CrossSection Wafer SolarCell PMNPT VinylAlcohol Optoelectonics Graphene Piezoelectric Graphite LDPE LightEmission flakes WPlug 2dMaterials PFM MagneticPhase Neodymium Writing pinpoint mode polymeric_arrays OxideLayer SAM SiWafer Multiferroic_materials ScanningKelvinProbeMicroscopy Sphere Anneal CeNSE_IISc Nickel GaP Tungsten Ceramics Pinpoint PFM small_scan BlockCopolymer