  The intrinsic flexible character of polymeric materials also causes
remarkable strain deformations along directions perpendicular to the applied
stress. Here the biaxial response in the shear piezoelectricity of
polyvinylidenefluoride copolymers is analyzed and their full piezoelectric
tensors are provided. The microscopic shear is exploited in single suspended
nanowires bent by localized loading to couple flexural deformation and
transverse piezoelectric response.
