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Updated: Feb 12, 2026

Enhancement Method of Surface Acoustic Wave-Atomizer Efficiency for Olfactory Display
Published on: November 14, 2018
Acoustic Purcell Effect for Enhanced Emission
Maryam Landi1, Jiajun Zhao2,3, Wayne E Prather1
1National Center for Physical Acoustics and Department of Physics and Astronomy, University of Mississippi, University, Mississippi 38677, USA.
Abstract:
We observe that our experimentally measured emission power enhancement of a speaker inside a previously proposed metacavity agrees with our numerically calculated enhancement of the density of states (DOS) of the source-cavity system. We interpret the agreement by formulating a relation between the emitted sound power and the acoustic DOS. The formulation is an analog to Fermi's golden rule in quantum emission. The formulation complements the radiation impedance theory in traditional acoustics for describing sound emission. Our study bridges the gap between acoustic DOS and the acoustic Purcell effect for sound emission enhancement.
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