The University of Texas at Austin
The UT Austin College of Engineering

Chemical Engineer Develops Plastic With Changeable Electrical Conductivity

Dr. Lynn Loo, James Norman, Joung Eun Yoo, and Kwang Seok Lee
Photo: Caroling Lee
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Dr. Yueh-Lin (Lynn) Loo, assistant professor of chemical engineering, in her research lab with students involved in the research to manufacture a plastic with conductive properties. With Loo are students (L-R) James Norman, Joung Eun Yoo, and Kwang Seok Lee. Yoo was lead author, and Lee a co-author, of the April Journal of Materials Chemistry article in which the laboratory demonstrated up to a six-fold increase in conductivity of polyaniline.

Dr. Lynn Loo holding a silicone stamp
Photo: Caroling Lee
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Dr. Yueh-Lin (Lynn) Loo, assistant professor of chemical engineering, bends a silicone stamp used in creating patterns for fabricating polyaniline wires. Since the journal article was submitted, Loo's laboratory has found a way to manufacture polyaniline with 10-fold greater conductivity.

Pliable sheet with printed polyaniline wires and interconnects
Photo: Caroling Lee
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Dr. Yueh-Lin (Lynn) Loo, assistant professor of chemical engineering, displays a pliable sheet with printed polyaniline wires and interconnects.

Vials containing polyaniline solutions
Photo: Caroling Lee
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These vials contain liquid polyaniline solutions used in creating the transistor wires in the sheet above. The water-based solutions are considered critical to making inexpensive polyaniline, and for converting the plastic from a non-conducting state (blue vials) to a conducting state (green vial).