Fig. 2: Experimental demonstration of acoustic analogue of Malus’s law through orbital meta-atoms. | Nature Communications

Fig. 2: Experimental demonstration of acoustic analogue of Malus’s law through orbital meta-atoms.

From: Super-resolution acoustic displacement metrology through topological pairs in orbital meta-atoms

Fig. 2

a Topography of designed phase units of “0” and “π”. b, c Fabricated samples comprised of two orbital meta-atoms with \(q=2\) (b) and \(q=4\) (c). d Setup for interference measurement. e, f Measured (red balls) and theoretical (solid curves) acoustic intensity for the samples of \(q=2\) (e) and \(q=4\) (f). The error bars are the standard deviation of three measurements.

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