Phase formation in colloidal systems with tunable interaction
2015 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1539-3755, E-ISSN 1550-2376, Vol. 92, no 1, 012303Article in journal (Refereed) Published
Self-assembly is one of the most fascinating phenomena in nature and is one key component in the formation of hierarchical structures. The formation of structures depends critically on the interaction between the different constituents, and therefore the link between these interactions and the resulting structure is fundamental for the understanding of materials. We have realized a two-dimensional system of colloidal particles with tunable magnetic dipole forces. The phase formation is studied by transmission optical microscopy and a phase diagram is constructed. We report a phase transition from hexagonal to random and square arrangements when the magnetic interaction between the individual particles is tuned from antiferromagnetic to ferrimagnetic.
Place, publisher, year, edition, pages
2015. Vol. 92, no 1, 012303
IdentifiersURN: urn:nbn:se:uu:diva-259093DOI: 10.1103/PhysRevE.92.012303ISI: 000357262700007OAI: oai:DiVA.org:uu-259093DiVA: diva2:843461
FunderSwedish Research Council, A0505501Carl Tryggers foundation , CT 13:513