| IONIC SELF-ASSEMBLY AND HUMIDITY SENSITIVITY OF POLYELECTROLYTE MULTILAYERS |
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| 作者姓名： | 余海湖 |
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| 作者单位： | Fiber Optic |
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| 基金项目： | This research was financially supported by the China Scholarship Council and the Natural Science Foundation of Hubei Province (Project 2000J002). |
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| 摘 要： | Multilayer thin films of alternately adsorbed layers of polyelectrolytes PDDA and PS-119 were formed on bothplanar silica substrates and optical fibers through the ionic self-assembly technique. Intrinsic Fabry-Perot cavities werefabricated by stepwise assembling the polyelectrolytes onto the ends of optical fibers for the purposes of fiber optical deviceand sensor development. Ionically assembled polyelectrolyte multilayer thin films, in which there are hydrophilic side groupswith strong affinity towards water molecules, are a category of humidity-sensitive functional materials. The polyelectrolytemultilayer thin film Fabry-Perot cavity-type fiber optical humidity sensor can work over a wide range from about 0% RH toabout 100% RH with a response time less than 1s.
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| 收稿时间： | 2000-12-06 |
| 修稿时间： | 2001-02-01 |
IONIC SELF-ASSEMBLY AND HUMIDITY SENSITIVITY OF POLYELECTROLYTE MULTILAYERS* |
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| Hai-hu Yu,De-sheng Jiang.IONIC SELF-ASSEMBLY AND HUMIDITY SENSITIVITY OF POLYELECTROLYTE MULTILAYERS[J].Chinese Journal of Polymer Science,2002,0(1):1-7. |
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| Authors: | Hai-hu Yu De-sheng Jiang |
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| Institution: | Hai-hu Yu;De-sheng Jiang Fiber Optic Sensing Technology Center Wuhan University of Technology Wuhan 430070 China |
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| Abstract: | Multilayer thin films of alternately adsorbed layers of polyelectrolytes PDDA and PS-119 were formed on bothplanar silica substrates and optical fibers through the ionic self-assembly technique. Intrinsic Fabry-Perot cavities werefabricated by stepwise assembling the polyelectrolytes onto the ends of optical fibers for the purposes of fiber optical deviceand sensor development. Ionically assembled polyelectrolyte multilayer thin films, in which there are hydrophilic side groupswith strong affinity towards water molecules, are a category of humidity-sensitive functional materials. The polyelectrolytemultilayer thin film Fabry-Perot cavity-type fiber optical humidity sensor can work over a wide range from about 0% RH toabout 100% RH with a response time less than 1s. |
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| Keywords: | Ionic self-assembly Polyelectrolyte Multilayer thin film Humidity Fabry-Perot interferometer Fiber optical sensor |
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