Colour-tunable spiral photonic actuators
Kwang-Un Jeong, Ji-Hyun Jang, Cheong Yang Koh, Matthew J. Graham, Kwang-Yong Jin, Soo-Jin Park, Changwoon Nah, Myong-Hoon Lee, Stephen Z. D. Cheng and Edwin L. Thomas Department of Polymer-Nano Science and Technology, and Polymer Materials Fusion Research Centre, Chonbuk National University, Korea
Combining the multi-faceted environmental responsiveness of polymers with photonically active structures, we developed spiral photonic actuators which can reversibly change both shape and colour in response to the chemical environment.
Experimental reflectivity spectra of the fabricated photonic crystals: (a) silica, (b) PDMS/silica, (c) PDMS/silica in hexane, and (d) PDMS/silica in acetic acid.
