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This article presents the electric control and actuation system of several piezoelectric transducers placed underneath microfluidic channels and reaction chambers of lab-on-a-chip devices for pumping, mixing and heating fluids. The final goal of this lab-on-a-chip device will be the analysis of (bio)chemical markers in biological fluids, without a complex and bulky pumping system. The transducers...
The research team is focused on lab-on-a-chip devices for clinical applications, where acoustic streaming technique is used for promoting the mixing, pumping and chemical reactions of fluids, inside the microfluidic structures. In particular, this paper focuses the modeling and simulation of the acoustic streaming generated by a piezoelectric polymer — the β-PVDF in a microchannel. The simulations...
The research team is focused on lab-on-a-chip devices for clinical applications, with on-chip integration of electronic circuits, optical filters and (bio)sensors. An example of the work is a lab-on-a-chip where acoustic streaming technique is used to promote the mixing and the pumping of the fluids inside microchannels. The transducer that generates the acoustic streaming is based on a piezoelectric...
This article describes an acoustic microagitator for being used in biological fluids analysis. It is known that a piezoelectric transducer, with its vibration, can be used for mixing fluids. However, in this case, the piezoelectric transducer is also used to heat the samples, improving the reaction of fluids that benefit from that effect. The piezoelectric transducer is fabricated from a poly(vinylidene...
This paper reports a fully integrated disposable lab-on-a-chip with acoustic microagitation based on a piezoelectric ??-poly(vinylidene fluoride) (??-PVDF) polymer. The device can be used for the measurement, by optical absorption spectroscopy, of biochemical parameters in physiological fluids. It comprises two dies: the fluidic die that contains the reaction chambers fabricated in SU-8 and the ??-PVDF...
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