αs	Sliding angle (°)
γ	Liquid surface tension (N m−1)
ηV	Retained average-voltage ratio (%)
θs	Static water contact angle (°)
ρ	Liquid density (kg m−3)
Aactive	Electroactive surface area (mm2)
Ares	Area covered by retained water (mm2)
CV	Coefficient of variation (%)
D	Droplet diameter (m)
ER, drop	Energy dissipated in the external load per droplet (J)
fres	Retained-water area fraction (%)
IR(t)	Instantaneous current in the external load (A)
PR(t)	Instantaneous power dissipated in the external load (W)
QR, drop	Charge transported through the external load per droplet (C)
RL	External load resistance (Ω)
sV	Sample standard deviation of peak voltage (V)
t	Time (s)
v	Droplet impact velocity (m s−1)
$V_{\mathrm{p}\mathrm{e}\mathrm{a}\mathrm{k}}^{-}$	Average peak voltage (V)
VR(t)	Voltage measured across the external load (V)
We	Weber number (dimensionless)
fg	Nominal Cassie air fraction (dimensionless)
fs	Nominal Cassie projected solid fraction (dimensionless)
θCB	Apparent contact angle of the composite Cassie–Baxter surface (°)
θref	Reference apparent contact angle of the process-matched FEP surface (°)