Fluid Mixing for Low‐Power ‘Digital Microfluidics’ Using Electroactive Molecular Monolayers |
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| Authors: | Maria Serena Maglione Stefano Casalini Stamatis Georgakopoulos Marianna Barbalinardo Vitaliy Parkula Núria Crivillers Concepció Rovira Pierpaolo Greco Marta Mas‐Torrent |
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| Affiliation: | 1. Institut de Ciència de Materials de Barcelona (ICMAB‐CSIC) and CIBER‐BBN, Bellaterra, Spain;2. Istituto per lo Studio dei Materiali Nanostrutturati, Bologna, Italy;3. Scriba Nanotecnologie srl, Bologna, Italy |
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| Abstract: | A switchable electrode, which relies on an indium‐tin oxide conductive substrate coated with a self‐assembled monolayer terminated with an anthraquinone group (AQ), is reported as an electrowetting system. AQ electrochemical features confer the capability of yielding a significant modulation of surface wettability as high as 26° when its redox state is switched. Hence, an array of planar electrodes for droplets actuation is fabricated and integrated in a microfluidic device to perform mixing and dispensing on sub‐nanoliter scale. Vehiculation of cells across microfluidic compartments is made possible by taking full advantage of surface electrowetting in culture medium. |
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| Keywords: | electroactive molecule electrowetting microfluidics quinone self‐assembled monolayer |
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