2-vinylpyridine Piezoelectric fe_nd_b Electrode Magnetic Crystal Singapore Bacteria Copper BFO dielectric trench GalliumPhosphide Iron LDPE Edwin PtfeMembrane Ucl Mobile Neodymium LaAlO3 Non-ContactMode contact NanoLithography Leakage NUS_Physics HighAspect semifluorinated alkane SmalScan Polytetrafluoroethylene Piezoresponse Materials domain_switching Strontium VortexCore IndiumTinOxide