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Cited by 875

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Tapping mode atomic force microscopy in liquids

Hansma, P. K., Cleveland, J. P., Radmacher, M., Walters, D. A., Hillner, P. E., Bezanilla, M., Fritz, M., Vie, D., Hansma, H. G., Prater, C. B., Massie, J., Fukunaga, L., Gurley, J., Elings, V.·1994·Applied Physics Letters

Abstract

Tapping mode atomic force microscopy in liquids gives a substantial improvement in imaging quality and stability over standard contact mode. In tapping mode the probe-sample separation is modulated as the probe scans over the sample. This modulation causes the probe to tap on the surface only at the extreme of each modulation cycle and therefore minimizes frictional forces that are present when the probe is constantly in contact with the surface. This imaging mode increases resolution and reduces sample damage on soft samples. For our initial experiments we used a tapping frequency of 17 kHz to image deoxyribonucleic acid plasmids on mica in water. When we imaged the same sample region with the same cantilever, the plasmids appeared 18 nm wide in contact mode and 5 nm in tapping mode.

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Metadata

Authors
Hansma, P. K., Cleveland, J. P., Radmacher, M., Walters, D. A., Hillner, P. E., Bezanilla, M., Fritz, M., Vie, D., Hansma, H. G., Prater, C. B., Massie, J., Fukunaga, L., Gurley, J., & Elings, V.
Venue
Applied Physics Letters
Published
1994-03-28
Volume
64
Issue
13
Pages
1738-1740
ISSN
  • 0003-6951 (ISSN-L)
  • 1077-3118
OpenAlex
W2568203515
Cited by
875
References
1
FWCI
20.75
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Tapping mode atomic force microscopy in liquids. https://app.cochat.ai/papers/10.1063/1.111795
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Hansma, P. K., Cleveland, J. P., Radmacher, M., Walters, D. A., Hillner, P. E., Bezanilla, M., Fritz, M., Vie, D., Hansma, H. G., Prater, C. B., Massie, J., Fukunaga, L., Gurley, J., & Elings, V. (1994). Tapping mode atomic force microscopy in liquids. Applied Physics Letters. https://doi.org/10.1063/1.111795

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