TappingMode MultiferroicMaterials optoelectronics Floppy small_scan Mechanical&nanotechnology LightEmission PetruPoni Thermoplastic_polyurethane MESA structure IIT-chennai AdhesionForce CNT Phase AtomicSteps strontiu_titanate NTU UTEM NeodymiumMagnets Dental CuFoil Fet HafniumDioxide StrontiumTitanate TemperatureControllerStage TPU Heat INSP DIWafer Ferroelectric PUR 2d_materials PFM oxide_layer INSPParis