Piezoresponse Optoelectronic Hexacontane mechanical property Modulus WPlug self-assembly ItoGlass HOPG IVSpectroscopy LateralForce phase_change Aggregated_molecules dielectric trench plastics AtomicSteps fluoroalkane SmalScan Flake Strontium BlockCopolymer Graphite Heating InorganicCompound TiO2 Austenite PhaseImaging #Materials HanyangUniv Jason Yeditepe LiftMode LiBattery Phthalocyanine LiquidImaging