|About this Abstract
||2013 TMS Annual Meeting & Exhibition
||2013 and Beyond: Flexible Electronics
||Flexible Organic Thin Film Transistors for Neural Interfaces
||Adrian E Avendano, Taylor Ware, Dustin Simon, David Arreaga-Salas, Walter Voit
|On-Site Speaker (Planned)
||Adrian E Avendano
The need to identify and measure neural interactions in a more precise way is pushing the limit of current technologies. More sophisticated devices, like microelectronic processing, are needed. Current devices are fabricated on stiff materials with a large mismatch in modulus compared to the tissue with which they interact. This contributes to a short device lifetime. We integrate circuitry using thin film transistors (TFTs) with shaped memory polymers (SMP) that show biocompatibility and are physiologically responsive. The devices can withstand the environment of the body and soften to decrease the above mentioned mechanical mismatch. We demonstrate a process to fabricate reliable, biocompatible organic pentacene TFTs with good mobilities (0.2 cm2/Vs) and threshold voltages close to 0V. To enable their usability in the body environment, devices were encapsulated with SMP layers and inorganic layers such as SiO2. Devices were also subjected to several bending cycles to show mechanical stability.