phase_change ChemicalCompound ForceVolume Fujian Pattern hetero_structure molecular_beam nanobar Pores ConductingPolymer MechanicalProperties Sulfur PolymerBlend Pvdf IRDetector Global_Comm PVAP3HT Vac Chemical Vapor Deposition Materials Dopped Ferrite Potential NUSNNI Force-distance Silver PANI temperature controller AFM Nanotechnology Melt StrontiumTitanate Electrode biocompatible Array TemperatureControl