temperature controller AFM PS_PVAC ContactMode Cancer PolyStylene aluminum_nitride Conducting Ito Chemical_Vapor_Deposition Flake P3HT ScanningThermalMicroscopy FloppyDisk PiezoelectricForceMicroscopy Hexatriacontane PUR SThM Al2O3 University_of_Regensburg Pipette Insulator silicon_carbide HexagonalBoronNitride FrictionalForce biocompatible Writing Chungnam_National_University cooling MagneticForce KelvinProbeForceMicroscopy HexacontaneFilm MechanicalProperties Magnetic PinpointNanomechanicalMode F14H20