hetero_structure Subhajjit vertical_PFM Graphene LFM Protein IIT-chennai CastIron SelfAssembly BismuthVanadate Photovoltaics LDPE Molybdenum ThermalProperties ScratchMode ring shape epitaxy SmallScan ItoGlass NUS_Physics Vacuum DomainSwitching Formamidinium_lead_iodide Graphite Wonseok I-VSpectroscopy Composite Ceramic Genetic pinpoint mode HDD Croatia Pvdf PANI Reduction