Compressible Viscoelastic Liquid Effects Generated by the Breathing Modes of Isolated Metal Nanowires
Kuai Yu, Todd A Major, Debadi Chakraborty, Mary Sajini Devadas, John E Sader, Gregory V Hartland
NANO LETTERS | AMER CHEMICAL SOC | Published : 2015
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 impo..View full abstract
Awarded by United States National Science Foundation
Awarded by Office of Naval Research
Awarded by Division Of Chemistry
This work was supported by the United States National Science Foundation (CHE-1110560), the Office of Naval Research (Award No. N00014-12-1-1030), and the University of Notre Dame Strategic Research Initiative. The authors gratefully acknowledge support of the Australian Research Council Grants Scheme.