ScanningKelvinProbeMicroscopy DNAProtein Yttria_stabilized_Zirconia SAM fluoroaalkane Polypropylene ForceMapping SICM #EC FrictionalForceMicroscopy Pore ULCA ring shape SKKU semifluorinated_alkane Dopped Mechanical&nanotechnology INSPParis nanobar University_of_Regensburg Biofilm FloppyDisk Ram blended polymers hard_disk_media Worcester_Polytechnic_Institute Electrical&Electronics SiliconeOxide Polyvinylidene ForceVolumeImage Calcium HBN Gallium thermal_property AlkaneFilm