Hexylthiophene non_contact kelvin probe force microscopy Titanate NUS_NNI_Nanocore MagneticPhase MechanicalProperties Water CalciumHydroxide Indent MolecularSelfAssembly GlassTemperature Gong BismuthFerrite NUS_Physics 3-hexylthiophene AtomicSteps PolymerPatterns mono_layer Solar Mechinical Vanadate SmalScan Polarization Lateral SiliconOxide ThermalProperties LiftMode Chromium SiliconeOxide Lanthanum_aluminate Polyvinylidene fluorocarbon Pvdf UnivCollegeLondon