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October 2, 2025ACS Applied Materials & InterfacesOpen Access

Breakthrough in Luminescence Thermometry─Supersensitive Emission Line Shift of Whispering Gallery Modes in Rhodamine B-Doped Cellulose Fiber Microresonators

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Authors

PWPrzemysław WoźnyKSKevin Soler-CarracedoMSMałgorzata Skwierczyńska

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Overview

This research demonstrates a significant spectral shift in whispering gallery modes of cellulose fibers, indicating their potential for optical thermometry.

Key Points

  • A giant spectral shift of ∼0.47 nm K–1 was observed, indicating high sensitivity in temperature detection.
  • The Rhodamine B-doped cellulose fibers exhibited excellent temperature resolution of about 0.17 K.
  • This method provides 27 times greater sensitivity compared to other microresonators, showcasing its effectiveness.
  • The study used a confocal system with a 532 nm laser to analyze the WGM emission for the first time.

Cite This Study

Woźny et al. (2025) studied this question.

synapsesocial.com/papers/68de8eaeaa6cec72c69ea8d1https://doi.org/10.1021/acsami.5c12765
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