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Updated: May 20, 2026

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Reversible optical data storage and encryption enabled by phase-change and hydrogel integration.

Asad Nauman1, Guli Gulinihali1, Tristen Moncada1

  • 1Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA, USA.

Light, Science & Applications
|May 18, 2026
PubMed
Summary
This summary is machine-generated.

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This study introduces a hybrid optical storage device combining laser-written antimony trisulfide (Sb₂S₃) and a hydrogel for full-color image multiplexing and secure data storage.

Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • Phase-change materials and hydrogels are crucial for advanced optical information storage and encryption.
  • Current technologies require versatile, low-cost, high-speed materials for next-generation applications.

Purpose of the Study:

  • To develop a hybrid platform for multi-level optical data storage and full-color image multiplexing.
  • To integrate laser-written antimony trisulfide (Sb₂S₃) with a humidity-responsive hydrogel for enhanced functionalities.

Main Methods:

  • Direct laser writing of Sb₂S₃ on a humidity-responsive azido-grafted carboxymethyl cellulose (CMC-N₃) hydrogel.
  • Utilizing laser-induced amorphous-crystalline transitions in Sb₂S₃ for non-volatile data storage.
  • Employing UV-programmable cavity modulation and humidity-dependent responses for tunable full-color imaging.

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Last Updated: May 20, 2026

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Published on: September 25, 2020

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06:24

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Published on: October 31, 2019

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07:45

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Published on: February 6, 2014

Main Results:

  • Fabrication of a transmissive multiplexed optical storage device with full-color image capabilities.
  • Demonstration of independent encoding and retrieval of multi-level information through dynamic and reversible processes.
  • Achieved humidity-dependent tunable full-color image response and non-volatile, rewritable optical data.

Conclusions:

  • The hybrid platform offers a new paradigm for multifunctional optical devices.
  • Potential applications include secure data storage, anti-counterfeiting displays, and environmental sensing.
  • Synergistic integration of Sb₂S₃ and hydrogel enables advanced optical information processing.