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Meeting 2013 TMS Annual Meeting & Exhibition
Symposium 2013 and Beyond: Flexible Electronics
Presentation Title Electrochemical Properties of Neural Interfaces on Smart, Softening Substrates
Author(s) Ryan Marcotte, Dustin Simon, Taylor Ware, David Eduardo Arreaga-Salas, Walter Voit
On-Site Speaker (Planned) Ryan Marcotte
Abstract Scope Traditional neural interfaces are limited in functionality and longevity due to their lack of biocompatibility. A new class of dynamic materials known as shape memory polymers has been introduced as an alternative to conventional substrates for neural interfaces. Using photolithography, gold electrodes are deposited on a smart, softening thiol-ene/acrylate polymer substrate to achieve a reliable communication platform for recording neural activity. Recording electrodes have been designed with geometric surface areas ranging from 177 to 2.5 million square microns. The different-sized sites allow for unique, tailorable electrochemical properties for each probe. The substrate softens at body temperature with minimal fluid uptake and without dramatic change in electrochemical properties. Under prolonged exposure to simulated physiological conditions, the 177 square micron device has been proven capable of maintaining its electrical integrity, with a typical impedance shift (at 1 kHz) from 1.650.95 to 0.330.19 MΩ after 30 days.
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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