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May 29, 2026Applied Physics BOpen Access

Optical characterization by a fiber-optic system of UV-induced refractive index modulation in gelatin–methacrylamide hydrogels

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Authors

JCJakub CzubekPSPatryk SokołowskiKSKrzysztof Słowiński

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Overview

Randomized trial demonstrates refractive index modulation in hydrogels, suggesting new applications in biophotonics.

Key Points

  • This research aims to develop gelatin-methacrylamide hydrogels with tunable refractive index through UV-induced photopolymerization.
  • Hydrogels synthesized using non-toxic components
  • Characterization performed via fiber-optic refractometry and validated with Abbe refractometer
  • Dynamic light scattering and Raman spectroscopy used to analyze polymer dimensions and responses.
  • UV irradiation produced RI modulation from 1.32 to 1.36 at 1310 nm with R^2 = 0.996
  • Residual dissolved oxygen inhibited early photopolymerization leading to reduced polymer dimensions
  • Uniform polymer growth followed oxygen depletion resulted in predictable RI increases with irradiation time.

Cite This Study

Czubek et al. (2026) studied this question.

synapsesocial.com/papers/6a192da0fab5b468c441687dhttps://doi.org/10.1007/s00340-026-08688-z
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