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Article Dans Une Revue European Physical Journal E: Soft matter and biological physics Année : 2009

Measuring colloidal forces with the magnetic chaining technique

Résumé

In 1994 Leal Calderon et al. (Phys. Rev. Lett. 72, 2959 (1994)) introduced the magnetic chaining technique to directly probe the force-distance profile between colloidal particles. In this paper, we revisit this approach in two ways. First, we describe a new experimental design which allows us to utilize sample volumes as low as a few microliters, involving femtomoles of surface active macromolecules. Secondly, we extensively describe the characterization and preparation of the magnetic colloids, and we give a quantitative evaluation of performance and resolution of the technique in terms of force and interparticle separation.

Dates et versions

hal-00400915 , version 1 (02-07-2009)

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Rémi Dreyfus, David Lacoste, Jérôme Bibette, Jean Baudry. Measuring colloidal forces with the magnetic chaining technique. European Physical Journal E: Soft matter and biological physics, 2009, 28, pp.113-123. ⟨10.1140/epje/i2008-10414-4⟩. ⟨hal-00400915⟩
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