Polydimethylsiloxane Pores ContactModeDots hetero_structure domain_switching Fluoride SmallScan pinpoint mode Trench graphene_hybrid Photovoltaics flakes PolymerBlend mechanical property Treatment PvdfBead Nanopattern Electrode AnodizedAluminumOxide gallium_nitride Nanofiber Molybdenum_disulfide Optic GlassTemperature Christmas nanomechanical 2d_materials dielectric_trench BTO ItoGlass mechanical_property HexacontaneFilm Hysteresys #Materials Ca10(PO4)6(OH)2