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タイトル: | Visualization of Au Nanoparticles Buried in a Polymer Matrix by Scanning Thermal Noise Microscopy |
著者: | Yao, Atsushi Kobayashi, Kei https://orcid.org/0000-0002-1409-6539 (unconfirmed) Nosaka, Shunta Kimura, Kuniko Yamada, Hirofumi |
著者名の別形: | 八尾, 惇 小林, 圭 山田, 啓文 |
発行日: | 17-Feb-2017 |
出版者: | Springer Nature |
誌名: | Scientific Reports |
巻: | 7 |
論文番号: | 42718 |
抄録: | Several researchers have recently demonstrated visualization of subsurface features with a nanometer-scale resolution using various imaging schemes based on atomic force microscopy. Since all these subsurface imaging techniques require excitation of the oscillation of the cantilever and/or sample surface, it has been difficult to identify a key imaging mechanism. Here we demonstrate visualization of Au nanoparticles buried 300 nm into a polymer matrix by measurement of the thermal noise spectrum of a microcantilever with a tip in contact to the polymer surface. We show that the subsurface Au nanoparticles are detected as the variation in the contact stiffness and damping reflecting the viscoelastic properties of the polymer surface. The variation in the contact stiffness well agrees with the effective stiffness of a simple one-dimensional model, which is consistent with the fact that the maximum depth range of the technique is far beyond the extent of the contact stress field. |
記述: | 熱雑音を測ることでポリマーに埋もれたナノ構造を検出 : 走査型熱振動顕微鏡法によるナノスケール表面下構造イメージング. 京都大学プレスリリース. 2017-02-20. |
著作権等: | © The Author(s) 2017. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
URI: | http://hdl.handle.net/2433/218310 |
DOI(出版社版): | 10.1038/srep42718 |
PubMed ID: | 28210001 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2017-02-20 |
出現コレクション: | 学術雑誌掲載論文等 |
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