| Abstract Scope |
Major challenges still hinder our ability to produce graphene-based microelectrodes with tailored morphology and surface chemistry, especially for flexible applications, such as brain probes. Unlike different techniques of printing carbon-containing ink or parallel transfer of CVD-grown nanocarbons, this talk will focus on a unique bottom-up approach for directly growing different types of graphenic nanocarbons on polymer films by laser irradiation. The speaker will present an approach that leverages this direct-write process, often referred to as laser-induced graphene (LIG), for creating spatially-varying morphologies and chemical compositions of miniaturized LIG electrodes, by leveraging gradients of laser fluence. Moreover, this talk will introduce a method for controlling heteroatom doping of these LIG electrodes based on controlling the molecular structure of the polymer being lased., i.e. by introducing sulfur- and fluorine- containing backbones. We show tunable surface properties, demonstrate their use as electrochemical biosensors, and leverage them for electromagnetic interference shielding. |