Nanowire-Paper Offers Strength, Flexibility
FAYETTEVILLE, Ark. — University of Arkansas researchers have created assemblies of nanowires that show potential in applications such as armor, flame-retardant fabric, bacteria filters, oil cracking, controlled drug release, decomposition of pollutants and chemical warfare agents.
This two-dimensional “paper” can be shaped into three-dimensional devices. It can be folded, bent and cut, or used as a filter, yet it is chemically inert, remains robust and can be heated up to 700 degrees Celsius.
“Humans have used paper made from natural fibers for thousands of years,” said Z. Ryan Tian, assistant professor of chemistry and biochemistry in the J. William Fulbright College of Arts and Sciences. “With this technology, we are entering a new era.” The researchers published their findings in the Journal of Physical Chemistry B.
Tian and his team used a hydrothermal heating process to create long nanowires out of titanium dioxide and from there created free-standing membranes. The resulting material is white in color and resembles regular paper. Further, the material can be cast into different three-dimensional shapes, with different functions. The researchers have created tubes, bowls and cups using this process. These three-dimensional hollow objects can be manipulated by hand and trimmed with scissors, the researchers report.
The university has applied for patent protection on the process used to create the free-standing membranes for filtration and catalysis, and is looking for industrial partners to license and commercialize various applications of the nanopaper technology.
The exercise will be held in the Garland Avenue Parking Garage from 9 a.m. to noon, with UAPD and NWA emergency responders taking part.
Graduate students will battle to win the U of A Three Minute Thesis competition starting at 2:30 p.m. today, Nov. 19, in Agricultural, Food and Life Sciences Building Room 107E.
After almost 54 years of service, professor Ing-Chang Jong of the Department of Mechanical Engineering, is retiring at the end of the year. The department will host a reception Dec. 7.
The Panamanian Student Organization invites all students to celebrate 'Panama's Month' from 5-7 p.m. Tuesday, Nov. 27, in the Arkansas Union International Connections Lounge.
The Transgender Day of Remembrance is a day to commemorate the lives of transgender people whose lives were lost due to anti-transgender violence. Events include a candlelight vigil at 5 p.m.