| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2017-10-06 |
| タイトル |
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|
タイトル |
Quantitative potential measurements of nanoparticles with different surface charges in liquid by open-loop electric potential microscopy |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| ID登録 |
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ID登録 |
10.24517/00039991 |
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ID登録タイプ |
JaLC |
| 著者 |
Kobayashi, Naritaka
Asakawa, Hitoshi
Fukuma, Takeshi
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| 著者別表示 |
小林, 成貴
淺川, 雅
福間, 剛士
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| 提供者所属 |
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内容記述タイプ |
Other |
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内容記述 |
金沢大学ナノマテリアル研究所 |
| 書誌情報 |
Journal of Applied Physics
巻 110,
号 4,
p. 44315,
発行日 2011-08-15
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| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0021-8979 |
| NCID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA00693547 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.1063/1.3625230 |
| 出版者 |
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出版者 |
American Institute of Physics (AIP) |
| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Local potential distribution plays important roles in physical, chemical and biological processes at a solid/liquid interface. However, the measurement of a local potential distribution in liquid has been a long-standing challenge, which has hindered understanding of the mechanisms for the various interfacial phenomena. Recently, we have developed a method to overcome this problem [Kobayashi, Rev. Sci. Instrum. 81, 123705 (2010)], which is referred to as open-loop electric potential microscopy (OL-EPM). Here, we present its first application to quantitative measurements of local potential distribution in liquid. In OL-EPM, an ac bias voltage is applied between a tip and sample and the first and second harmonic cantilever oscillations induced by the electrostatic force are detected and used for the calculation of a potential value. In the equation for the potential calculation, here we introduce a correction factor to cancel out the error caused by the difference in the deflection sensitivity to the first and second harmonic electrostatic forces. With the improved method, we have performed potential measurements of two types of latex beads with different surface charges. The measured potential difference between the different types of latex beads approximately corresponds to their zeta potential difference, which demonstrates the quantitative capability of OL-EPM. © 2011 American Institute of Physics. |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
FR-PR-KOBAYASHI-N-44315.pdf (253.6 kB)
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