Related Experiment Video
Updated: Feb 23, 2026
10:03
Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment
Published on: July 22, 2022
5.1K
Wearable Sweatband Sensor Platform Based on Gold Nanodendrite Array as Efficient Solid Contact of Ion-Selective
Shuqi Wang1, Yongjin Wu1, Yang Gu1
1i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics , Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People's Republic of China.
Analytical Chemistry
|September 2, 2017
Summary
Researchers developed a stable, wearable sensor using gold nanodendrites for ion-selective electrodes (ISE) and a solid-state reference electrode (RE). This platform enables real-time sweat sodium analysis for health and environmental monitoring.
Area of Science:
- Electrochemistry
- Materials Science
- Wearable Technology
Background:
- Portable and wearable chemical sensors are crucial for real-time analytical applications.
- Existing all-solid-state ion-selective electrode (ISE) and reference electrode (RE) platforms often lack simplicity and stability.
- Developing robust and reliable sensor platforms is essential for diverse applications.
Purpose of the Study:
- To propose a novel wearable sensor platform featuring an all-solid-state ISE and RE.
- To investigate the use of gold nanodendrite (AuND) array electrodes as solid contacts for ISEs.
- To evaluate the performance and stability of the developed sensor platform for sweat sodium analysis.
Main Methods:
- Fabrication of AuNDs on a microwell array chip via one-step electrodeposition.
- Development of an all-solid-state ISE using AuNDs as solid contacts for Na+ detection.
- Construction of a poly(vinyl acetate)/inorganic salt (PVA/KCl) membrane-coated Ag/AgCl RE.
- Integration of ISE and RE into a wearable sweatband sensor for real-time sweat analysis.
Main Results:
- AuND electrodes were successfully fabricated with controllable surface areas.
- ISEs with larger AuND surface area exhibited enhanced potential stability.
- The PVA/KCl membrane-coated RE demonstrated high potential stability over 3 months.
- The wearable sensor platform enabled efficient sweat collection and real-time sweat sodium analysis.
Conclusions:
- The proposed all-solid-state ISE and RE integrated sensor platform offers a simple and reliable solution.
- The developed sensor platform is suitable for portable and wearable devices in healthcare, sports, and environmental monitoring.
- Gold nanodendrites are effective solid contacts for enhancing ISE performance and stability.
