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. 2015 Nov 30;12(2):180–184. doi: 10.1002/smll.201502849

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© 2015 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Stretchable LED diode matrix. a) The LED matrix comprises 5 × 5 LEDs, each connected to one vertical and one horizontal addressing line. All the addressing lines are collected on one side to form the contact. b) The two addressing planes are isolated from each other by a thin patterned PDMS layer. The LEDs are mounted on top of two printed silver epoxy pads. c) The fabricated LED matrix wrapped around a glass cylinder. The LEDs are separated by 4 mm. d,e) The LED is shown in the off and on state. The circular reflection arises from the PDMS protection layer on top. f–h) The LED matrix can withstand stretching to about 20% or wrapping around a glass cylinder. The pictures were taken under ambient light conditions, which demonstrate the brightness of the LEDs.