Related Experiment Video
Updated: Sep 19, 2025
05:57
Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
Published on: March 17, 2023
2.4K
Transparent, Stretchable PVC-Liquid Metal Composite Sensor for Smart Wearable Electronics
Yuwei Lan1, Shujia Chen1, Tianyun Dong2,3
1School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
ACS Applied Materials & Interfaces
|June 3, 2025
Summary
Researchers developed a transparent, flexible sensor using liquid metal (LM) in a polymer matrix. This durable sensor achieves high sensitivity and stretchability, ideal for advanced wearable electronics.
Area of Science:
- Materials Science
- Nanotechnology
- Polymer Science
Background:
- Flexible sensors are crucial for wearable electronics.
- Achieving transparency, high sensitivity, and mechanical robustness simultaneously is challenging.
- Liquid metal (LM) fillers offer unique properties like stretchability and biocompatibility.
Purpose of the Study:
- To develop a transparent, stretchable, and highly sensitive flexible composite sensor.
- To investigate the use of poly(vinyl chloride) (PVC) and dibutyl adipate (DBA) with LM fillers.
- To optimize sensor performance for practical applications.
Main Methods:
- Fabrication of a composite sensor using PVC, DBA, and a low concentration (0.1 wt %) of LM.
- Characterization of sensor transparency, stretchability, and sensitivity.
- Evaluation of sensor performance in various environmental conditions.
Main Results:
- The sensor achieved 50.12% transparency due to the polymer matrix and nanoscale LM dispersion.
- Demonstrated excellent stretchability (530%) and high sensitivity (gauge factor = 4.27).
- Showed reliable performance in humid and saline environments, highlighting durability.
Conclusions:
- A practical strategy for creating transparent, durable, high-performance composite sensors was developed.
- The PVC/DBA matrix stabilized LM dispersion, enhancing sensor properties.
- The developed sensor is suitable for wearable electronics and intelligent systems.
