Nonlinear Elasticity Effects in Core-Shell III- N Piezo-Semiconductive Nanowires

III-nitride core-shell nanowires appear to be promising and versatile nanostructures for fabricating high performance piezoelectric nanodevices. Possible applications range from mechanical sensing to piezotronics and piezophototronics. The paper discusses the effect of nonlinear elasticity on the piezopotential and other relevant features generated by III-N core-shell nanowires. The presented results are aimed at providing useful guidelines for the design of such devices.