Silver Holes Stiffness light_emission Piranha HexacontaneFilm LowDensityPolyethylene CVD Multiferroic_materials Lateral_Force_Microscopy Kevlar DNA NiFe ContactModeDot dielectric trench FM_KPFM conductive PFM Mechinical LateralForce Regensburg ContactModeDots Au111 KPFM MembraneFilter Bismuth Layer Polymer Fiber Molybdenum Copolymer DataStorage Logo Chromium DLaTGS