Printed Structurally Colored Cellulose Sensors and Displays (Adv. Mater. Technol. 1/2023)

Direct-Ink-Writing In article number 2200897, Gustav Nyström and co-workers report on soft and dynamic cellulose composites that display vibrant colors and multiple sensing and signaling capabilities. Hydroxypropyl cellulose acts as structurally colored matrix to disperse cellulose nanofibrils and carbon nanotubes, which enables 3D printability, and provides electrical feedback. The printed composite materials are promising for green electronics, soft robotics and interactive user interface applications, demonstrated here as dual readout optical and resistive strain sensors and color displays.