Issue 27, 2019

Magnetically responsive colloidal crystals with angle-independent gradient structural colors in microfluidic droplet arrays

Abstract

Magnetically responsive colloidal crystal films with gradient structural colors have a significant value in optical applications via controllable external stimuli. Herein, we propose a practical method for fabricating colloidal crystal hydrogel films with continuous gradient structural colors by using superparamagnetic colloidal nanoparticles. The colloidal nanoparticles could self-assemble into chain-like non-close-packed arrays to present structural colors under the stimuli of external magnetic fields. And structural colors with gradient changes could be achieved when subjected to a spatial magnetic field with a remarkable variation in field strength and direction. By integrating with a microfluidic droplet array template with spherical symmetry morphology, we have demonstrated convenient fabrication of free-standing colloidal crystal films with angle-independent gradient structural colors, which could be utilized for the fabrication of optical devices.

Graphical abstract: Magnetically responsive colloidal crystals with angle-independent gradient structural colors in microfluidic droplet arrays

Supplementary files

Article information

Article type
Paper
Submitted
11 May 2019
Accepted
11 Jun 2019
First published
11 Jun 2019

Nanoscale, 2019,11, 12898-12904

Magnetically responsive colloidal crystals with angle-independent gradient structural colors in microfluidic droplet arrays

J. Chi, C. Shao, Y. Zhang, D. Ni, T. Kong and Y. Zhao, Nanoscale, 2019, 11, 12898 DOI: 10.1039/C9NR04011K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements