Topologically optimized flexible tricolor-shape micro-fibre arrayed film and three-dimensional tube display concurrent magnetism, luminescence and conductive aeolotropy

From the perspective of topology design, innovative devise concepts and manufacturing technologies are of great significance for manufacturing high-performance multifunctional composites. Herein, a one-dimensional tricolor-shape micro-fibre was innovatively devised and constructed via a triaxial parallel electro-spinning. As a study case and application, the unique structured [CoFe2O4/polymethylmethacrylate (PMMA)]//[polyaniline (PANI)/PMMA]//[Eu(TTA)3phen/PMMA] magnetic-conductive-luminescent multi-functionalized tricolor-shape micro-fibre arrayed film (marked as MTMAF) were fabricated by orientational arrangement of the tricolor-shape micro-fibres. Meanwhile, magnetic-conductive-luminescent multi-functional quasi tricolor-shape micro-fibre arrayed film (marked as MQMAF) and magnetic-conductive-luminescent multi-functional tricolor-shape nano-strip arrayed film (marked as MTNAF) were also fabricated by alteration of the proportions of solvents. It is further found that MTMAF has better performances than those of MTNAF and MQMAF. The tricolor-shape micro-fibre achieves the partitioning of three separate functional partitions on the microscopic-level through the elaborate topology devise and an electrospinning technology. More importantly, since magnetic, conductive, and luminescent fillings are limited in their subareas, adverse interactions among them can be effectively avoided, resulting in superior poly-functional performances. Since the intense conductive aeolotropism and multifunctionality, MTMAF can be employed as a stable micro-circuit interconnection, offering a foundation for practical applications. Red luminescence can be used to supervise whether MTMAF properly works or not in darkness. Three-dimensional tubes are constructed via crimping the MTMAF in two various modes. The high integration of zero-dimensional nanoparticles, one-dimensional micro-construction blocks, two-dimensional films and three-dimensional tubes is achieved in one material. The construction of three-dimensional tubes achieves the transformation of materials from two-dimension to three-dimension. Furthermore, a universal technique to manufacture micro-fibre/nano-strip with three micro-subareas has been established for constructing multi-functional composites, other functional fillings also can be introduced into the tricolor-shape micro-fibre/nano-strip to achieve different multi-function.