doped Wonseok gallium_nitride Biology Conduct ThermalDetectors Cross-section Defects PVA Switching graphene_hybrid Polarization vertical_PFM FM-KPFM UTEM HfO2 BoronNitride ScratchMode DiffractiveOpticalElements YttriaStabilizedZirconia TappingMode SurfaceOxidation MolybdenumDisulfide fe_nd_b Conducting neodymium_magnets Terrace Ito FrictionForce Electical&Electronics Spincast Floppy Chloroform CVD PANI