Nanowire "paper" creates 3D objects
Filed in archive Materials on August 23, 2006
University of Arkansas researchers have created assemblies of nanowire "paper" 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, according to a university press release.
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.
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. (photo University of Arkansas)

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