ACS Appl Mater Interfaces. 2013 Jun 12;5(11):4569-74. doi: 10.1021/am400019v. Epub 2013 May 17.
Active tunable plasmonic cap arrays were fabricated on a flexible stretchable substrate using a combination of colloidal lithography, lift-up soft lithography, and subsequent electrostatic assembly of gold nanoparticles. The arrangement of the plasmonic caps could be tuned under external strain to deform the substrate in reversible. Real-time variation in the arrangement could be used to tune the optical properties and the electromagnetic field enhancement, thereby a proving a promising mechanism for optimizing the SERS sensitivity.
采用胶体光刻、提拉软光刻以及后续的金纳米粒子静电组装相结合的方法，在柔性可拉伸衬底上制备了主动可调谐等离子体帽阵列。在外力作用下，等离子体帽的排列可以进行调节，从而使衬底发生可逆的变形。排列的实时变化可用于调节光学性质和电磁场增强，从而为优化 SERS 灵敏度提供了一种很有前途的机制。
