Type

Conference Proceedings

Authors

Dermot Diamond
Shirley Coyle
Larisa Florea
Jennifer Deignan

Subjects

Chemistry

Topics
electrochemistry sweat analysis real time health poly methyl methacrylate contactless conductivity detection chemistry chemical analysis

Wearable chemical sensing – optimizing fluidics for real-time sweat analysis (2016)

Abstract This work presents the optimization of electrical parameters and sampling platforms to maximize the sensitivity of conductivity measurements for applications in wearable sweat sensing. Conductivity in sweat is related to electrolyte content and offers valuable information for hydration, athletic performance and nutrition. The most abundant ions of sweat electrolytes are sodium and chloride, making sweat conductivity directly related to their concentration [1]. Capacitively coupled contactless conductivity detection (C4D) was used to test the response of commercial gold microelectrodes (figure A). This work was done in preparation for the development of an on-body detection system for sweat analysis. On body testing requires sample handling specific to the method of testing, which in this case is non-contact. For this type of handling, polydimethylsiloxane (PDMS) and poly(methyl methacrylate) (PMMA) microchannels of various configurations were tested for their compatibility with the system and the effect of their geometry on signal sensitivity. Figures B-D show the dimensions of one such PMMA channel from top, bottom and expanded side view, respectively.
Collections Ireland -> Dublin City University -> Publication Type = Conference or Workshop Item
Ireland -> Dublin City University -> Subject = Physical Sciences: Chemistry
Ireland -> Dublin City University -> Subject = Medical Sciences: Health
Ireland -> Dublin City University -> Subject = Physical Sciences: Electrochemistry
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Science and Health: School of Chemical Sciences
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: National Centre for Sensor Research (NCSR)
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: INSIGHT Centre for Data Analytics

Full list of authors on original publication

Dermot Diamond, Shirley Coyle, Larisa Florea, Jennifer Deignan

Experts in our system

1
Dermot Diamond
Dublin City University
Total Publications: 607
 
2
Shirley Coyle
Dublin City University
Total Publications: 86
 
3
Larisa Florea
Dublin City University
Total Publications: 163
 
4
Jennifer Deignan
Dublin City University
Total Publications: 12