In article number https://doi.org/10.1002/adfm.2019022161902216, SungWoo Nam and co‐workers report a colorimetric strain sensor with electrical quantification based on an integrated system of colloidal photonic crystals and a crumpled graphene photo‐transducer. The developed sensor enables direct visual readout and a 100‐fold improved strain sensing over plain crumpled graphene strain sensors in applications including body motion monitoring.

Published in: "Advanced Functional Materials".