Flory-Huggins swelling of polymer Bragg mirrors.

Autor: Mönch, Wolfgang, Dehnert, Jan, Jaufmann, Ewald, Zappe, Hans
Předmět:
Zdroj: Applied Physics Letters; 10/16/2006, Vol. 89 Issue 16, p164104, 3p, 3 Graphs
Abstrakt: Bragg mirrors have been fabricated from cross-linked standard optical polymers (polystyrene and polymethylmethacrylate). In an ambient containing organic solvents, these polymer multilayers swell, causing the transmission peak wavelength to shift towards higher wavelengths. The transmission spectra of these Bragg mirrors as a function of the solvent partial pressure in the surrounding atmosphere have been measured for different organic solvents. From the spectral signatures, we show that the mirror swelling is well described by a Flory-Huggins-type sorption behavior. This result suggests that polymer swelling may be used as a robust tuning principle for optical Bragg structures. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index