explain how the undeserved praise from the media for Sean Hannity’s COVID comment caused “a lot of damage”on August 20, 2021 at 9:22 pm
Because that Hannity segment that you referenced where he basically said, sort of softly encouraged people ... the way that people got mad at me, some people, because I was being really nasty ...
- What happened on Penn State’s fourth-and-5 play, and why did they run it? Here’s what PSU saidon August 14, 2021 at 12:01 am
Penn State quarterback Trace McSorley spoke softly Saturday night in addressing what he termed “the deciding factor of the game” — the fourth-and-5 call that sent a record-breaking Beaver ...
- Gabriel Davis speaks softly, carries big stature in Bills WR corpson August 5, 2021 at 5:20 am
He spent part of the offseason break training in South Florida with Diggs ... I feel like that’s a difference for me. When I run my 4.5, I can run a 4.5 and I can actually run my routes ...
- Florida boy, 12, charged with attempted murder after shootout with deputies, appears in courton June 3, 2021 at 1:12 pm
A 12-year-old boy accused of escaping from a Florida juvenile facility and breaking into a home before ... The boy, who appeared via Zoom and spoke softly when addressed, was assigned a public ...
via Bing News