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Authors: Alicia Zörner 1 ; Susanne Oertel 1 ; Björn Schmitz 2 ; Nadine Lang 2 ; Michael P. M. Jank 1 and Lothar Frey 1

Affiliations: 1 Fraunhofer Institute for Integrated Systems and Device Technology IISB, Germany ; 2 Fraunhofer Institute for Integrated Circuits IIS, Germany

Keyword(s): Screen-printed, Biosensor, Sweat, Ammonium, Exercise, Ion-Selective Electrode, Wearable Device, Bluetooth, Selectivity, Wearable Healthcare.

Abstract: The characterization and system integration of a fully screen-printed electrolyte biosensor is described. The purpose of this sensor is to determine the state of fitness during sports activity by measuring the ammonium concentration in sweat. Focusing on the selectivity of the ammonium sensor against interfering sodium and potassium ions, the separate solution method (SSM) and the fixed interference method (FIM) are compared on the basis of a single sensing device. The latter is mainly supported by the excellent stability of the sensors. For both interfering ions, the FIM analysis shows a sufficient margin for the operation of the sensor in the desired application in wearable health and fitness monitoring from sweat. The selectivity coefficients are better than 0.01 for sodium and still better than 0.1 for potassium. SSM delivers higher selectivity in both cases, although the discrepancies in selectivity point towards further optimization potential in the sensor architecture or mater ials combination. (More)

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Paper citation in several formats:
Zörner, A.; Oertel, S.; Schmitz, B.; Lang, N.; Jank, M. and Frey, L. (2017). Determination of the Selectivity of Printed Wearable Sweat Sensors. In Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2017) - BIODEVICES; ISBN 978-989-758-216-5; ISSN 2184-4305, SciTePress, pages 81-87. DOI: 10.5220/0006296400810087

@conference{biodevices17,
author={Alicia Zörner. and Susanne Oertel. and Björn Schmitz. and Nadine Lang. and Michael P. M. Jank. and Lothar Frey.},
title={Determination of the Selectivity of Printed Wearable Sweat Sensors},
booktitle={Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2017) - BIODEVICES},
year={2017},
pages={81-87},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006296400810087},
isbn={978-989-758-216-5},
issn={2184-4305},
}

TY - CONF

JO - Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2017) - BIODEVICES
TI - Determination of the Selectivity of Printed Wearable Sweat Sensors
SN - 978-989-758-216-5
IS - 2184-4305
AU - Zörner, A.
AU - Oertel, S.
AU - Schmitz, B.
AU - Lang, N.
AU - Jank, M.
AU - Frey, L.
PY - 2017
SP - 81
EP - 87
DO - 10.5220/0006296400810087
PB - SciTePress

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