title: Use of the radiofrequency-intermodulation distortion technique to investigate intrinsic nonlinearity at the electrode-electrolyte interface.
abstract: We report on investigations of nonlinear radiofrequency responses of electrolytes with Na(+) and Cl(-) ions placed within gold electrodes of a capacitor. The sample was part of a frequency-adjustable inductance-capacitance-resistance (LCR) parallel resonant circuit, and measurements were carried out using the two frequencies intermodulation distortion technique. We employed double layer model to analyze the observed nonlinearities and their dependence on ionic concentration. Electrode-electrolyte interface polarization was found to be a predominant cause of this intrinsic nonlinearity and to be dependent on electrolytic ion concentration. We also measured and calculated coefficients of resistive and capacitive components of the observed nonlinearity.
authors.forename: Rohit
authors.initials: R
authors.lastname: Pande
authors.forename: Leiming
authors.initials: L
authors.lastname: Xie
authors.forename: Wanda
authors.initials: W
authors.lastname: Zagozdzon-Wosik
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Nesteruk
authors.forename: Jarek
authors.initials: J
authors.lastname: Wosik