TappingMode PiezoelectricForceMicroscopy Magnetic ring shape EvatecAG mechanical property polyvinyl acetate atomic_layer UTEM Foil ConductiveAFM Platinum Polyurethane strontiu_titanate Mosfet Bmp TransitionMetal PDMS ForceVolumeMapping conductive rubber Polypropylene small_scan EPFL DNAProtein Mechinical Varistor ScanningThermalMicroscopy Nanostructure Gallium LiNbO3 Workfunction non_contact food temperature controller AFM