Tunable Graphene Phononic Crystal
Jan Kirchhof, Kristina Weinel, Sebastian Heeg, Victor Deinhart, Sviatoslav Kovalchuk, Katja Höflich, Kirill I. Bolotin
Abstract
. We exploit graphene's flexibility and simulate mechanical tuning of a finite size PnC. Under electrostatic pressure up to 30 kPa, we observe an upshift in frequency of the entire phononic system by ∼350%. At the same time, the defect mode stays within the bandgap and remains localized, suggesting a high-quality, dynamically tunable mechanical system.
Topics & Concepts
GrapheneMaterials scienceCrystal (programming language)Acoustic metamaterialsOptoelectronicsNanotechnologyBand gapComputer scienceProgramming languageMechanical and Optical ResonatorsAcoustic Wave Phenomena ResearchThermal Radiation and Cooling Technologies