#  Acoustics 

 



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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](http://pubs.acs.org/doi/abs/10.1021/nl100569w))

   ![nl-2010-00569w_0007.gif](/sites/g/files/omnuum7821/files/styles/hwp_1_1__960x960_scale/public/hellergroup/files/nl-2010-00569w_0007_1.gif?itok=Y6krwfuL) 

 

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.