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Meeting 2013 TMS Annual Meeting & Exhibition
Symposium 2013 and Beyond: Flexible Electronics
Presentation Title Flexible Organic Thin Film Transistors for Neural Interfaces
Author(s) Adrian E Avendano, Taylor Ware, Dustin Simon, David Arreaga-Salas, Walter Voit
On-Site Speaker (Planned) Adrian E Avendano
Abstract Scope 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.
Proceedings Inclusion? Planned:


Brain Matched Magnetic Susceptibility in Metallic Alloys for Use during MR Imaging
Electrochemical Gating and Oxide Field-effect Transistors: Switching Speed and Device Stability Issues
Electrochemical Properties of Neural Interfaces on Smart, Softening Substrates
Fabricating High-Strain Capacity Conductors on Shape Memory Polymers in Metastable States to Accommodate Large Shape Changes in Flexible Electronic Devices
Flexible Organic Thin Film Transistors for Neural Interfaces
Flexible Organic Transistors on Shape Memory Polymer Substrates for Conformable Biointegrated Interfaces
Flexible, Large-Area Sensor Circuits Fabricated by Additive Printing
Graphene Coated with Titanium Nitride as Electrode Materials for Neural Interfaces
Growth Time Performance Dependence of Vertically Aligned Carbon Nanotube Supercapacitors Grown on Aluminum Substrates
High-Performance Flexible Organic Photovoltaic Cells with Amorphous ZITO Electrode
Low-Temperature Materials for a Neuromorphic Architecture
Shape Memory Polymer Substrates for Softening, 3D Neural Interfaces
Use of Compliant Materials in the Fabrication of a Flexible Utah Neural Interface Electrode Array

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