Analytical Expressions for Steady-State Concentrations of Substrate and Oxidized and Reduced Mediator in an Amperometric Biosensor

Figure 5

Variation of normalized current 𝐼 with (a) normalized surface concentration of oxidized mediator 𝐵_O and (b) normalized surface concentration of the substrate 𝐵_S for various values of Thiele modulus 𝜙²_O using (18). (i) 𝜙²_O=50 (𝑑=55.71 μM) (ii) 𝜙²_O=100 (𝑑=78.80 μM) (iii) 𝜙²_O=200 (𝑑=111.42 μM) (iv) 𝜙²_O=300 (𝑑=136.46 μM) (v) 𝜙²_O=400 (𝑑=158.00 μM).

(a)

(b)