fig1
Figure 1. (A) Mechanism of urea sensing using the CLCN-IPNurease film; (B) λPBG values plotted against different concentrations of urease (Curease); insets show real photographs of CLCN-IPNurease circular films, with numbers indicating the urease concentration in µM; (C) Redshift of λPBG values as Curea increases; insets display photographs of CLCN-IPNurease films tested with corresponding urea concentrations; (D) Bar graph illustrating ΔλPBG as a function of Curea. Error bars in (B-D) represent the standard deviation from triplicate experiments. CLCN: Cholesteric liquid crystal network; IPN: interpenetrating polymer network.