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This study presents Neodymium-doped Yttrium Oxide nanoparticles as dual-purpose agents for photothermal therapy. These nanoparticles act as sensitive thermometers and efficient heaters, enabling real-time diagnosis and treatment.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biomedical Engineering

Background:

  • Controllable photothermal therapy requires integrated platforms for real-time diagnosis and treatment.
  • Developing materials with sensitive thermometry and efficient heat production is essential for this goal.

Purpose of the Study:

  • To demonstrate Neodymium (Nd³⁺)-doped Yttrium Oxide (Y₂O₃) nanoparticles as a single platform for sensitive thermometry and efficient photothermal heating.
  • To investigate the performance of these nanoparticles in the first and second biological windows for potential therapeutic applications.

Main Methods:

  • Synthesis of Nd³⁺-doped Y₂O₃ nanoparticles using a combined Pechini-foaming technique.
  • Characterization of thermal sensing capabilities using luminescence intensity ratio, spectral line position, and bandwidth as temperature-dependent parameters across a wide temperature range (123-873 K).
  • Evaluation of heating efficiency, achieving a temperature increase of 100 K, and the influence of Nd³⁺ doping concentration.

Main Results:

  • Nd³⁺-doped Y₂O₃ nanoparticles exhibited sensitive thermometry across a broad temperature range.
  • The nanoparticles demonstrated efficient heat generation for photothermal applications.
  • The study analyzed various sensing parameters, including relative thermal sensitivity and temperature resolution, and their dependence on Nd³⁺ concentration.

Conclusions:

  • Nd³⁺-doped Y₂O₃ nanoparticles are promising candidates for integrated photothermal therapy, offering both diagnostic thermometry and therapeutic heating capabilities.
  • The material's performance in biological windows and the influence of doping concentration provide valuable insights for optimizing such theranostic platforms.