Non-linear oscillation is a well-known subject but has not elucidated yet. The salt-water oscillation was discovered by Martin in 1970, [1] and Yoshikawa et al. observed it through ionic current. [2] In this study, we have discovered the different type of salt-water oscillation that only occurred at a suitable size, 50 nm, of the glass pipette.[3] The experimental setup was the same as reported previously [4] but without ion-selective film in the pipette. We found the 2.7 mHz oscillation when the inner diameter of the glass pipette was at 50 nm and no oscillation at 500 or 15 nm. The intensity of the oscillation depended on the salt concentration out of the pipette and was at maximum in case of 0.1 M.[1] Martin, S., Geophys. Fluid Dyn. 1970, 1 , 143.[2] Yoshikawa, K. et al., J. Chem. Edu. 1989, 66 , 205.[3] Deng, X. L. et al., J. Chem. Phys. C 2012, 116 , 14857.[4] Song, J. W. et al., Appl. Phys. Lett. 2011, 99 , 033701.

Non-linear ionic current oscillation in glass nanopipette

245th National Meeting (2013)

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