The researchers then use the pictures to measure the length and width of each pugmark, the angle between toes, and 10 other variables to establish an ID.
The entire device is 300 micrometres thick – about the width of three human hairs – and withstood tests in which it was bent to a 90-degree angle 700, 000 times.
整个设备300微米厚,大约只有三倍头发丝的厚度,可以经受90度的弯曲70万次。
3
The results showed that there were distinct differences in micro-fibril Angle, width of growth-ring and tracheid diameter.