High-Sensitivity Pressure Sensors Based on a Low Elastic Modulus Adhesive.

Area of Science:

• Materials Science
• Mechanical Engineering
• Electrical Engineering

Background:

• Increasing demand for high-sensitivity pressure sensors in intelligent applications.
• Challenges in efficiently preparing industrial-grade high-sensitivity sensors.
• Need for improved strain transfer mechanisms in pressure sensing.

Purpose of the Study:

• To develop a highly sensitive and fatigue-resistant pressure sensor.
• To investigate the effect of adhesive elastic modulus on sensor performance.
• To enhance strain transfer efficiency for improved pressure sensitivity.

Main Methods:

• Utilizing adhesives with varying elastic moduli to bond double-sided sensitive grids.
• Fabricating pressure sensors with low elastic modulus adhesives.
• Employing finite element analysis (FEA) for sensitivity simulation and verification.

Main Results:

• Low elastic modulus adhesives effectively induce tensile and compressive strains on sensitive grids.
• Enhanced strain transfer efficiency observed with low elastic modulus adhesives.
• FEA simulation confirmed up to a 12% increase in sensor sensitivity.

Conclusions:

• Low elastic modulus adhesives significantly improve pressure sensor sensitivity and fatigue resistance.
• The developed method offers a simple and efficient approach for preparing high-performance pressure sensors.
• This technology is crucial for the miniaturization and integration of electronics in intelligent applications.