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TitleBiological microdevice with fluidic acoustic streaming for measuring uric acid in human saliva
Author(s)Cardoso, V. F.
Catarino, Susana Oliveira
Martins, P.
Rebouta, L.
Lanceros-Méndez, S.
Minas, Graça
KeywordsFluidic acoustic streaming
Issue date2-Sep-2009
JournalConference proceedings: ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Abstract(s)The healthcare system requires new devices for a rapid monitoring of a patient in order to improve the diagnosis and treatment of various diseases. Accordingly, new biomedical devices are being developed. In this paper, a fully-integrated biological microdevice for uric acid analysis in human saliva is presented. It is based on optical spectrophotometric measurements and incorporates a mixture system based on acoustic streaming, that enhances the fluids reaction due to both heating and agitation generated by this effect. Acoustic streaming is provided by a piezoelectric β-PVDF film deposited underneath the microfluidic die of the device. Further, it incorporates the electronics for the detection, readout, data processing and signal actuation. Experimental results proved that acoustic streaming based on this piezoelectric polymer is advantageous and reduces in 55% the time required to obtain the analysis results.
TypeConference paper
Publisher version978-1-4244-3296-7/09
AccessRestricted access (UMinho)
Appears in Collections:DEI - Artigos em atas de congressos internacionais

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