Nobody explains how it properly works. Even the article author does not understand it.

Experiment is in a low pressure cabin.

Laser is shot on a graphine siliciumoxid strip from on side, but the strip moves towards the laser, which is counterintuitive, as the heatup of the lasered area should push it away from the light source. So why does it move towards the light source? They explain that the air pressure behind on the other side of strip opposite to the lasered area increases in air pressure relative to the frontal face that gets lasered, and thus pushes the object towards the light source. But that would mean that the heatup of the lasered area leads to lower air pressure directly in front of it which is counterintuitive.