The capacitive reactance, a measure of this opposition, is inversely proportional to the frequency f of the alternating current and to a property of the capacitor called capacitance (symbolized by C and depending on the capacitor's dimensions, arrangement, and insulating medium).
Impedance, the apparent resistance to an alternating current, and reactance, the part of impedance resulting from capacitance or inductance, are circuit characteristics that are measured in ohms.
Recently, a thin film (~100 nm) of CVD-grown edge-oriented MoS2 was employed as a supercapacitor electrode [40] and the as-fabricated supercapacitor exhibited dual functionality, i.e. it exhibits both bi-layer and faradaic capacitance, and can function even at alternating current frequencies of ~100 Hz.
Capacitance performance of the electrodes was discussed by constant charge/discharge and alternating current impedance tests.
If these elements are connected in series, the circuit presents low impedance to alternating current of the resonant frequency, which is determined by the values of the inductance and capacitance, and high impedance to current of other frequencies.
Variations in nanorod resistance and capacitance in response to the introduction of various concentrations of hydrogen gas were obtained from the alternating current impedance spectra.
High-frequency alternating current flows through ICW and ECW whereas low frequency current flows only through ECW because of the resistance due to the capacitance of cell membranes.
Alternating current (a.c).
Nikolo, M. Superconductivity: A guide to alternating current susceptibility measurements and alternating current susceptometer design.
Both direct current (DC) and alternating current (AC) were used.
The site of phosphene induction by transcranial alternating current stimulation.
