Photo-triggered wrinkling of glassy nematic films
A linear analysis is performed to explore the stability of an azobenzene-containing glassy nematic film on a soft elastic foundation under uniform illumination by UV light. It is found that the film can buckle to form wrinkles when the light intensity and the geometric and material parameters of the system are properly chosen. The results may help in the fabrication of photo-triggered wrinkled surfaces which are particularly attractive for applications where remote addressing is desired.
Abstract In the application of some polymers as track detectors, the attention should be paid to the fact that the track recording properties of these polymers are changed under the influence of certain parameters, such as the electromagnetic radiations and environmental conditions. In this work the etching effects of 60Co gamma irradiated CR-39 polycarbonate have been studied. For deeper study of the structural changes in CR-39, the FTIR and UV–visible spectra have been analyzed. The FTIR spectra shows considerable changes due to the gamma exposure. The contribution of degradation mechanism is discussed.