Topography non_contact AlkaneFilm Tungsten_disulfide OrganicSemiconductor thermoplastic_elastomers Formamidinium_lead_iodide DOE Stiffness Piranha Logo MoS2 ForceVolumeMapping LateralForce Optoelectonics KelvinProbeForceMicroscopy Phthalocyanine Litho high_resolution SPMLabs PUR hetero_structure lift_mode CuSubstrate Polydimethylsiloxane small_scan ScanningKelvinProbeMicroscopy GaP CancerCell Glass INSP Pinpoint P3HT Lateral SICM