GranadaUniv semifluorinated_alkanes Tungsten SurfaceChange MBE ScanningSpreadingResistanceMicroscopy Bismuth BismuthVanadate EFM Gallium_Arsenide Polydimethylsiloxane BFO CntFilm LiNbO3 Liquid ScratchMode FastScan heterojunctions KelvinProbeForceMicroscopy FrictionalForceMicroscopy TemperatureControl Alkane Celebration Writing Piranha Copper Optic PinPointMode layers LiquidCell Temperature Perovskite Filter ferromagnetic Sphere