Abstract
As mentioned above, capacitive charging cannot deliver enough current if current density exceeds certain limits. The potential difference between the active (working) and the counter electrodes (used to close the electrical circuit) must remain low enough so that (almost) no redox reactions occur, if only capacitive charge injection is to follow.
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Notes
- 1.
For details on this please refer to the corresponding application notes on www.gamry.com.
- 2.
In contrast to electrochemistry where pH = 0 at standard conditions, in biochemistry pH = 7 holds.
- 3.
One liter of phosphate buffered saline (PBS) contains 8 g NaCl, 0.2 g KCl, 1.44 g Na2HPO4, 0.24 g KH2PO4. HCl is used to adjust the pH to 7.4 [1].
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Aryan, N.P., Kaim, H., Rothermel, A. (2015). Irreversible and Reversible Redox Reactions: Water Window. In: Stimulation and Recording Electrodes for Neural Prostheses. SpringerBriefs in Electrical and Computer Engineering, vol 78. Springer, Cham. https://doi.org/10.1007/978-3-319-10052-4_2
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