non_contact blended polymers OxideLayer ScanningIon-ConductanceMicroscopy optoelectronics align cannabidiol SPMLabs ito_film Zhi Regensburg ContactMode Bmp kelvin probe force microscopy HardDisk Polymer Piranha Phenanthrene PinpointPFM MembraneFilter Epoxy temp LifeScience TipBiasMode Film NanoLithography OpticalWaveguide SmalScan temp_control SSRM Deposition LiquidImaging ThermalDetectors GlassTemperature hard_disk_media