Figure 5. Biaxial compression.

(a) The device performance under reversible biaxial compression of 0% (black solid line), roughly 10% (green solid line) and roughly 20% (red solid line). Upon re-stretching to near flat conditions, the device shows comparable performance (black dashed line). (b) Device performance under very high biaxial compression of more than 50% (red solid line) compared with 0% flat state (black solid line).