PMNPT DomainSwitching SPMLabs Cobalt Piezo CHRYSALIS_INC Worcester_Polytechnic_Institute ItoGlass cross section Cross-section Indent Pattern LFM Nanostructure Semiconductor Sadowski PhaseImaging aluminum_nitride LateralPFM layers Display CalciumHydroxyapatite IRDetector SetpointMode Dimethicone Ananth PECurve heterojunctions domain_switching Switching Beads PolyimideFilm fluoroaalkane LightEmiting Polyurethane