Article (Scientific journals)
Enzyme sensor with Polydimethylsiloxane membrane and CMOS potentiostat for wide-range glucose measurements.
Mross, Stefan; Fuerst, Peter; Pierrat, Sebastien et al.
2015In IEEE Sensors Journal, 15 (12), p. 7096-7104
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Abstract :
[en] We report on an electrochemical measurement setup comprising a glucose sensor and a CMOS potentiostat with a two-layer membrane as the first steps toward the development of an integrated in-situ sensor system for bioreactors. The potentiostat has a chip size of 2.1 mm× 2.5 mm and a linear current range from −220 nA to 240 nA with a linearity of R2 = 0.9995. For wide range measurements of glucose concentrations in cell culture media, electrodes functionalized with the enzyme glucose oxidase were spin-coated with membranes made from polydimethylsiloxane (PDMS). A two-stage curing scheme of the PDMS was applied, and different membrane thicknesses and curing times were evaluated. With these membranes, glucose concentrations up to 500 mM were measured with a linear measurement range up to 200 mM. The sensors were successfully employed in the glucose monitoring of a culture of Saccharomyces cerevisiae to monitor the glucose consumption of the cells. For interference elimination, the cellulose acetate membranes were employed.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Mross, Stefan
Fuerst, Peter
Pierrat, Sebastien
Vogt, Holger
Kraft, Michael ;  Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes microélectroniques intégrés
Language :
English
Title :
Enzyme sensor with Polydimethylsiloxane membrane and CMOS potentiostat for wide-range glucose measurements.
Publication date :
2015
Journal title :
IEEE Sensors Journal
ISSN :
1530-437X
eISSN :
1558-1748
Publisher :
Institute of Electrical and Electronics Engineers, New York, United States - New York
Volume :
15
Issue :
12
Pages :
7096-7104
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 October 2015

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