File Name : figs1.tif

Caption : figure s1. (a) schematic of the ribbon wire test. (b) the frequency (1/t) versus the time of the peaks.

File Name : figs2.tif

Caption : figure s2. ribbon wire texture detecting result with a device without flexible ridge.

File Name : figs3.tif

Caption : igure s3. the piezovoltage pulses output by the device in a ribbon wire texture detecting test. the scanning range is set as 20 mm. the acceleration is set at 30 mm/s2 and the maximum velocity is set at 15 mm/s.