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arXiv · 0801.3917

Direct measurement of three-body interactions

M. Brunner·J. Dobnikar·H. H. von Grünberg·C. Bechinger
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Abstract

Three-body interactions have been measured among three charged colloidal particles in deionized solvent. Two of the particles have been confined to an optical line-trap while the third one was approached by means of a focused laser beam. The experimentally determined three-body interactions are attractive and roughly of the same magnitude and range as the pair-interactions. In addition, numerical calculations have been performed, which show good agreement with the experimental results.

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M. Brunner, J. Dobnikar, H. H. von Grünberg, C. Bechinger. 2008-01-25. Direct measurement of three-body interactions. https://doi.org/10.1103/physrevlett.92.078301

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