| Complex Fluids. We investigate the rheological properties of Newtonian and non-Newtonian liquids within lithographically-defined microchannels. Taking into account the fluid character in the description of the microfluidic motion, we relate the penetration dynamics into capillaries with the liquid rheological properties. Microfluidics is a promising analytical approach for the investigation of the rheology of complex fluids within confined microenvironments. Read more |  |  | Flow Control. Controlling the solid-fluid interfacial properties and, consequently, precisely handling the fluid flow in microfabricated capillaries is an important issue for working with small (pL–nL) liquid volumes. Approaches for manipulating and transporting liquids within microfluidic networks include mechanical pumps and valves, optical, and chemical methods. We realize reversible fluidic switches with tuneable wettability, and different surface functionalizations of the involved surfaces in order to tailor wettability and to produce hydrophobic-hydrophilic contrast inside microchannels. We selectively adjust the physical parameters responsible for the filling rate in microfluidic lithography. Read more | | |  | Integrated Microfluidic Bench Technologies. The INFLUS project aims at developing innovative integrated microfluidic bench technologies: techniques, protocols and devices specifically designed for the investigation of the effects on the fluid motion of changes induced at the channel wall. Micro- and nanostructures or technological coatings are implemented in plastic, glass and hybrid micro-channels for obtaining flow control. The technical and scientific approach addresses both a complete experimental characterisation of functionalised interfaces by means of high-precision flow measurement and visualisation techniques based on miniaturised sensor technology and advanced theoretical models. Read more | | |  | Microfluidic Devices. The realization of highly-integrated multifunctional microfluidic chips (lab-on-chips or micro-total analysis systems) requires a dedicated technological effort in order to fabricate all the functional components and to connect the device with external elements for fluid manipulation. We focus on elastomers and thermoplastics for fabrication. Read more | | |
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