Fig. 5. Mechanical properties of the flexible LED based on vertical nanowire arrays. Photographs of the LED emitting blue light at curvature radii of (a) ∞, (b) 3.5 mm, and (c) –2.5 mm. (d) I–V characteristic of the flexible LED normalized to the number of contacted nanowires (left scale) or to the device surface (right scale). Inset shows the room-temperature EL spectra at various applied biases from 4 V to 8 V. Adapted with permission from ref. 58.
