PFM Array Zhi Magnetostrictive Scanning_Thermal_Microscopy EvatecAG Hexylthiophene Metal Fiber Grain Beads dielectric trench AM_KPFM Friction LiIonBattery RedBloodCell ForceVolumeImage HighAspect ScanningThermalMicroscopy PtfeMembrane Vac C36H74 bias_mode StainlessSteel UTEM small_scan Regensburg TPU PiezoelectricForceMicroscopy Hafnia Fe_film Conductivity neodymium_magnets BariumTitanate epitaxy