| Issue |
EPL
Volume 97, Number 4, February 2012
|
|
|---|---|---|
| Article Number | 48007 | |
| Number of page(s) | 5 | |
| Section | Interdisciplinary Physics and Related Areas of Science and Technology | |
| DOI | https://doi.org/10.1209/0295-5075/97/48007 | |
| 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
Received:
2
December
2011
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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