Copper Boundary PolyvinylideneFluoride FM_KPFM MLCC Cross-section Ceramics Piezo Bismuth DLaTGS Protein molecule ContactModeDots blended polymers FM_SKPM Phthalocyanine Mapping 3-hexylthiophene SmallScan Microchannel PANI Potential NanoLithography heterojunctions NUSNNI LFM Monisha Indent frequency_modulation StainlessSteel Annealed Conductive AFM Mobile India TriGlycineSulphate