Al2O3 Korea C60H122 neodymium_magnets Grain Piezo China exfoliate ContactModeDot Multiferroic_materials FrictionalForceMicroscopy EvatecAG SThM KevlarFiber LFM NusEce Pyroelectric MfmPhase Polytetrafluoroethylene Croatia UTEM Film Trench TungstenDeposition Sidewall SiliconOxide Electical&Electronics Fe_film MolecularSelfAssembly Conducting align CBD silicon_oxide Ferroelectric InorganicCompound