Capacitive Sweat Sensor Constructed by Gui Diatomaceous Earth

Chia Ming Yang*, Hsin Yin Peng, Wei Yin Zeng, Chun Hui Chen, Chao Sung Lai

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

Sweat rate monitor is an important factor for hydration in exercise and training. However, the measurement of sweat rate is complicated and time-consumption in the conventional method by a calculation of total weight loss. Sweat sensor is a potential candidate to overcome these drawbacks, which may be possible to use in wearable applications for continuous detection. In the study, a new capacitive-type sensor constructed by Gui diatomaceous earth (GDE) is first proposed for solution volume detection in μl level on flexible substrate. Solution can easily penetrate into GDE through the top electrode with interdigital patterns. Capacitance is increased with volume of RO water, which can be explained by increases of dielectric constant and response area after water penetration. Sensitivity is about 7.2 pF/μl and application volume range is from 2 to 8 μl, which is a potential candidate for human sweating rate test in the future.

Original languageEnglish
Pages (from-to)181-184
Number of pages4
JournalProcedia Engineering
Volume168
DOIs
StatePublished - 2016
Event30th Eurosensors Conference, Eurosensors 2016 - Budapest, Hungary
Duration: 04 09 201607 09 2016

Bibliographical note

Publisher Copyright:
© 2016 The Authors.

Keywords

  • Sweat rate
  • capacitance
  • gui diatomaceour earth
  • interdigital

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