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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.6b04377
|2 doi
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|a pubmed24n0895.xml
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|a (DE-627)NLM268579253
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|a (NLM)28151671
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Milionis, Athanasios
|e verfasserin
|4 aut
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| 245 |
1 |
0 |
|a Contactless Transport and Mixing of Liquids on Self-Sustained Sublimating Coatings
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| 264 |
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|c 2017
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 03.05.2018
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|a Date Revised 03.05.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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| 520 |
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|a Controlled handling of liquids and colloidal suspensions as they interact with surfaces, targeting a broad palette of related functionalities, is of great importance in science, technology, and nature. When small liquid volumes (drops on the order of microliters or nanoliters) need to be processed in microfluidic devices, contamination on the solid/liquid interface and loss of liquid due to adhesion on the transport channels are two very common problems that can significantly alter the process outcome, for example, the chemical reaction efficiency or the purity and the final concentration of a suspension. It is, therefore, no surprise that both levitation and minimal contact transport methods-including nonwetting surfaces-have been developed to minimize the interactions between liquids and surfaces. Here, we demonstrate contactless surface levitation and transport of liquid drops, realized by harnessing and sustaining the natural sublimation of a solid-carbon-dioxide-coated substrate to generate a continuous supporting vapor layer. The capability and limitations of this technique in handling liquids of extreme surface tension and kinematic viscosity values are investigated both experimentally and theoretically. The sublimating coating is capable of repelling many viscous and low-surface-tension liquids, colloidal suspensions, and non-Newtonian fluids as well, displaying outstanding omniphobic properties. Finally, we demonstrate how sublimation can be used for liquid transport, mixing, and drop coalescence, with a sublimating layer coated on an underlying substrate with prefabricated channels, conferring omniphobicity using a simple physical approach (i.e., phase change) rather than a chemical one. The independence of the surface levitation principle from material properties, such as electromagnetic, thermal or optical, surface energy, adhesion, or mechanical properties, renders this method attractive for a wide range of potential applications
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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| 700 |
1 |
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|a Antonini, Carlo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jung, Stefan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Nelson, Anders
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Schutzius, Thomas M
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Poulikakos, Dimos
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 33(2017), 8 vom: 28. Feb., Seite 1799-1809
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:33
|g year:2017
|g number:8
|g day:28
|g month:02
|g pages:1799-1809
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|u http://dx.doi.org/10.1021/acs.langmuir.6b04377
|3 Volltext
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