Figure 2

(a–c) SEM images of the representative cracked region having a magnification of (a) 1,000, (b) 5,000 and (c) 20,000 respectively, showing only one primary crack generated on the sensor indicating its weakest part.

(a–c) SEM images of the representative cracked region having a magnification of (a) 1,000, (b) 5,000 and (c) 20,000 respectively, showing only one primary crack generated on the sensor indicating its weakest part.