title: Compressible Viscoelastic Liquid Effects Generated by the Breathing Modes of Isolated Metal Nanowires.
abstract: Transient absorption microscopy is used to examine the breathing modes of single gold nanowires in highly viscous liquids. By performing measurements on the same wire in air and liquid, the damping contribution from the liquid can be separated from the intrinsic damping of the nanowire. The results show that viscous liquids strongly reduce the vibrational lifetimes but not to the extent predicted by standard models for nanomaterial-liquid interactions. To explain these results a general theory for compressible viscoelastic fluid-structure interactions is developed. The theory results are in good agreement with experiment, which confirms that compressible non-Newtonian flow phenomena are important for vibrating nanostructures. This is the first theoretical study and experimental measurement of the compressible viscoelastic properties of simple liquids.
authors.affiliation: †Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670, United States.
authors.forename: Kuai
authors.initials: K
authors.lastname: Yu
authors.affiliation: †Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670, United States.
authors.forename: Todd A
authors.initials: TA
authors.lastname: Major
authors.affiliation: ‡School of Mathematics and Statistics, The University of Melbourne, Victoria 3010, Australia.
authors.forename: Debadi
authors.initials: D
authors.lastname: Chakraborty
authors.affiliation: †Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670, United States.
authors.forename: Mary Sajini
authors.initials: MS
authors.lastname: Devadas
authors.affiliation: ‡School of Mathematics and Statistics, The University of Melbourne, Victoria 3010, Australia.
authors.forename: John E
authors.initials: JE
authors.lastname: Sader
authors.affiliation: †Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670, United States.
authors.forename: Gregory V
authors.initials: GV
authors.lastname: Hartland
mesh_terms: D004548:Elasticity; D053770:Nanowires / Q000737:chemistry*; D014783:Viscosity
keywords: Transient absorption microscopy; acoustic modes; energy dissipation; nanomaterials; viscoelastic fluids