Fiber PvdfFilm Polyimide cannabis TemperatureControl Temasek_Lab HexagonalBN Sapphire Semiconductor Kevlar Worcester_Polytechnic_Institute PtfeMembrane PetruPoni FrequencyModulation Polyurethane ThermalConductivity PtfeFilter Alkane PFM fifber Boron Magnets Ptfe temperature controller AFM SSRM self_assembly FuelCell Optoelectonics Sphere SetpointMode FAPbI3 contact domain_switching Ferroelectric I-VSpectroscopy