KAIST TPU flakes BaTiO3 Ptfe Etch Hexatriacontane OxideLayer Mechanical MeltingPoint PolyvinylideneFluoride small_scan TemperatureControl Techcomp Conductance Bacteria Electrode MolecularSelfAssembly NUS CBD Conducting Spincast molecules layers Kevlar Optoelectronic FM-KPFM molecular_beam Vac Electical&Electronics atomic_layer StrontiuTitanate ScanningIon-ConductanceMicroscopy INSPParis INSP