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FOR RELEASE: Tuesday, August 22, 2006
Nanowire-Paper Offers Strength, Flexibility University of Arkansas researchers have created fibrous nanomaterial for fabricating robust, paper-like materials and devices.
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.
### Contact:Z. Ryan Tian,
assistant professor of chemistry and biochemistry Melissa Lutz
Blouin, managing editor for science and research communications |
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