Patricia Jastrzebska-Perfect, Columbia University
Mixed-Conducting Particulate Composites for Soft Electronics
Written by Alana F. Ogata
Patricia Jastrzebska-Perfect’s research is driven by a need for materials composed of both hard and soft components that can interface with biological substrates. A major challenge in developing neural interface devices is the large mechanical mismatch between hard and soft materials. Mixed conducting particulate composite materials can achieve the strength and stability required for bonding and provide biocompatibility necessary for device integration into brain tissue. Jastrzebska-Perfect incorporates PEDOT:PSS particles into an electronically insulating scaffolding matrix to create devices capable of recording neurophysiological data in rodents. Additionally, mixed-conducting particle composite devices show high spatiotemporal bipotential sensing capabilities in humans for intra-operative neural recordings. Devices placed on the wrists of patients can measure electrophysiological signals as the patient sequentially moves each finger.