Phosphide dielectric_trench membrane NUS_NNI_Nanocore Photovoltaics Chungnam_National_University NUS Magnetostrictive Wang HBN SingleLayer single_layer CrystalGrowing 2-vinylpyridine exfoliate Composition conductive FM_SKPM dichalcogenide HfO2 LithiumNiobate PFM molecules Strontium SingleCrystal TemperatureControllerStage Led HiVacuum MechanicalProperties AdhesionForce Reduction CalciumHydroxide Tungsten_disulfide Chemical Vapor Deposition Carbon