Fig. 1: Mechanism of the surface charge visualization and standardized quantification method.
From: Visualization and standardized quantification of surface charge density for triboelectric materials
a The correlation between surface potential and surface charge density for TENG. The contact-separation process of TENG generates triboelectric surface charge, which in turn creates a surface potential that impacts the electrostatic induction performance. b Schematic diagram of surface potential scanning platform. The waveform image originates from the data screenshot in the oscilloscope. c Schematic diagram of surface potential scanning trajectory. d Schematic illustration of the surface charge visualization and standardized quantification method. e Case 1 (Area range: 30 mm × 30 mm). (i) The artificially set “spotted-like” charges and the induced surface potential distribution. (ii) The obtained surface charge distribution under different Gaussian noise conditions by the VSQ method. (iii) The surface charge distribution under different Gaussian noises by the CS method. f Case 2 (Area range: 30 mm × 30 mm), (i) The artificially set “TENG” letter-like charges and the induced surface potential distribution. (ii) The obtained surface charge distribution under different Gaussian noise conditions by the VSQ method.
