In acoustics, partial reflection from walls and various enclosures has long been incorporated for determining reverberation times. Pursuing an exact analogy between the local density of states of a quantum corral and the acoustic impedance of a concert hall, we have shown electron lifetimes in nanoscopic structures of arbitrary convex shape are well accounted for by the Sabine formula for acoustic reverberation times. This provides a particularly compact and intuitive prescription for extrinsic finite lifetimes in a particle-in-a-box with leaky walls, including quantum corral atomic walls, given single particle scattering properties. (Nano Lett., 2010, 10 (9), pp 3253–3260)
We are currently studying the room acoustic response function calculated from point source (delta) emitters and detectors in contrast to the frequency-centric plane wave approach traditionally used.