The phrase "at a fixed potential" is correct and usable in written English.
It can be used in contexts related to physics, engineering, or discussions about electrical systems where a specific voltage level is maintained.
Example: "The circuit operates efficiently when all components are connected at a fixed potential."
Alternatives: "at a constant voltage" or "at a stable potential".
Measurements were made at a fixed potential + 1.0 V in 40 mM phosphate buffer pH 7.4.
Electrochemical impedance spectroscopy (EIS) at a fixed potential was performed at variously treated GCEs.
Moreover, the nanohybrid exhibits remarkably long stability for over 45 h at a fixed potential of 0.6 V.
Initially, an acetate oxidizing biofilm was grown in the anode chamber in step-feeding operation mode, at a fixed potential of +0.397 V vs. Standard Hydrogen Electrode SHEE).
Considering that the open-circuit potential (OCP) varies from electrode to electrode, the photocurrent comparison at a fixed potential may misrepresent the actual differences between samples.
Then, the UME was used for an in vivo amperometric experiment at a fixed potential and electrochemical impedance spectroscopy to detect oxygen evolution of the single cell under various light intensities.
In pulsed amperometric detection, the analyte is oxidized and reduced at an electrode with a fixed potential and the current is measured.
GCD is performed at a constant current over a fixed potential range of 0.0 0.5 V.
Cyclic voltammetry tests have been conducted at different scan rates in a fixed potential range of 0 0.55 V (vs. Hg/HgO) (Fig. 4a).
This mechanism agrees with experimental observations and may explain: (i) why current oscillations emerge within a fixed potential region at the LCR, (ii) why the IR-drop along with appropriate hydrodynamic conditions are both required for the onset of oscillations and (iii) what is the role of hydrodynamic conditions and chemical composition of the layer formed at the LCR.
Meanwhile, the electrode also displays a sensitivity of 0.48 mA mmol−1 L cm−2 with R2 = 0.98 and the corresponding detection limit of 25 μmol L−1 (S/N = 3) for a fixed potential amperometry at −0.3 V versus an Ag/AgCl reference electrode.
