Finlayson Chris E, Baumberg Jeremy J
Department of Physics, Prifysgol Aberystwyth University, Aberystwyth, Wales SY23 3BZ, UK.
Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK.
Materials (Basel). 2017 Jun 22;10(7):688. doi: 10.3390/ma10070688.
We review recent advances in the generation of photonics materials over large areas and volumes, using the paradigm of shear-induced ordering of composite polymer nanoparticles. The hard-core/soft-shell design of these particles produces quasi-solid "gum-like" media, with a viscoelastic ensemble response to applied shear, in marked contrast to the behavior seen in colloidal and granular systems. Applying an oscillatory shearing method to sub-micron spherical nanoparticles gives elastomeric photonic crystals (or "polymer opals") with intense tunable structural color. The further engineering of this shear-ordering using a controllable "roll-to-roll" process known as Bending Induced Oscillatory Shear (BIOS), together with the interchangeable nature of the base composite particles, opens potentially transformative possibilities for mass manufacture of nano-ordered materials, including advances in optical materials, photonics, and metamaterials/plasmonics.
我们回顾了利用复合聚合物纳米粒子的剪切诱导有序排列范式，在大面积和大体积光子材料生成方面的最新进展。这些粒子的硬核/软壳设计产生了准固体的“胶状”介质，对施加的剪切力具有粘弹性整体响应，这与胶体和颗粒系统中的行为形成显著对比。对亚微米级球形纳米粒子应用振荡剪切方法可得到具有强烈可调结构色的弹性光子晶体（或“聚合物蛋白石”）。利用一种称为弯曲诱导振荡剪切（BIOS）的可控“卷对卷”工艺对这种剪切有序排列进行进一步工程设计，再结合基础复合粒子的可互换性质，为纳米有序材料的大规模制造开启了潜在的变革性可能性，包括光学材料、光子学以及超材料/等离子体学方面的进展。
