Capped colloids as light-mills in optical traps


Dateien zu dieser Ressource

Prüfsumme: MD5:d15dc9d2a2f428c01d1c7e6e9b54768d

MERKT, Florian, Artur ERBE, Paul LEIDERER, 2006. Capped colloids as light-mills in optical traps. In: New Journal of Physics. 8(216). Available under: doi: 10.1088/1367-2630/8/9/216

@article{Merkt2006Cappe-8940, title={Capped colloids as light-mills in optical traps}, year={2006}, doi={10.1088/1367-2630/8/9/216}, number={216}, volume={8}, journal={New Journal of Physics}, author={Merkt, Florian and Erbe, Artur and Leiderer, Paul} }

<rdf:RDF xmlns:dcterms="" xmlns:dc="" xmlns:rdf="" xmlns:bibo="" xmlns:dspace="" xmlns:foaf="" xmlns:void="" xmlns:xsd="" > <rdf:Description rdf:about=""> <dcterms:abstract xml:lang="eng">Custom-designed colloidal particles in optical tweezers act as lightmills in a fluid. In particular, aqueous suspensions of capped silica colloids, in which half of the surface is covered with metal layers, are investigated. Due to their asymmetry, the capped colloids can act as rotators when exposed to intense laser fields. Particles of 4.7μm in diameter are observed rotating around the focus of a laser beam. For low intensities, particles become trapped close to the spot of highest laser intensity. Above a threshold value of about 4mW in total beam intensity, the particles move away from the centre of the focus and start to rotate at frequencies of about 1 Hz. The balance of forces due to light pressure and hydrodynamic forces gives a constant rotation rate. The speed of the spinning particle increases linearly with laser power to above 2 Hz until the particles are ejected from the focus for intensities higher than 7mW. Magnetic caps introduce further possibilities to tune the rotation rates.</dcterms:abstract> <bibo:uri rdf:resource=""/> <dcterms:hasPart rdf:resource=""/> <dc:creator>Leiderer, Paul</dc:creator> <dc:contributor>Merkt, Florian</dc:contributor> <dcterms:bibliographicCitation>First publ. in: New Journal of Physics 8 (2006), 216</dcterms:bibliographicCitation> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dcterms:title>Capped colloids as light-mills in optical traps</dcterms:title> <dc:date rdf:datatype="">2011-03-24T17:52:15Z</dc:date> <dc:creator>Erbe, Artur</dc:creator> <dcterms:issued>2006</dcterms:issued> <dc:creator>Merkt, Florian</dc:creator> <dc:rights>terms-of-use</dc:rights> <dspace:hasBitstream rdf:resource=""/> <dcterms:available rdf:datatype="">2011-03-24T17:52:15Z</dcterms:available> <dspace:isPartOfCollection rdf:resource=""/> <dcterms:rights rdf:resource=""/> <dc:format>application/pdf</dc:format> <dc:language>eng</dc:language> <dcterms:isPartOf rdf:resource=""/> <dc:contributor>Erbe, Artur</dc:contributor> <dc:contributor>Leiderer, Paul</dc:contributor> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> </rdf:Description> </rdf:RDF>

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

Capped_colloids_as_light_mills_in_optical_traps.pdf 67

Das Dokument erscheint in:

terms-of-use Solange nicht anders angezeigt, wird die Lizenz wie folgt beschrieben: terms-of-use

KOPS Suche


Mein Benutzerkonto