Am I understanding the abstract correctly: This research is basically using laser(s) in some manner to "trap" one or more dust particles (using something calle

Am I understanding the abstract correctly: This research is basically using laser(s) in some manner to "trap" one or more dust particles (using something called "a photophoretic trap created by spherical and astigmatic aberrations") and move them around (not sure how - maybe mirrors, or some kind of phased array?) quickly - scanning what seems to be multiple light sources (best guess - an RGB DLP or similar projector system)...? That's what I got from the abstract, anyhow - I could be completely wrong. It's neat, no matter how it's being done, though. EDIT: Just to clarify - they are using lasers to move a trapped "particle(s)" scanning a 3D volume with this particle, while selectively illuminating it using normal RGB light sources. The "particle" basically forms a physical "retroreflective point" for the light sources to bounce off of, forming a "virtual" screen.