Real-time and reversible light-actuated microfluidic channel squeezing in dye-doped PDMS

The azobenzene chromophore is used as a functional dye for the development of smart microfluidic devices. A single layer microfluidic channel is produced, exploiting the potential of a dye doped PDMS formulation. The key advantage of this approach is the possibility to control the fluid flow by mean...

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Bibliographic Details
Published in:Soft matter 2020-05, Vol.16 (18), p.4383-4388
Main Authors: Angelini, Angelo, Agero, Ubirajara, Ferrarese Lupi, Federico, Fretto, Matteo, Pirri, Fabrizio, Frascella, Francesca
Format: Article
Language:English
Subjects:
Actuation
Chromophores
Compressing
Computational fluid dynamics
Dyes
Fluid flow
Microfluidic devices
Microfluidics
Polydimethylsiloxane
Real time
Silicone resins
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Summary:The azobenzene chromophore is used as a functional dye for the development of smart microfluidic devices. A single layer microfluidic channel is produced, exploiting the potential of a dye doped PDMS formulation. The key advantage of this approach is the possibility to control the fluid flow by means of a simple light stimulus. Furthermore, the deformation can be controlled in time, space and intensity, giving rise to several degrees of freedom in the actuation of the channel squeezing. A future perspective will be the implementation of the microfluidic platform with structured light, to have the possibility to control the flow in a parallel and reversible manner at several points, modifying the pattern in real time. Reversible and real time light-triggered control of flows in a microfluidic azo doped device.
ISSN:1744-683X
1744-6848
DOI:10.1039/d0sm00217h