Nanocharacterization and nanofabrication of a Nafion thin film in liquids by atomic force microscopy
Umemura, K; Wang, T; Hara, M; Kuroda, R; Uchida, O; Nagai, M
| HERO ID | 1053637 |
|---|---|
| In Press | No |
| Year | 2006 |
| Title | Nanocharacterization and nanofabrication of a Nafion thin film in liquids by atomic force microscopy |
| Authors | Umemura, K; Wang, T; Hara, M; Kuroda, R; Uchida, O; Nagai, M |
| Journal | Langmuir |
| Volume | 22 |
| Issue | 7 |
| Page Numbers | 3306-3312 |
| Abstract | 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. |
| Doi | 10.1021/la051926t |
| Pmid | 16548593 |
| Wosid | WOS:000236843300062 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Is Qa | No |