Fluid Mixing for Low‐Power 'Digital Microfluidics' Using Electroactive Molecular Monolayers. Issue 10 (27th December 2017)

• Record Type: Journal Article
• Authors: Maglione, Maria Serena; Casalini, Stefano; Georgakopoulos, Stamatis; Barbalinardo, Marianna; Parkula, Vitaliy; Crivillers, Núria; Rovira, Concepció; Greco, Pierpaolo; Mas‐Torrent, Marta
• Is Part Of: Small. Volume 14:Issue 10(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-12-27
• Subjects: electroactive molecule -- electrowetting -- microfluidics -- quinone -- self‐assembled monolayer; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201703344
• Languages: English
• ISSNs: 1613-6810

Abstract

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. Abstract : An array of planar indium‐tin oxide electrodes for droplets actuation based on a self‐assembled monolayer terminated with a switchable electroactive anthraquinone group is fabricated. The electrodes are integrated in a microfluidic device to perform mixing and dispensing at sub‐nanoliter scale. Vehiculation of cells across microfluidic compartments is further demonstrated.