Si Guangyuan, Leong Eunice S P, Jiang Xiaoxiao, Lv Jiangtao, Lin Jiao, Dai Haitao, Liu Yan Jun
College of Information Science and Engineering, Northeastern University, Shenyang 110004, China.
Phys Chem Chem Phys. 2015 May 28;17(20):13223-7. doi: 10.1039/c5cp00185d.
Active plasmonics has been an interesting and important topic recently. Here we demonstrate the all-optical, polarization-insensitive tunable manipulation of a hybrid system that integrates a silver nanorod array with photoresponsive liquid crystals. The large-area plasmonic nanorod arrays are fabricated by laser interference lithography and ion milling. By covering a layer of photoresponsive liquid crystals, tunable control of plasmon resonance is achieved under an external light pump. The silver nanorod array also enables the homeotropic alignment of the liquid crystals, which makes the all-optical tuning behavior polarization-insensitive. With its advantages of cost-effective fabrication, easy integration, all-optical control, and polarization-insensitivity, the hybrid system could be valuable in many nanophotonic applications.
有源等离子体激元学近来一直是一个有趣且重要的课题。在此，我们展示了一种将银纳米棒阵列与光响应液晶集成的混合系统的全光、偏振不敏感的可调谐操控。大面积的等离子体激元纳米棒阵列通过激光干涉光刻和离子铣削制备而成。通过覆盖一层光响应液晶，在外部光泵浦下实现了对等离子体共振的可调谐控制。银纳米棒阵列还能使液晶实现垂直排列，这使得全光调谐行为对偏振不敏感。凭借其成本效益高的制造、易于集成、全光控制和偏振不敏感等优点，该混合系统在许多纳米光子学应用中可能具有重要价值。
