Tungsten GaAs Inorganic_Compound oxide_layer UnivMaryland ContactMode Composition PVAP3HT Terrace Sidewall SiliconCrystal HighAspect Ni-FeAlloy Alkane Electical&Electronics plastics Collagen ScanningTunnelingMicroscopy MoS2 ForceDistanceSpectroscopy CastIron Zhi Change Ptfe RedBloodCell Tapping Chungnam_National_University Nanofiber Indium_tin_oxide LiftMode Biofilm Polyaniline Conduct Polydimethylsiloxane Ananth