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Hair-Like Flexible Airflow Sensor for Large-Area Airflow Sensing
Yingxi Xie1, Feilong Liu1, Yongchao Luo2
1School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou, 510641, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|September 9, 2025
Summary
A novel hair-like flexible airflow sensor was developed using laser direct writing and electrostatic flocking. This sensor offers high sensitivity and fast response for large-area airflow monitoring in various applications.
Area of Science:
- Materials Science
- Sensor Technology
- Nanotechnology
Background:
- Flexible airflow sensors are crucial for various applications but developing high-performance, large-area sensors remains challenging.
- Existing sensors often face limitations in sensitivity, response time, and adaptability to different surfaces.
Purpose of the Study:
- To propose an efficient technology for airflow sensing using a hair-like flexible sensor.
- To develop a high-performance flexible airflow sensor capable of large-area coverage and conformal monitoring.
Main Methods:
- Fabrication of a hair-like flexible airflow sensor utilizing laser direct writing and electrostatic flocking techniques.
- Characterization of sensor performance, including sensitivity, response time, and detection range.
Main Results:
- The sensor demonstrated high sensitivity (5.25% s m-1) and a fast response time (39.83 ms).
- Achieved a wide detection range (3.48 - 18.36 m s-1) with minimal airflow field disturbance.
- Exhibited excellent flexibility and conformal monitoring capabilities on diverse surfaces.
Conclusions:
- The developed hair-like flexible airflow sensor offers an efficient, cost-effective solution for airflow sensing.
- Its design facilitates integration into arrays for large-area deployment, enabling comprehensive airflow monitoring.
- Potential applications include environmental monitoring, robotics, wearable electronics, and tactile sensing.
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