Atomic Force Microscopy in Viscous Ionic Liquids
Extracting quantitative information from amplitude-modulation atomic force microscopy (AM-AFM) in viscous ionic liquids is difficult because existing theory requires knowledge of the cantilever natural frequency, which cannot be measured in the absence of a resonance peak. We present a new model tha...
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| Veröffentlicht in: | Langmuir 2012-03, Vol.28 (12), p.5319-5322 |
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| container_title | Langmuir |
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| creator | Labuda, Aleksander Grütter, Peter |
| description | Extracting quantitative information from amplitude-modulation atomic force microscopy (AM-AFM) in viscous ionic liquids is difficult because existing theory requires knowledge of the cantilever natural frequency, which cannot be measured in the absence of a resonance peak. We present a new model that describes cantilever dynamics in an overdamped medium (Q < 0.5) and derive the theory necessary to extract the stiffness and damping in highly viscous liquids. The proposed methodology is used to measure the solvation layers of an ionic liquid at a gold electrode. |
| doi_str_mv | 10.1021/la300557u |
| format | Article |
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| ispartof | Langmuir, 2012-03, Vol.28 (12), p.5319-5322 |
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| language | eng |
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| subjects | Chemistry Exact sciences and technology General and physical chemistry |
| title | Atomic Force Microscopy in Viscous Ionic Liquids |
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