LithiumNiobate Photovoltaics Spain PinpointNanomechanicalMode Formamidinium_lead_iodide HfO2 BiVO4 Bio Semiconductor ito_film China Co/Cr/Pt SPMLabs SAM Strontium piezoelectric force microscopy Polystyrene membrane AM_SKPM Sidewall HafniumDioxide MfmAmplitude conductive Chemical Vapor Deposition SrO TemperatureControl Liquid Oxidation Ceramics Copolymer molecular_self_assembly Current ShenYang MoS2 Tungsten