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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1021/la904165w
|2 doi
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|a pubmed24n0647.xml
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|a eng
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|a Ramírez, Laura Mely
|e verfasserin
|4 aut
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| 245 |
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|a Controlled flats on spherical polymer colloids
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|c 2010
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 17.08.2010
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|a Date Revised 12.05.2010
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|a published: Print
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|a Citation Status MEDLINE
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|a Colloidal particles with heterogeneous surfaces offer rich possibilities for controlled self-assembly. We have developed a method for preparing micrometer-sized polystyrene spheres with circular flat spots of controlled radius and location. The flats are created by settling the particles onto a flat glass substrate and then raising the temperature above the glass-transition temperature of the polymer for a controlled time (t). The polymer particle spreads on the glass such that the radius of the flat grows with time. We present a scaling theory for the hydrodynamics of the flattening process, finding that the radius of the flat grows as t(1/3). The model is in good agreement with our experimental observations of the flat radius versus spreading time as well as with previous studies in the literature for sintering polymer spheres
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Colloids
|2 NLM
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|a Polystyrenes
|2 NLM
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|a Milner, Scott T
|e verfasserin
|4 aut
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|a Snyder, Charles E
|e verfasserin
|4 aut
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| 700 |
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|a Colby, Ralph H
|e verfasserin
|4 aut
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|a Velegol, Darrell
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 26(2010), 10 vom: 18. Mai, Seite 7644-9
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|x 1520-5827
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|g volume:26
|g year:2010
|g number:10
|g day:18
|g month:05
|g pages:7644-9
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