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Updated: Jan 30, 2026

Generation of Alginate Microspheres for Biomedical Applications
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One-Pot Strategy to Prepare Structurally Colored Alginate Dispersions for Functional Applications.

Ziqi Teng1, Yaru Meng1, Qinsheng Zhao1

  • 1Department of Biological and Bioenergy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China.

ACS Applied Materials & Interfaces
|January 29, 2026
PubMed
Summary

Researchers developed a novel method for creating structural colored hydrogels using sodium alginate (SA) and colloidal particles. This technique offers a faster, scalable approach for advanced optical materials.

Keywords:
alginate hydrogelcoaxial printingdirect ink writingfibersstructural colored dispersion

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Structural colored hydrogels are advanced optical materials with applications in displays, wearables, and sensors.
  • Current preparation methods are often slow and difficult to scale up.

Purpose of the Study:

  • To develop a simple, scalable method for preparing structural colored hydrogels.
  • To utilize sodium alginate (SA) as a base material for creating functional inks.

Main Methods:

  • A one-pot method was used, mixing SA solution with a colloidal emulsion and cuttlefish ink.
  • Depletion-induced interactions drove colloid assembly into ordered arrays.
  • Ion-cross-linking with calcium ions (Ca2+) was employed for gelation.

Main Results:

  • A stable, structural colored SA dispersion was successfully prepared.
  • The dispersion was solidified into hydrogels via rapid gelation or mild treatment.
  • The resulting material functioned as a versatile ink for fabricating fibers and 3D printed hydrogels.

Conclusions:

  • The one-pot preparation of structural colored polymer dispersions is a versatile and scalable platform.
  • This method enables the fabrication of diverse structural colored hydrogel-based devices.
  • The developed technique addresses limitations of conventional methods, paving the way for new applications.