Bio-inspired, sensitivity-enhanced, bi-directional airflow sensor for turbulence detection

Abstract

Detecting airflow turbulence precursors promptly is crucial for ensuring flight safety and control. The initial stages of turbulence involve small reverse flows with random velocities and directions, which are not...

High-Performance Airflow Sensors Based on Suspended Ultralong Carbon Nanotube Crossed Networks

“…High-performance airflow sensors are in huge demand in many fields such as aerospace industry, weather forecasting, environmental monitoring, chemical and biological engineering, health monitoring, and wearable smart devices, etc. − These applications usually have strict requirements on the performance of airflow sensors in terms of sensitivity, response time, detection threshold, and detection range, etc. − However, traditional airflow sensors based on hot-wire or hot-film mechanisms can hardly meet these requirements, and their shortcomings such as complicated fabrication processes (heavily depend on microelectro mechanical systems (MEMS)-based chips) and high power-consumption are also fatal. − Among airflow sensors with various working mechanisms, piezoresistive sensors are promising candidates due to their simple fabrication and easy signal acquisition. , However, the sensing performance and practicality of previously reported piezoresistive sensors are still far from satisfactory due to the unsatisfactory performance of their functional materials as well as coarse structural designs.…”