Current AAO GaN Optic Biofilm ConductingPolymer Chungnam_National_University HOPG SmalScan NeodymiumMagnets chemical_compound Polyaniline Tin disulfide Grain CarbonNanotube Ecoli Electrode Switching ring shape OpticalWaveguide mechanical_property Organic TPU Sidewall cannabinoid graphene_hybrid LeakageCurrent Scratch fluoroalkane membrane SoftSample Polyvinylidene_fluoride plastics STM Regensburg