Flake block_copolymer WWafer NUSNNI Plug StyreneBeads PatternedSapphireSubstrat Tapping Lanthanum_aluminate Non-ContactMode Nickel Typhimurium biocompatible CaMnO3 Change UnivCollegeLondon tip_bias_mode Piezoelectric Kevlar Yeditepe Adhesion Sadowski cannabinoid Hexacontane Vortex Spincast Conductance non_contact Workfunction frequency_modulation Temasek_Lab Chromium PiezoelectricForceMicroscopy VortexCore TemperatureControlledAFM