“…With some optimized parameters, which include the laser wavelength, laser fluence, and high vacuum, the amorphous diamond-like carbon (DLC) thin film is obtained [1][2][3][4][5][6][7]. This deposition arrangement is generally known as the on-axis, or the normal-plane pulsed laser deposition (n-PLD), which usually promise a relatively smooth and particulate-free thin film.…”