photophoresis

https://doi.org/10.1351/goldbook.P04645
In @A00176@ physics, the motion of particles due to the influence of light. In many cases, this amounts to a special form of thermophoresis due to the heating of the particles by the light.
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2206 [Terms] [Paper]