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Issue 9, 2019

Bioinspired hydrogel microfibres colour-encoded with colloidal crystals

Author affiliations

Abstract

Herein we describe a colour encoding system based on sequentially-encoded colloidal crystal microdots within hydrogel microfibres. This approach exploits a microfluidic spinning technology to generate microfibres in which colloidal crystals, of tuneable size, interval distance, number and sequential array, are orthogonally and simultaneously embedded. The hydrogel microfibre is comprised of calcium alginate, which can gel rapidly, is transparent and soft, and serves as a scaffold for the colloidal crystals. Further, the structural colour of the colloidal crystal microdots is visible and spectroscopically readable, offering a reliable and versatile colour-coding toolbox. We demonstrate the scalability and tuneability of the microfluidic spinning approach for generating hydrogel microfibres that exhibit encoding units from single dot to multiple coloured dots. This paper provides the proof of concept study of developing the application of the colloidal crystals to construct a novel encoding system.

Graphical abstract: Bioinspired hydrogel microfibres colour-encoded with colloidal crystals

Supplementary files

Article information


Submitted
06 Apr 2019
Accepted
19 Jun 2019
First published
24 Jun 2019

Mater. Horiz., 2019,6, 1938-1943
Article type
Communication

Bioinspired hydrogel microfibres colour-encoded with colloidal crystals

Z. Meng, J. Zhang, X. Deng, J. Liu, Z. Yu and C. Abell, Mater. Horiz., 2019, 6, 1938 DOI: 10.1039/C9MH00528E

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