This article has an erratum: [https://doi.org/10.1209/0295-5075/99/49904]
Volume 97, Number 4, February 2012
|Number of page(s)||5|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||20 February 2012|
Elastic fluctuations as observed in a confocal slice
Laboratoire PCT, UMR Gulliver CNRS-ESPCI 7083 - 10 rue Vauquelin, 75231 Paris Cedex 05, France, EU
Accepted: 19 January 2012
Recent confocal experiments on colloidal solids motivate a fuller study of the projection of three-dimensional fluctuations onto a two-dimensional confocal slice. We show that the effective theory of a projected crystal displays several exceptional features, such as non-standard exponents in the dispersion relations. We provide analytic expressions for the effective two-dimensional elastic properties which allow one to work back from sliced experimental observations to three-dimensional elastic constants.
PACS: 82.70.Dd – Colloids / 63.22.-m – Phonons or vibrational states in low-dimensional structures and nanoscale materials / 63.20.dd – Measurements
© EPLA, 2012
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