1919 Sci. Abstr. A. 22 275 (heading) Mechanical and osmotic actions of radiation on the media passed through. Theory of photophoresis.

1950 Engineering 14 Apr. 407/1 The generation of such heat would probably introduce difficulties due to thermal currents and photo-phoresis effects.

1972 Sci. Amer. Feb. 64/3 In the case of photophoresis single particles would be heated asymmetrically by the light and would as a result move through the surrounding medium.

2003 Physical Rev. E. 68 61205-1 This photophoretic force and velocity of the photophoresis are calculated by taking both the optical and kinetic characteristics of the gas molecules into account.

1924 Sci. Abstr. A. 27 397 The small dependence of the photophoretic force on pressure.

1976 Chem. Abstr. 23 Feb. 404/2 Est[imatio]n of the value and direction of photophoretic velocity was made.

1997 High Tech Separations News (Nexis) Jan. The types of external driving forces include sedimentation, electrical, thermal, crossflow, magnetic, dielectrical, concentration gradients, photophoretic, and shear.

1998 Bone Marrow Transplantation 22 621 (title) Extracorporeal photophoresis in chronic cutaneous graft-versus-host disease.

2003 Dermatol. Times (Nexis) 1 Mar. 8 IDI is one of the few dermatology centers in Italy able to treat patients by extracorporeal photophoresis.