Regularity Maintenance Properties under Deformation of Kink-Introduced Nano-Mille-Feuille Structures Derived from Interfacial Friction

Abstract

The regularity-maintaining properties under the deformation of a kink-introduced “Nano-mille-feuille” structure were verified, which might contribute to the development of high-strength, lightweight materials, and evidence of its usefulness was obtained. Simultaneously, a technique for evaluating the mechanical resistance of a highly ordered Nano-mille-feuille structure obtained by alternately layering individual particle films composed of polymer nanospheres and organo-modified inorganic nanoparticles with a common particle diameter of 5 nm was proposed. The Nano-mille-feuille was prepared on a flexible resin substrate that was subjected to uniaxial drawing deformation using a manual drawing machine to monitor changes in the layered regularity of multiparticle layers on its surface. Furthermore, the same estimation as the kink-introduced Nano-mille-feuille, which was created on an underlayer introducing advance nanometer-sized steps on one-half of the substrate, was made and compared to the regularity-maintaining properties of the Nano-mille-feuille. The presence of kink-like nanosteps demonstrated the effect of enhancing the deformation resistance of the layered regularity of the multiparticle layers. It was confirmed that the presence of kinks maintains the layering regularity of nanoparticles even under drawing deformation at a higher magnification. The presence of nanokinks is expected to enhance the interfacial friction of the particle layers and has shown the possibility of structural/functional correlation that can impart high-strength properties to materials derived from light elements and/or lightweight metals in future.