Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 15, Pages 12226-12234Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am501724h
Keywords
pH sensor; tungsten oxide nanoparticles; hydrothermal synthesis; electrodeposition; flexible; lightweight
Funding
- Portuguese Science Foundation (FCT-MEC) [EXCL/CTM-NAN/0201/2012, PEst-C/CTM/LA0025/2013-14]
- FCT-MCTES [SFRH/BD/73810/2010, SFRH/BD/76004/2011]
- ERC [228144]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/73810/2010, SFRH/BD/76004/2011] Funding Source: FCT
Ask authors/readers for more resources
pH is a vital physiological parameter that can be used for disease diagnosis and treatment as well as in monitoring other biological processes. Metal/metal oxide based pH sensors have several advantages regarding their reliability, miniaturization, and cost-effectiveness, which are critical characteristics for in vivo applications. In this work, WO3 nanoparticles were electrodeposited on flexible substrates over metal electrodes with a sensing area of 1 mm(2). These sensors show a sensitivity of -56.7 +/- 1.3 mV/pH, in a wide pH range of 9 to 5. A proof of concept is also demonstrated using a flexible reference electrode in solid electrolyte with a curved surface. A good balance between the performance parameters (sensitivity), the production costs, and simplicity of the sensors was accomplished, as required for wearable biomedical devices.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available