Thermal conductivity associated with a bead-bead contact decorated by a liquid bridge

J.-C. Géminard (), D. Bouraya and H. Gayvallet

The European Physical Journal B: Condensed Matter and Complex Systems, 2005, vol. 48, issue 4, 509-517

Abstract: We report an experimental study of the heat transport along a chain of macroscopic beads: at one end, one bead is periodically heated and we record the resulting temperature variations of another bead as a function of position and time. The experimental results show that the chain behaves like a high-order low-pass filter. The measurement of the associated cut-off frequency makes it possible to determine accurately the resistance of the bead-bead contact: we make use of the experimental setup for studying the effects of liquid bridges decorating the bead-bead contacts, which provides important clues for understanding the thermal properties of partially wet granular matter. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Date: 2005
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DOI: 10.1140/epjb/e2006-00004-6

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