4.6 Article

Bioinspired hydrogel microfibres colour-encoded with colloidal crystals

期刊

MATERIALS HORIZONS
卷 6, 期 9, 页码 1938-1943

出版社

ROYAL SOC CHEMISTRY
DOI: 10.1039/c9mh00528e

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资金

  1. National Natural Science Foundation of China [21603026]
  2. Max Planck Partner Group grant
  3. Natural Science Foundation of Jiangsu Province [BK20171013]
  4. Jiangsu Specially-Appointed Professor program
  5. State Key Laboratory of Materials-Oriented Chemical Engineering [ZK201809]

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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.

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