“…[55] Here, the lessexplored reign of dielectric is nanoscale probing through the facile Kelvin probe force microscopy (KPFM). [55,56] Although, there are a large variety of samples and devices such as conducting polymer, metals, semiconductor devices, Langmuir-Blodgett films, nanoscale photovoltaic mapping, [57] solar cells, [58] memory devices, [59] electrical properties of the functional materials, [60] surface potential of biomolecules, [61] triboelectric nanogenerators, [62] direct determination of density of states, [63] and so on have been analyzed in recent past through KPFM, and established the corresponding contact potential analysis. [64,65] As well, KPFM, also has adequate strength for broad applications in investigating the charge dynamics in ferroelectric and dielectric systems.…”