Figure 3
From: Active Brownian motion of strongly coupled charged grains driven by laser radiation in plasma

Kinetic energy Ekin of uncoated melamine–formaldehyde (rhombus) and copper-coated melamine–formaldehyde (circles) grains vs the power Plas of external laser radiation. The diameter of all grains is 9.95 μm, the pressure of buffer gas (argon) is 3 Pa, and the power of discharge is 13 W.