PolyvinylAcetate Conductance Varistor pulsed_laser_deposition LithiumNiobate Pinpoint PtfeMembrane Array Perovskite plastics MESA structure Oxidation Semiconductor Roughness I-VSpectroscopy Optic thermoplastic_elastomers Modulus StainlessSteel Pinpoint PFM InLiquid Sio2 hard_disk_media PetruPoni self_healing HOPG Optical Water Led exfoliate STM Spain Boron Vanadate ItoGlass