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请教spin coating

欲用spin coating方法准备高分子薄膜，请问基底需要预先处理吗？如何可以得到比较均匀的薄膜呢？

基底一般是用镉酸处理先！除去表面吸附的一些杂质。!}p)uk9B%E#p&l:U
溶液浓度不能太大，转速恒定就可以得到均匀的了

[url=http://www.ece.gatech.edu/research/labs/vc/packaging/theory/spin_theory.html]:link [img]http://www.ece.gatech.edu/research/labs/vc/packaging/images/stepstheory/spin_theory.GIF[/img][/url]

The Basic Physical Processes that Control Spin Coating

[b][size=+1]The Spin Coating Process can be broken down into several key stages: fluid dispense, spin-up, stable fluid outflow, and finally evaporation dominated drying. [url=http://www.mse.arizona.edu/faculty/birnie/Coatings/KeyStages.htm][color=#0000ff]Click Here for Details[/color][/url][/size][/b]
|u3k0Ab+n [b][size=+1]Fluid Flow on a flat spinning substrate is one of the most important physical processes involved in spin coating. [url=http://www.mse.arizona.edu/faculty/birnie/Coatings/FluidFlo.htm][color=#0000ff]Click Here for Details[/color][/url][/size][/b]
+?5AWqQno [b][size=+1]Air Flow [i]above[/i] the spinning wafer is also very important since this exerts most control over the evaporation rate of solvent from the solution. [url=http://www.mse.arizona.edu/faculty/birnie/Coatings/AirFlow.htm][color=#0000ff]Click Here for Details[/color][/url][/size][/b]
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2]$LK(M[ [b][size=+1][color=#0000ff][url=http://www.mse.arizona.edu/faculty/birnie/start.htm]Dunbar P. Birnie, III[/url][/color][/size][/b]
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多谢nanoworker和nano:handshake :handshake \V IK
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正在研读。。。