PDMS Tape SSRM HDD Pore BismuthVanadate molecule Mechanical dielectric trench Electrode vertical_PFM Insulator PinPointMode PinpointNanomechanicalMode ThermalProperties #Materials Foil graphene_hybrid Formamidinium_lead_iodide ImideMonomer BaTiO3 gallium_nitride Pipette PolycrystallineFerroelectricBCZT Techcomp Terrace LogAmplifier Wildtype HiVacuum domain_switching MagneticForce Conductance Temasek_Lab Strontium UnivCollegeLondon