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X-ray microdiffraction on flow-controlled biomolecular assemblies

Evans, Heather M. and Dootz, Rolf and Köster, Sarah and Struth, Bernd and Pfohl, Thomas. (2007) X-ray microdiffraction on flow-controlled biomolecular assemblies. Bulletin of the Polish Academy of Sciences Technical Sciences, 55 (2). pp. 217-227.

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Official URL: http://edoc.unibas.ch/46502/

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Abstract

The study of liquid crystalline assemblies, with an emphasis on biological phenomena, is now accessible using newly developed microdevices integrated with X-ray analysis capability. Many biological systems can be described in terms of gradients, mixing, and confinement, all of which can be mimicked with the use of appropriate microfluidic designs. The use of hydrodynamic focusing creates well-defined mixing conditions that vary depending on parameters such as device geometry, and can be quantified with finite element modelling.We describe experiments in which geometry and strain rate induce finite changes in liquid crystalline orientation. We also demonstrate the online supramolecular assembly of lipoplexes. The measurement of lipoplex orientation as a function of flow velocity allows us to record a relaxation process of the lipoplexes, as evidenced by a remarkable 4-fold azimuthal symmetry. All of these processes are accessible due to the intentional integration of design elements in the microdevices.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Biophysikalische Chemie (Pfohl)
UniBasel Contributors:Pfohl, Thomas
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:De Gruyter Open
e-ISSN:2300-1917
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:19 Dec 2016 14:30
Deposited On:19 Dec 2016 14:24

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