1 research outputs found
Dynamic Color Displays Using Stepwise Cavity Resonators
High-resolution
multicolor printing based on pixelated optical
nanostructures is of great importance for promoting advances in color
display science. So far, most of the work in this field has been focused
on achieving static colors, limiting many potential applications.
This inevitably calls for the development of dynamic color displays
with advanced and innovative functionalities. In this Letter, we demonstrate
a novel dynamic color printing scheme using magnesium-based pixelated
Fabry-PeĢrot cavities by gray scale nanolithography. With controlled
hydrogenation and dehydrogenation, magnesium undergoes unique metal
and dielectric transitions, enabling distinct blank and color states
from the pixelated Fabry-PeĢrot resonators. Following such a
scheme, we first demonstrate dynamic Ishihara plates, in which the
encrypted images can only be read out using hydrogen as information
decoding key. We also demonstrate a new type of dynamic color generation,
which enables fascinating transformations between black/white printing
and color printing with fine tonal tuning. Our work will find wide-ranging
applications in full-color printing and displays, colorimetric sensing,
information encryption and anticounterfeiting