Two-dimensional nanomaterialsElectromagnetic wave absorptionAbsorption mechanismHierarchical structuresHybridizationREDUCED GRAPHENE OXIDEENHANCED MICROWAVE-ABSORPTIONMETAL-ORGANIC-FRAMEWORKIN-SITU GROWTHBROAD-BANDCARBON NANOTUBESFACILE SYNTHESISLOW-FREQUENCYINTERFACIAL POLARIZATIONHETEROGENEOUS INTERFACES