Figure 8.

(a) Light driven plasmonic color filter tuned by liquid crystals. The nanostructure used is a new type AAA that can generate different colors by changing the sizes and periods of AAA. One example of AAA is given in the inset; (b) different colors generated using plasmonic color filters. By pumping the liquid crystal mixtures to realign the liquid crystal molecule orientation, intensity modulation on the ultra-small color filter can be achieved and demonstrated in the reported work.; (c) one representative case of reconfigurable plasmonic absorber using liquid crystal. The small and big nanodisk arrays in the inset are designed to produce two absorption maximums to improve the performance of the plasmonic absorbers and (d) light sensitive liquid crystal mixture is used to tune the absorption dips in real time. Experimental results confirm a tuning range around 25 nm in the near infrared range. Figure 8a,b is adapted from reference [39] while Figure 8c,d is adapted from reference [45].