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Detection of vapor-phase organophosphate threats using wearable conformable integrated epidermal and textile wireless biosensor systems.
- Source :
-
Biosensors & Bioelectronics . Mar2018, Vol. 101, p227-234. 8p. - Publication Year :
- 2018
-
Abstract
- Flexible epidermal tattoo and textile-based electrochemical biosensors have been developed for vapor-phase detection of organophosphorus (OP) nerve agents. These new wearable sensors, based on stretchable organophosphorus hydrolase (OPH) enzyme electrodes, are coupled with a fully integrated conformal flexible electronic interface that offers rapid and selective square-wave voltammetric detection of OP vapor threats and wireless data transmission to a mobile device. The epidermal tattoo and textile sensors display a good reproducibility (with RSD of 2.5% and 4.2%, respectively), along with good discrimination against potential interferences and linearity over the 90–300 mg/L range, with a sensitivity of 10.7 µA∙cm 3 ∙mg −1 (R 2 = 0.983) and detection limit of 12 mg/L in terms of OP air density. Stress-enduring inks, used for printing the electrode transducers, ensure resilience against mechanical deformations associated with textile and skin-based on-body sensing operations. Theoretical simulations are used to estimate the OP air density over the sensor surface. These fully integrated wearable wireless tattoo and textile-based nerve-agent vapor biosensor systems offer considerable promise for rapid warning regarding personal exposure to OP nerve-agent vapors in variety of decentralized security applications. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BIOSENSORS
*BIOSENSOR research
*VAPOR analysis
*HYDROLASES
*TEXTILES
Subjects
Details
- Language :
- English
- ISSN :
- 09565663
- Volume :
- 101
- Database :
- Academic Search Index
- Journal :
- Biosensors & Bioelectronics
- Publication Type :
- Academic Journal
- Accession number :
- 126210676
- Full Text :
- https://doi.org/10.1016/j.bios.2017.10.044