Open AccessDirect Laser Writing of Four-Dimensional Structural Color Microactuators Using a Photonic Photoresist
Author(s) -
Marc del Pozo,
Colm Delaney,
Cees W. M. Bastiaansen,
Dermot Diamond,
Albertus P. H. J. Schenning,
Larisa Florea
Publication year - 2020
Publication title -
acs nano
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.554
H-Index - 382
eISSN - 1936-086X
pISSN - 1936-0851
DOI - 10.1021/acsnano.0c02481
Subject(s) - photoresist , materials science , photonics , structural coloration , fabrication , laser , nanotechnology , maskless lithography , lithography , optoelectronics , microstructure , 3d printing , photonic crystal , optics , resist , electron beam lithography , composite material , medicine , alternative medicine , physics , layer (electronics) , pathology
With the advent of direct laser writing (DLW) using two-photon polymerization (TPP) the generation of high resolution three-dimensional (3D) microstructures has increased dramatically. However, the development of stimuli-responsive photoresists to create four-dimensional (4D) microstructures, remains a challenge. Herein, we present a supramolecular cholesteric liquid crystalline (CLC) photonic-photoresist for the fabrication of 4D photonic micro-actuators, such as pillars, flowers, and butterflies, with sub-micron resolution. These micron-sized features display structural color and shape changes triggered by variation of humidity or temperature. These findings serve as a roadmap for the design and creation of high-resolution 4D photonic micro-actuators.
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