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Communication Dans Un Congrès Année : 2008

Modeling of force-volume images in atomic force microscopy

Résumé

An AFM microscope affords the measurement of interatomic forces exerting between a probe associated to a cantilever and a biological or chemical sample. A force spectrum f(z) shows the force evolution as a function of the probe-sample distance z. A reproduction of this analysis in conjunction with the scan of the sample surface yields a force-volume image f(x,y,z). Today, the analysis of a force-volume image remains mainly descriptive. The signal processing challenges include the decomposition of a force spectrum into elementary patterns and the factorization of a force-volume image, in order to provide a precise characterization of each pixel (x,y) of the sample surface. In this communication, we introduce a mixture model for force-volume images and we discuss its validity by means of experimental data.
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Dates et versions

hal-00335199 , version 1 (28-10-2008)

Identifiants

  • HAL Id : hal-00335199 , version 1

Citer

Charles Soussen, Junbo Duan, David Brie, Fabien Gaboriaud. Modeling of force-volume images in atomic force microscopy. AFM Workshop. Biological interfaces: from the model membrane to microbial cells, Oct 2008, Nancy, France. ⟨hal-00335199⟩
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