AM-KPFM Sulfur Array HighAcpectRatio CVD domain_switching Boron Molybdenum_disulfide Iron Ca10(PO4)6(OH)2 polymeric_arrays Copolymer LithiumNiobate Optoelectronic P3HT Lanthanum_aluminate Trench LateralForceMicroscopy Ucl Gallium Al2O3 SmallScan NUS_Physics block_copolymer hetero_structure PolyvinylAcetate LightEmiting PinPointMode OrganicCompound UnivMaryland UnivCollegeLondon ImideMonomer MoS2 BiasMode EPFL