Shear modulus of two-dimensional colloidal crystals


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WILLE, Axel, Franck VALMONT, Klaus ZAHN, Georg MARET, 2002. Shear modulus of two-dimensional colloidal crystals. In: Europhysics Letters (EPL). 57(2), pp. 219-225. ISSN 0295-5075

@article{Wille2002Shear-17356, title={Shear modulus of two-dimensional colloidal crystals}, year={2002}, doi={10.1209/epl/i2002-00564-y}, number={2}, volume={57}, issn={0295-5075}, journal={Europhysics Letters (EPL)}, pages={219--225}, author={Wille, Axel and Valmont, Franck and Zahn, Klaus and Maret, Georg} }

<rdf:RDF xmlns:rdf="" xmlns:bibo="" xmlns:dc="" xmlns:dcterms="" xmlns:xsd="" > <rdf:Description rdf:about=""> <dc:creator>Wille, Axel</dc:creator> <bibo:uri rdf:resource=""/> <dc:language>eng</dc:language> <dc:creator>Zahn, Klaus</dc:creator> <dc:date rdf:datatype="">2012-02-02T11:13:11Z</dc:date> <dc:rights>deposit-license</dc:rights> <dcterms:title>Shear modulus of two-dimensional colloidal crystals</dcterms:title> <dcterms:bibliographicCitation>First publ. in: Europhysics Letters ; 57 (2002), 2. - pp. 219-225</dcterms:bibliographicCitation> <dcterms:rights rdf:resource=""/> <dc:contributor>Zahn, Klaus</dc:contributor> <dcterms:abstract xml:lang="eng">A new method for the determination of elastic constants of colloidal systems is described. We study super-paramagnetic microspheres confined by gravity to a two-dimensional layer at a water-air interface. Under an external vertical magnetic field the particles arrange in a crystalline triangular phase because of the repulsive dipole-dipole interaction. By use of an optical tweezer, one triangle formed by three spheres is rotated from its equilibrium position and the relaxation time measured using video-microscopy. We demonstrate that this time is directly related to the shear modulus μ of the crystal and study μ as a function of the magnetic particle interaction strength.</dcterms:abstract> <dcterms:issued>2002</dcterms:issued> <dc:contributor>Maret, Georg</dc:contributor> <dcterms:available rdf:datatype="">2012-02-02T11:13:11Z</dcterms:available> <dc:creator>Maret, Georg</dc:creator> <dc:contributor>Wille, Axel</dc:contributor> <dc:contributor>Valmont, Franck</dc:contributor> <dc:creator>Valmont, Franck</dc:creator> </rdf:Description> </rdf:RDF>

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