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Fiber optic probe with functional polymer composites for hyperthermia.
Alexa Hernández-Arenas1, Reinher Pimentel-Domínguez1, J Rodrigo Vélez-Cordero2
1Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City 04510, Mexico.
Biomedical Optics Express
|September 13, 2021
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.
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.
