Figure 3
Electrochemical characterazations of the Pd/NPG wire biosensor. (a) The CV curves of the Pd/NPG wire biosensor at various scan rates (from (i) to (v): 70, 100, 120, 150 and 250 mV/s). (b) The calibration plot of the oxidation peak current of DA versus the square root of scan rate (70–250 mV/s). (c) The CV curves of Pd/NPG wire biosensor in the PBS containing 0 μM and 100 μΜ DA at the scan rate of 100 mV/s. (d) The CV curves of NPG wire biosensor and Pd/NPG wire biosensor in the PBS containing 100 μM DA at the scan rate of 100 mV/s.
