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Phase contrast in simultaneous topography and recognition imaging

AuthorsFuss, Martina ; Sahagún, Enrique; Köber, Mariana; Briones Fernández-Pola, Fernando ; Luna, Mónica ; Sáenz, J. J.
KeywordsAtomic Force Microscopy
Dynamic Force Microscopy
Molecular Recognition Imaging
Issue Date13-May-2009
CitationUltramicroscopy 109 (2009)
AbstractThe operation of a force microscope in Simultaneous Topography and Recognition Imaging (TREC) mode is analyzed by means of numerical simulations. Both topography and recognition signals are analyzed by using a worm-like chain force as the specific interaction between the functionalized tip probe and the sample. The special feedback mechanism in this mode is shown to couple the phase signal to the presence of molecular recognition interactions even in absence of dissipation.
Publisher version (URL)http://dx.doi.org/10.1016/j.ultramic.2009.05.009
Appears in Collections:(IMN-CNM) Artículos
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