Catalytically Etching Graphene and Graphite by Metal Particles
Abstract: Graphene stands as a promising material for future nanoelectronics owing to a slew of exotic properties such as micron scale ballistic transport at room temperature, extremely high thermal conductivity, and very high current carrying ability. Future applications necessitate graphene configurations with a particular shape and edge. Metal nanoparticle (NP) etching has emerged as a promising solution for etching graphene along specific crystalline directions. In this work, graphene and graphite etching by metal particles is characterized using low-voltage scanning electron microscopy (LVSEM), optical microscopy, and Raman spectroscopy. Two particle systems are presented, Fe and Cu. LVSEM, utilizing both the SE2 and Inlens detectors, reveals different morphology for the Cu and Fe particles and different etching behaviors due to their distinct interactions with carbon.
Biography: Dr. Calizo is an assistant professor in the Department of Electrical and Computer Engineering at Florida International University with a joint appointment in Mechanical and Materials Engineering. She received her Ph.D. in Electrical Engineering from the University of California Riverside. She was awarded a National Research Council Research Associateship at the National Institute of Standards and Technology prior to her arrival at FIU. Her interests include two dimensional nanomaterials, carbon electronics, and defect science and engineering in nanomaterials. She currently teaches a Nanoelectronic Materials and Introduction to Nanomaterials courses. Her previous investigations included the thermal properties of graphene and more recently she has been looking at etching graphene by metal particles.