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Fiber optic probe with functional polymer composites for hyperthermia.

Alexa Hernández-Arenas1, Reinher Pimentel-Domínguez1, J Rodrigo Vélez-Cordero2

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Summary

A new fiber optic photothermal probe (FOPP) uses polymer composites for controlled hyperthermia. This compact device enables precise temperature measurement and achieves therapeutic temperatures with low optical power.

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Optics

Background:

  • Photothermal therapy offers a promising approach for localized tissue treatment.
  • Developing precise and controllable tools for photothermal applications is crucial.
  • Existing methods may lack integration of temperature monitoring and controlled heat generation.

Purpose of the Study:

  • To develop and characterize a novel fiber optic photothermal probe (FOPP).
  • To integrate controlled photothermal effect generation with simultaneous temperature measurement.
  • To evaluate the probe's potential for hyperthermia applications.

Main Methods:

  • Fabrication of a compact probe tip using functional polymer composites (carbon-based and rare-earth) on multimode fibers.
  • Incorporation of fluorescent thermometry for simultaneous temperature monitoring.
  • Experimental and numerical analysis of thermal gradients and temperature distribution.
  • Evaluation of heating capabilities at low optical powers.

Main Results:

  • Demonstrated a compact fiber optic photothermal probe (FOPP).
  • Achieved controlled photothermal effects with simultaneous temperature measurement via fluorescent thermometry.
  • Obtained significant thermal gradients near the probe tip.
  • Reached hyperthermia-relevant temperatures using less than 280 mW of optical power.

Conclusions:

  • The developed FOPP is effective for controlled photothermal effect generation.
  • The probe's integrated temperature sensing and low power requirements make it suitable for hyperthermia.
  • This technology offers a precise tool for localized thermal therapies.