Photonic properties of strongly correlated colloidal liquids
- Rojas-Ochoa, Luis Fernando Soft Condensed Matter Group, Physics Department, University of Fribourg, Switzerland
- Mendez-Alcaraz, J. M. Departamento de Física, CINVESTAV-IPN, Colonia San Pedro Zacatenco, México City, México
- Sáenz, J. J. Departamento de Física de la Materia Condensada, and Instituto "Nicolás Cabrera," Universidad Autónoma de Madrid, Spain
- Schurtenberger, Peter Soft Condensed Matter Group, Physics Department, University of Fribourg, Switzerland
- Scheffold, Frank Soft Condensed Matter Group, Physics Department, University of Fribourg, Switzerland
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13.08.2004
Published in:
- Physical Review Letters. - 2004, vol. 93, no. 7, p. 073903
English
The optical and structural properties of dense colloidal suspensions in the presence of long-range electrostatic repulsion are determined from both light and small-angle neutron scattering experiments. Short-range structural order induces an enhancement of the scattering strength while at the same time the total transmission shows strong wavelength dependence, reminiscent of a photonic crystal. Interestingly, the interplay between diffusive scattering and local order leads to negative values of the scattering anisotropy parameter. The tunable optical properties of these liquids furthermore suggest potential applications such as transparency switches or filters.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 4203
- DOI 10.1103/PhysRevLett.93.073903
- Persistent URL
- https://folia.unifr.ch/unifr/documents/299684
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