%0 Journal Article
%T COLORATION EFFECT OF PULSED LASER ON WO3<br>
%A Zhao Yan
%A Feng Zhong-chao
%A Liang Yong
%A <br>
%J 中国物理 B
%D 1998
%I 
%X When laser pulses irradiate the surface of the sample WO3, an interesting coloration effect is obtained. Only by one pulse of XeCl laser irradiation (wavelength: 308 nm, pulse duration: 36 ns, output power: 100 mJ/pulse), a significant color change appears. X-ray photoelectron spectroscopy (XPS) shows that a partial reduction process of WO3 occurs and conduction band electrons appears. X-ray diffraction pattern indicates that the lattice parameters of the colored samples are increased. A molten layer can be seen in scanning electron microscopy (SEM) image. It may be concluded that the coloration effect of pulsed laser undergoes a process different from that of electro- or photo- chromism, and may be attributed to thermochromism and substoichiometric WO3 is formed. The coloration process is characterized by its high speed and stability.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=3C279E2EF4B26DDC48A322DCB7D7549E&yid=8CAA3A429E3EA654&vid=DF92D298D3FF1E6E&iid=5D311CA918CA9A03&sid=54E527C5B72E59D8&eid=6837BC93241057EF&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=0