title: Photoinduced grating formation in azo-dye-labeled phospholipid thin films by 244-nm light.
abstract: Holographic gratings are recorded in azo-dye nitrobenzoxazole-labeled phospholipid thin films by use of 244-nm UV light. The gratings continue to grow for more than 1 h, even after the recording light is removed. The diffraction efficiency of these gratings shows extreme sensitivity to humidity and can increase reversibly by 2 orders of magnitude in air that is saturated with water vapor. This effect is related to the unique characteristics of phospholipid molecules that undergo hydration-dependent structural reorganization and self-assembly.
authors.affiliation: Department of Physics, Alabama A&M University, Normal, Alabama 35762, USA.
authors.forename: A
authors.initials: A
authors.lastname: Sharma
authors.forename: M
authors.initials: M
authors.lastname: Dokhanian
authors.forename: A
authors.initials: A
authors.lastname: Kassu
authors.forename: Atul N
authors.initials: AN
authors.lastname: Parekh