%0 Journal Article
%T The theory and experiment of solute migration caused by excited state absorptions<br>
%A Jin Xiao
%A Wang Yu-Xiao
%A Shui Min
%A Li Chang-Wei
%A Yang Jun-Yi
%A Zhang Xue-Ru
%A Yang Kun
%A Song Ying-Lin
%A <br>
%J 中国物理 B
%D 2010
%I 
%X Nonsymmetrical transition from reverse-saturable absorption (RSA) to saturable absorption (SA) caused by excited state absorption induced mass transport of the CuPcTs dissolved in dimethyl sulfoxide is observed in an open aperture Z-scan experiment with a 21-ps laser pulse. The nonsymmetrical transition from RSA to SA is ascribed neither to saturation of excited state absorption nor to thermal induced mass transport, the so-called Soret effect. In our consideration, strong nonlinear absorption causes the rapid accumulation of the non-uniform kinetic energy of the solute molecules. The non-uniform kinetic field in turn causes the migration of the solute molecules. Additionally, an energy-gradient-induced mass transport theory is presented to interpret the experimental results, and the theoretical calculations are also taken to fit our experimental results.
%K solute migration
%K excited state absorption
%K energy-gradient<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=4818A28C616CB858E0188B340DA5367E&yid=140ECF96957D60B2&vid=2A8D03AD8076A2E3&iid=CA4FD0336C81A37A&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=16