4 papers
Air-coupled ultrasound using broadband shock waves from piezoelectric spark igniters
K. G. Scheuer, R. G. DeCorby
We used an optomechanical sensor to study the ultrasound generated by manually operated piezoelectric spark igniters. These low-energy sparks produce short-duration acoustic shock-…
Coupling the thermal acoustic modes of a bubble to an optomechanical sensor
K. G. Scheuer, F. B. Romero, R. G. DeCorby
We report experimental observations of the volume acoustic modes of air bubbles in water, including both the fundamental Minnaert breathing mode and a family of higher-order modes…
Ultrasonic spectroscopy of sessile droplets coupled to optomechanical sensors
Kyle G. Scheuer, Franz B. Romero, Graham J. Hornig +1
We describe a system for interrogating the acoustic properties of sub-nanoliter liquid samples within an open microfluidics platform. Sessile droplets were deposited onto integrate…
Ferrell-Berreman modes in plasmonic epsilon-near-zero media
Ward D. Newman, Cristian L. Cortes, Jon Atkinson +3
We observe unique absorption resonances in silver/silica multilayer-based epsilon-near-zero (ENZ) metamaterials that are related to radiative bulk plasmon-polariton states of thin-…