NtuEee Optic LowDensityPolyethylene F14H20 Inorganic_Compound plastics Filter SiliconeOxide H-BN MfmPhase SrTiO3 cross section Polytetrafluoroethylene optoelectronics Platinum STO flakes CrAu University_of_Regensburg Electrode OpticalWaveguides hard_disk_media fe_nd_b BFO SKPM DLaTGS MagneticForceMicroscopy PinpointPFM Ucl ConductiveAFM NTU Spain Insulator Battery cannabinoid