Full-Spectrum Flexible Color Printing at the Diffraction Limit
Abstract
Color printing at the diffraction limit has been recently explored by fabricating nanoscale plasmonic structures with electron beam lithography. However, only a limited color range and constant intensity throughout the structure have been demonstrated. Here we show an alternative, facile approach relying on the direct, open-atmosphere electrohydrodynamic rapid nanodrip printing of controlled amounts of red, green and blue (RGB) quantum dots at a resolution of 250 nm. The narrow emission spectrum of the dots allows the coverage of a very broad color space, exceeding standard RGB (sRGB) of modern display devices. We print color gradients of variable intensity, which to date could not be achieved with diffraction-limited resolution. Showcasing the capabilities of the technology, we present a photo-realistic printed image of a colorful parrot with a pixel size of 250 nm.
Cite
@article{arxiv.1609.08153,
title = {Full-Spectrum Flexible Color Printing at the Diffraction Limit},
author = {Patrizia Richner and Patrick Galliker and Tobias Lendenmann and Stephan J. P. Kress and David K. Kim and David J. Norris and Dimos Poulikakos},
journal= {arXiv preprint arXiv:1609.08153},
year = {2016}
}