Nanocharacterization and nanofabrication of a Nafion thin film in liquids by atomic force microscopy.
Nanocharacterization and nanofabrication of a Nafion thin film in liquids by atomic force microscopy.
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DOI：
10.1021/la051926t
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发表时间：
2006-03
期刊：
影响因子：
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通讯作者：
K. Umemura;Tong Wang;M. Hara;R. Kuroda;O. Uchida;M. Nagai
中科院分区：
文献类型：
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作者：
K. Umemura;Tong Wang;M. Hara;R. Kuroda;O. Uchida;M. Nagai
我们展示了纳米表征和nanofableton薄膜使用原子力显微镜（AFM）。AFM图像显示，Nafion分子在水中形成纳米团簇，在5%的甲醇中，在乙酸中。的Nafion膜的杨氏模量E估计在水和5%的甲醇在一个样品表面上的顺序力曲线测量。E水/E 5%甲醇为1.75 +/-0.40，因此膜在5%甲醇中比在水中软得多。即使将溶剂从5%甲醇替换为水，杨氏模量也不能很快恢复。我们展示了纳米级Nafion薄膜机械性能的第一个例子。此外，我们成功地制造三维纳米结构的Nafion表面上的AFM纳米光刻在液体中。我们的研究结果显示了新的潜力的AFM纳米光刻的聚合物薄膜软化的分子在液体中。
We demonstrated the nanocharacterization and nanofabrication of a Nafion thin film using atomic force microscopy (AFM). AFM images showed that the Nafion molecules form nanoclusters in water, in 5% methanol, and in acetic acid. Young's modulus E of a Nafion film was estimated by sequential force curve measurements in water and in 5% methanol on one sample surface. Ewater/E5% methanol was 1.75 +/- 0.40, so the film was much softer in 5% methanol than in water. Even when solvent was replaced from 5% methanol to water, Young's modulus was not recovered soon. We showed the first example of the mechanical properties of a Nafion film on the nanoscale. Furthermore, we succeeded in fabricating 3D nanostructures on a Nafion surface by AFM nanolithography in liquids. Our results showed the new potential of the AFM nanolithography of a polymer film by softening the molecules in liquids.