(6fv) Advance Manufacturing of Materials for Flexible and Stretchable Devices

Electrochemical analysis of sweat is an ideal scheme for uninterruptedly tracing a person’s physiological condition, however, developing devices for this is challenging. A wearable sweat

monitor that measures several biomarkers is an advance technology that connect smart electronic to point of care detection of biomolecules. Here, we came up with an idea where we can use advance manufacturing (3D printed as well as microfluidic liquid metal microchannels) and stretchable elastomer polydimethylsiloxane (PDMS) along with graphene as components of a flexible and stretchable plastic transistor that can analysis sweat in real-time. The liquid metals contacts encapsulated in PDMS serve as source, drain and gate electrode of a transistor. The purpose of a semiconductor is served by a thin layer of spray-painted graphene oxide on gate electrode. The 3D printed microchannels on the graphene film act as a reaction chamber for antigen–antibody interactions and provide an easy path for fast electron transport toward the electrode from the electrolyte, resulting in improved electrochemical performance of the sweat sensor. This wearable transistor sensor can also detect other biomarkers, such as, glucose, cholesterol and breast cancer which would be an economic and easy alternative to the existing senor devices.