Flexible micro thermal shear stress sensor array

This paper presented a flexible micro thermal shear stress sensor array with double hot-line resistors, which can be used to detect the value and the direction of shear stress on complicated surface. Based on the principle of sensor, Comsol was used to simulate the temperature and flow field of the sensor. The process flowchart was designed. The release of polyimide from PDMS is easy after being soaked in alcohol. The sensor's TCR and response frequency were tested. The experimental results show that the flowchart of process is simple and the parameters of structure are reasonable, it can achieve the required flexible sensor array.