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Applied Physics Letters / Volume 81 / Issue 14 / NANOSCALE SCIENCE AND DESIGN

Appl. Phys. Lett. 81, 2620 (2002); http://dx.doi.org/10.1063/1.1509856 (3 pages)

Scanning force microscopy jumping and tapping modes in liquids

F. Moreno-Herrero1, P. J. de Pablo1, R. Fernández-Sánchez2, J. Colchero1, J. Gómez-Herrero1, and A. M. Baró1

1Laboratorio de Nuevas Microscopías, Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid, Spain
2Nanotec Electrónica SL, Parque Científico de Madrid, Campus de Cantoblanco, E-28049 Madrid, Spain

(Received 14 June 2002; accepted 1 August 2002)

In this work theoretical considerations of the performance of scanning force microscopy jumping mode and tapping mode in liquids are discussed. A priori, jumping mode should improve in a liquid environment compared to in air while the situation for tapping mode should become worse. In order to confirm this we present jumping and tapping mode images of DNA molecules absorbed on a mica substrate immersed in water. The experiments demonstrate that jumping mode is a suitable scanning force microscopy method by which to image soft samples in liquid and that it has similar or even better performance than those exhibited by tapping, but without the complex experimental requirements of this mode. © 2002 American Institute of Physics.

© 2002 American Institute of Physics

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KEYWORDS and PACS

Keywords

atomic force microscopy, adsorbed layers, DNA, molecular biophysics, mica

PACS

  • 07.79.Lh

    Atomic force microscopes

  • 87.64.Dz

    Scanning tunneling and atomic force microscopy

  • 68.43.Fg

    Adsorbate structure (binding sites, geometry)

  • 87.14.G-

    Nucleic acids

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.1509856

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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