Polar orientation induced by local photo-assisted poling in azo copolymer films

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题名:	Polar orientation induced by local photo-assisted poling in azo copolymer films
作者:	Chien, F.S.-S., Lin, C.Y., Huang, C.R., Chang, C.S., Hsu, C.C.
贡献者:	Department of Physics, Tunghai University
关键词:	Biexponential functions;Characteristic time;Copolymer films;Disperse red 1;Electrostatic force microscopy;Hole burning;Polar orientation
日期:	2010
上传时间:	2013-05-21T09:15:16Z (UTC)
摘要:	Polar orientation created by local photo-assisted poling (PAP) in copolymer films containing disperse red 1 was investigated by scanning probe microscopy. PAP was performed by a proximal biased probe, and the polar orientation was semiquantitatively measured by electrostatic force microscopy. The polar orientation behaves as a biexponential function of the period of PAP, which is dominated by fast angular hole burning and slow angular redistribution (AR). The characteristic time of AR decreases linearly with the poling bias. An expression has been developed to interpret the evolution of the Lorentzian-like shape of the poled spots. A poled spot with 150 nm FWHM was demonstrated. ? 2010 Optical Society of America.
關聯:	Journal of the Optical Society of America B: Optical Physics 27 (4) , pp. 773-778
显示于类别:	[應用物理學系所] 期刊論文

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