title: Temperature-Dependent Adhesion of Graphene Suspended on a Trench.
abstract: Graphene deposited over a trench has been studied in the context of nanomechanical resonators, where experiments indicate adhesion of the graphene sheet to the trench boundary and sidewalls leads to self-tensioning; however, this adhesion is not well understood. We use molecular dynamics to simulate graphene deposited on a trench and study how adhesion to the sidewalls depends on substrate interaction, temperature, and curvature of the edge of the trench. Over the range of parameters we study, the depth at the center of the sheet is approximately linear in substrate interaction strength and temperature but not trench width, and we explain this using a one-dimensional model for the sheet configuration.
authors.affiliation: Institute for Scientific Interchange Foundation , Via Alassio 11/C, 10126 Torino, Italy.
authors.forename: Zoe
authors.initials: Z
authors.lastname: Budrikis
authors.affiliation: Institute for Scientific Interchange Foundation , Via Alassio 11/C, 10126 Torino, Italy.|Center for Complexity and Biosystems, Department of Physics, University of Milano , via Celoria 16, 20133 Milano, Italy.|CNR-Consiglio Nazionale delle Ricerche, Istituto per l'Energetica e le Interfasi , Via R. Cozzi 53, 20125 Milano, Italy.|Department of Applied Physics, Aalto University , FIN-11100 Aalto, Espoo, Finland.
authors.forename: Stefano
authors.initials: S
authors.lastname: Zapperi
mesh_terms: D006108:Graphite / Q000737:chemistry*; D056004:Molecular Dynamics Simulation; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D013499:Surface Properties; D013696:Temperature; D013814:Thermal Conductivity
chemical_list: D006108:Graphite
keywords: Graphene; adhesion; nanoelectromechanical systems (NEMS); substrate; thermal