Finite Element Analysis Model of Electronic Skin Based on Surface Acoustic Wave Sensor

Area of Science:

• Materials Science
• Electronics Engineering
• Biomedical Engineering

Background:

• Traditional electronic skin (e-skin) faces limitations in flexibility, power consumption, and safety due to rigid integrated circuits.
• Growing demand for flexible electronic devices necessitates advanced e-skin solutions.

Purpose of the Study:

• To design and investigate a wireless passive e-skin based on lithium niobate surface acoustic wave sensors (SAWS).
• To explore the multi-sensing capabilities and performance characteristics of the developed SAWS e-skin.
• To provide simulation-based guidance for the fabrication and application of SAW e-skin.

Main Methods:

• Fabrication of a wireless passive e-skin utilizing lithium niobate piezoelectric film for SAWS.
• Implementation of multi-sensing functionalities for stress, temperature, and sweat ion concentration.
• Finite element analysis using simulation software to explore SAWS characteristic parameters and influencing factors.

Main Results:

• The developed e-skin demonstrates small size, high precision, low power consumption, and enhanced flexibility.
• The SAWS-based e-skin successfully integrates multi-sensing capabilities, with measurements presented in frequency.
• Simulation results provide crucial insights into SAWS behavior and performance curves.

Conclusions:

• The wireless passive SAWS e-skin presents a promising flexible sensor platform for diverse external stimuli.
• The study offers valuable experimental guidance for the future design and preparation of SAW e-skin.
• This technology advances the development of safer and more efficient electronic skin applications.