Figure 4.

(a) Amperometric test results of five different HMCA/NF sensing electrodes conducted with the successive addition of 0.5 mM of glucose at 0.3 V. (b) Histogram with error bar shows repeatability results of different HMCA/NF electrodes. The error bar represents the standard deviation of the current response on the addition of 0.5 mM glucose. (c) Amperometric response of HMCA/NF electrode measured at room temperature for 1 month period at an interval of 5 days. (d) Long-term stability of HMCA/NF sensing electrode at room temperature.