Study on a Photonic Crystal Hydrogel Material for Chemical Sensing Xu, Jia-Yu ; Yan, Chun-Xiao ; Hu, Xiao-Chun ; Liu, Chao ; Tang, Hua-Min ; Zhou, Chao-Hua ; Xue, Fei Abstract Publication: International Journal of Nanoscience Pub Date: February 2015 DOI: 10.1142/S0219581X14600254 Bibcode: 2015IJN....1460025X