About the cover

March 2015 Volume 10 No 3

Controlling the emission from a light-responsive material to produce any desirable colour(s) on demand is essential for display technology, but it is challenging in terms of materials design. Xiaogang Liu and colleagues now describe a concept for tuning emission in the full colour spectrum by varying the shape and intensity of pulsed laser excitations. The utilization of the pulse-modulation technique with rationally designed lanthanide-doped core–shell upconversion multilayer nanocrystals has enabled volumetric 3D displays with high spatial resolution and locally addressable colour gamut. The cover image shows the additive colours that can be displayed in a transparent 3D matrix.

Letter p237; News & Views p203; In The Classroom p284

IMAGE: RENREN DENG

COVER DESIGN: ALEX WING

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