Jahn, Sabrina and Geerts, Nienke and Eiser, Erika (2010) DNA-Mediated Two-Dimensional Colloidal Crystallization above Different Attractive Surfaces. Langmuir, 26 (22). pp. 16921-16927. ISSN 0743-7463 DOI https://doi.org/10.1021/la103192q
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Abstract
We explore the formation of “floating” two-dimensional colloidal crystals above weakly attractive surfaces that are either positively or negatively charged. In particular, we studied crystal formation above positively charged poly-l-lysine−poly(ethylene glycol) surfaces with and without short single-stranded DNA and above negatively charged bovine albumin serum−streptavidin multilayers. Confocal microscopy revealed the evolution of crystals several micrometers above all three surfaces. Interestingly, the “flying height” of crystals was found to depend on the surface coating. All crystalline structures remained remarkably stable over weeks, even under high salt conditions. Neither lifting the crystals nor lowering them by means of buoyancy forces destroyed them.
Item Type: | Article |
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Uncontrolled Keywords: | 2010AREP, IA61, BPI, |
Subjects: | 99 - Other |
Divisions: | 99 - Other |
Journal or Publication Title: | Langmuir |
Volume: | 26 |
Page Range: | pp. 16921-16927 |
Identification Number: | https://doi.org/10.1021/la103192q |
Depositing User: | Sarah Humbert |
Date Deposited: | 22 Dec 2010 16:14 |
Last Modified: | 23 Jul 2013 10:00 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/1976 |
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