plastics IIT-chennai Boron Iron Optoelectonics graphene_hybrid Optical H-BN ReflexLens AAO lithography PS_PVAC Hole mechanical_property Ca10(PO4)6(OH)2 Pattern hetero_structure Phase YszSubstrate Blood SSRM Morphology ElectroChemical PolymerBlend MolybdenumDisulfide NusEce STM StrontiuTitanate Mapping Conduct self_healing PFM Potential PS_LDPE Permalloy