Figure 1 | Scientific Reports

Figure 1

From: Electrochemical noise and impedance of Au electrode/electrolyte interfaces enabling extracellular detection of glioma cell populations

Figure 1

Small-signal impedance of Au electrodes in 100 mM aqueous KCl solution.

The electrode area was varied between 2 mm2, 6.5 mm2 and 10.5 mm2. (a) Impedance as a function of frequency between 1 Hz and 1 MHz. The inset shows the corresponding phase angle. (b) Extracted equivalent parallel capacitance, Cp. (c) Extracted dielectric loss, Gp/ω. The peak in the dielectric loss corresponds to the Maxwell-Wagner relaxation frequency. The solid lines are fits derived by fitting the impedance using Eqs [3 and 4]. The equivalent circuit is presented in the inset of Fig. 2a.

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