Discipline: Technology and Engineering
Subcategory: Electrical Engineering
Nestor O Marquez Rios - University of South Florida
Co-Author(s): Dr. Arash Takshi, University of South Florida, Tampa, Florida.
With the increasing interest in wearable electronics, still, building electronic circuits on fabrics is challenging. Among different approaches, fiber shape electrochemical transistors are potentially suitable for various applications, particularly for bioelectronics. Fiber-based devices are getting popular because of their low fabrication cost, light weight, and flexibility without losing their properties as sensors and transistors. In this work, we have studied various types of commercially available threads for their applications in fiber-shaped organic electrochemical transistor made with a gel electrolyte. Using 100% cotton, 75% -25% cotton-polyester, and 68% Polyester – 32% Cotton, three different transistors were fabricated and characterized. Devices were made by first coating the threads with PEDOT:PSS polymer. Having a silver coated thread as a gate and a polyvinyl alcohol (PVA) based gel electrolyte; different voltages were applied to the transistors and the current through the PEDOT:PSS was monitored. Best signals were obtained using transistors based on 25% cotton 75% polyester threads. The results showed good promising signal so it led us to think it can be tested on some other devices commonly used in new low-cost, flexible bioelectronics sensing devices like sensors on sweat.
Funder Acknowledgement(s): LSAMP BD: University of South Florida Florida-Georgia Louis Stokes Alliance for Minority Participation (FGLSAMP) – HRD # 1906518
Faculty Advisor: Dr. Arash Takshi, firstname.lastname@example.org
Role: Making PEDOT:PSS solution, making the gel electrolyte solution. Also, building the transistor and taking the data.