Project title: High Performance Graphene-Nanocomposite Thin Film Sensors
Source of support: University of California, San Diego
Graphene has emerged as one of the most impressive materials, harboring both excellent mechanical and electrical properties. The objective of this research is to devise a simple and low-cost fabrication method for assembling graphene-based multifunctional thin films. As a step towards this long-term goal, the initial work focuses on designing and validating the performance of graphene-polymer thin film strain sensors (Fig. 1). The dispersion of graphene was characterized extensively so that solution-based techniques could be employed for film fabrication. Then, the piezoresistivity of these films were validated using tensile-compressive cyclic load tests, and its strain sensitivity, stability, and resolution was optimized.