Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/14555

TitleLab-on-a-chip with β-poly(vinylidene fluoride) based acoustic microagitation
Author(s)Cardoso, Vanessa Fernandes
Catarino, Susana Oliveira
Nunes, J. Serrado
Rebouta, L.
Rocha, J. G.
Lanceros-Méndez, S.
Minas, Graça
KeywordsAcoustic microagitation
Indium tin oxide (ITO)
Lab-on-a-chip
β-poly(vinylidene fluoride) (β-PVDF)
beta-poly(vinylidene fluoride) (beta-PVDF)
Issue dateMay-2010
PublisherIEEE
JournalIeee Transactions on Biomedical Engineering
Abstract(s)This paper reports a fully integrated disposable labon- a-chip with acoustic microagitation based on a piezoelectric β-poly(vinylidene fluoride) (β-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 β-PVDF polymer deposited underneath them; and the detection die that contains the photodetectors, its readout electronics, and the piezoelectric actuation electronics, all fabricated in a CMOS microelectronic process. The microagitation technique improves mixing and shortens reaction time. Further, it generates heating, which also improves the reaction time of the fluids. In this paper, the efficiency of the microagitation system is evaluated as a function of the amplitude and the frequency of the signal actuation. The relative contribution of the generated heating is also discussed. The system is tested for the measurement of the uric acid concentration in urine.
TypeArticle
URIhttp://hdl.handle.net/1822/14555
DOI10.1109/TBME.2009.2035054
ISSN0018-9294
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:DEI - Artigos em revistas internacionais

Files in This Item:
File Description SizeFormat 
IEEE Trans Biom Eng v57 n5 2010.pdf
  Restricted access
Documento principal415,41 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID