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Theoretical framework for engineering Boltzmann luminescent nanothermometry.

Mingzhu Yang1, Hongxin Zhang2, Fan Zhang3

  • 1Laboratory of Advanced Materials, College of Smart Materials and Future Energy, Department of Chemistry, New Cornerstone Science Laboratory, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, China.

Light, Science & Applications
|May 21, 2026
PubMed
Summary
This summary is machine-generated.

A new theoretical framework for luminescent nanothermometry using thermally coupled levels (TCLs) provides guidelines for non-invasive temperature sensing. This framework enables precise temperature measurements and predictive material design for enhanced nanothermometers.

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Spectroscopy

Background:

  • Luminescent nanothermometry using thermally coupled levels (TCLs) is a powerful non-invasive temperature sensing technique.
  • Current methods lack sufficient theoretical guidelines for optimal performance and material design.

Purpose of the Study:

  • To establish a theoretical framework for Boltzmann luminescent nanothermometry.
  • To define the temperature window for thermal equilibrium in TCLs.
  • To enable predictive material design for temperature-sensitive nanomaterials.

Main Methods:

  • Development of a theoretical framework for Boltzmann luminescent nanothermometry.
  • Quantitative definition of the thermal equilibrium window for TCLs.
  • Establishment of a practical criterion for stable thermal coupling of TCLs.

Main Results:

  • A theoretical framework for TCLs-based luminescent nanothermometry was established.
  • A practical criterion for stable thermal coupling was defined.
  • A high sensitivity of 6.17% K⁻¹ was achieved, demonstrating predictive design capabilities.

Conclusions:

  • The developed framework provides essential theoretical guidelines for luminescent nanothermometry.
  • It enables the rational design of high-precision nanothermometers with predictable temperature sensitivity.
  • This work lays the foundation for advancing non-invasive temperature sensing technologies.