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Authors
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Hensel, R. ; Braun, H.-G.
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Title
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Free-floating hydrogel-based rafts supporting a microarray of functional entities at fluid interfaces
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Date
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30.03.2012
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Number
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32363
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Abstract
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In the present paper, we report a method for fabricating a macroscopic, free-floating device that supports a microarray of molecular functional entities. Therefore, the fabrication process developed by us combines bottom-up and top-down microfabrication strategies for a spatially controllable integration of molecular entities into the macroscopic device. For application, the generated device is transferred to fluid interfaces. Through a combined experimental and theoretical study, we demonstrate that the microscopic cavities of the intrinsically hydrophilic comb-shaped mesh structure enable the flotation of the device at a waterair interface of a sessile droplet due to surface tension effects. The design of the functionalized and free-floating device affords a long-term stable approach with respect to a chemical patterning of this fluid interface without loss of the lateral arrangement of the functional entities over time.
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Publisher
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Soft Matter
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Wikidata
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Citation
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Soft Matter 8 (2012) 5293-5300
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DOI
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https://doi.org/10.1039/C2SM07485K
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Tags
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