Lysozyme Pattern Formation in Evaporating Drops

Liquid droplets containing suspended particles deposited on a solid, flat surface generally form ringlike structures due to the redistribution of solute during evaporation (the “coffee ring effect”). The forms of the deposited patterns depend on interactions between solute(s), solvent, and substrate...

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Bibliographic Details
Published in:Langmuir 2012-03, Vol.28 (9), p.4039-4042
Main Authors: Gorr, Heather Meloy, Zueger, Joshua M, Barnard, John A
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Microscopy
Muramidase - chemistry
Particle Size
Solutions - chemistry
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Summary:Liquid droplets containing suspended particles deposited on a solid, flat surface generally form ringlike structures due to the redistribution of solute during evaporation (the “coffee ring effect”). The forms of the deposited patterns depend on interactions between solute(s), solvent, and substrate. In this study, deposition patterns from droplets of a simplified model biological fluid (DI water + lysozyme) are examined by scanning probe and optical microscopy. The overall lysozyme residue morphology is complex (with both a perimeter “rim” and undulating interior) but varies little with concentration. However, the final packing of lysozyme molecules is strongly dependent on initial concentration.
ISSN:0743-7463
1520-5827
DOI:10.1021/la300125y