title: Structural Color Patterns by Electrohydrodynamic Jet Printed Photonic Crystals.
abstract: In this work, we demonstrate the fabrication of photonic crystal patterns with controllable morphologies and structural colors utilizing electrohydrodynamic jet (E-jet) printing with colloidal crystal inks. The final shape of photonic crystal units is controlled by the applied voltage signal and wettability of the substrate. Optical properties of the structural color patterns are tuned by the self-assembly of the silica nanoparticle building blocks. Using this direct printing technique, it is feasible to print customized functional patterns composed of photonic crystal dots or photonic crystal lines according to relevant printing mode and predesigned tracks. This is the first report for E-jet printing with colloidal crystal inks. Our results exhibit promising applications in displays, biosensors, and other functional devices.
authors.affiliation: State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China.
authors.forename: Haibo
authors.initials: H
authors.lastname: Ding
authors.affiliation: State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China.
authors.forename: Cun
authors.initials: C
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Tian
authors.affiliation: State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China.
authors.forename: Cihui
authors.initials: C
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China.
authors.forename: Guangbin
authors.initials: G
authors.lastname: Fu
authors.affiliation: State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China.
authors.forename: Luoran
authors.initials: L
authors.lastname: Shang
authors.affiliation: State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, China.
authors.forename: Zhongze
authors.identifier: http://orcid.org/0000-0001-8926-7710
authors.initials: Z
authors.lastname: Gu
keywords: colloidal crystals; electrohydrodynamic jet printing; photonic crystals; self-assembly; structural color