Calcium WS2 CuSubstrate ScanningTunnelingMicroscopy PDMS cannabidiol rubber single_layer C60H122 vertical_PFM Conductivity Wang BiasMode Styrene Christmas Au111 Fendb gallium_nitride cannabinoid #Materials Phase Global_Comm biocompatible light_emission Cell TemperatureControl INSPParis Ferrite Austenite Croatia Array Adhesive MESA structure Defects Phenanthrene