The mechanisms of photoinduced microstructures in an azobenzene polymer film are presented.They are based on the spatial periodic modulation of optical intensity and the photoisomerization of azobenzene molecules with...The mechanisms of photoinduced microstructures in an azobenzene polymer film are presented.They are based on the spatial periodic modulation of optical intensity and the photoisomerization of azobenzene molecules with the movement of main chains.Experiment and theory jointly point out the possibility of photoinducing desired spatial microstructures in azobenzene organic polymer via adequate optical lattices and adequately polarized‘writing’beams.展开更多
Pattern formation in azobenzene polymer film by degenerate four-wave mixing is reported.Island arrays with specific patterns are analyzed with scanning electron microscopy and polarizing optical microscopy.It is demon...Pattern formation in azobenzene polymer film by degenerate four-wave mixing is reported.Island arrays with specific patterns are analyzed with scanning electron microscopy and polarizing optical microscopy.It is demonstrated that the control of photo-induced nanostructure sized micropattern in the nonlinear organic film is possible by using properly polarized writing beams with the total incident power exceeding a certain threshold.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.19604015Natural Science Foundation of Guangdong Province under Grant No.980279.
文摘The mechanisms of photoinduced microstructures in an azobenzene polymer film are presented.They are based on the spatial periodic modulation of optical intensity and the photoisomerization of azobenzene molecules with the movement of main chains.Experiment and theory jointly point out the possibility of photoinducing desired spatial microstructures in azobenzene organic polymer via adequate optical lattices and adequately polarized‘writing’beams.
基金Supported by the National Natural Science Foundation of China under Grant No.19604015.
文摘Pattern formation in azobenzene polymer film by degenerate four-wave mixing is reported.Island arrays with specific patterns are analyzed with scanning electron microscopy and polarizing optical microscopy.It is demonstrated that the control of photo-induced nanostructure sized micropattern in the nonlinear organic film is possible by using properly polarized writing beams with the total incident power exceeding a certain threshold.