Layer PyroelectricDetector Phenanthrene piezoelectric force microscopy Barium_titanate Worcester_Polytechnic_Institute PolyvinylideneFluoride align 2-vinylpyridine MoirePattern Conductive AFM Zhi FuelCell CompactDisk FFM NCM\ Indium_tin_oxide Graphite Gong Film CopperFoil SmalScan ForceDistanceSpectroscopy conductive Logo Electrical&Electronics PUR atomic_steps Morphology CVD Biology PvdfBead FrictionalForce AtomicSteps OxideLayer