Prompt

Create an image of a mathematical diagram illustrating the Fowler-Nordheim equation, which describes the quantum tunneling of electrons in field electron emission. The diagram should feature a graph with curves representing the relationship between current density (J) and electric field (E), with labels and annotations highlighting the key variables and constants, such as work function (φ), and constants A and B. The style should be formal and technical, suitable for a scientific or academic context, with a color scheme that is clear and easy to read, such as a combination of black, white, and possibly shades of blue or gray. The equation itself, J = (A*E^2/φ) exp(-B*φ^{3/2}/E), should be prominently displayed, possibly in a LaTeX-style font. The overall composition should convey a sense of precision and analytical rigor.