ConductiveAFM Optoelectonics Iron HexagonalBoronNitride Tape NtuEee Bismuth norganic Wafer Mapping high_resolution PyroelectricDetector Thermal FAPbI3 temp MESA structure MLCC heterojunctions PatternedSapphireSubstrat CrossSection FrictionForce Morphology SPMLabs Blood Singapore Microchannel Electrical&Electronics ScratchMode ForceMapping domain_switching Carbon Change LFM MBE HardDisk