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Related Concept Videos

Photoluminescence: Applications01:14

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
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Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
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Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...

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Updated: May 20, 2026

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
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High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

Luminescence nanothermometry.

Daniel Jaque1, Fiorenzo Vetrone

  • 1Fluorescence Imaging Group, Departamento de Física de Materiales C-04, Insitituto Nicolás Cabrera, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid 28049, Spain. daniel.jaque@uam.es

Nanoscale
|July 4, 2012
PubMed
Summary
This summary is machine-generated.

This review details luminescence nanothermometry, a technique using light emission to measure temperature at the nanoscale. It compares different methods based on luminescence properties and materials, highlighting their pros and cons.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Physical Chemistry

Background:

  • Accurate temperature measurement at the nanoscale is crucial for understanding various physical and biological processes.
  • Luminescence nanothermometry offers a non-contact method for probing temperature in confined environments.

Purpose of the Study:

  • To provide a comprehensive review of the current state of luminescence nanothermometry.
  • To compare different classes of luminescence nanothermometry based on luminescence parameters.
  • To discuss luminescent materials, thermal sensitivity mechanisms, and the advantages/disadvantages of various approaches.

Main Methods:

  • Review and categorization of luminescence nanothermometry techniques based on luminescence intensity, bandwidth, bandshape, polarization, spectral shift, and lifetime.
  • Discussion of luminescent materials employed in these techniques.
  • Analysis of the underlying mechanisms responsible for luminescence thermal sensitivity.

Main Results:

  • Detailed comparison of different luminescence nanothermometry classes.
  • Summary of key findings for each approach.
  • Identification of advantages and disadvantages associated with each method.

Conclusions:

  • Luminescence nanothermometry is a versatile tool for nanoscale temperature mapping.
  • The choice of technique and material depends on the specific application requirements.
  • Further research can optimize existing methods and explore novel approaches for enhanced sensitivity and accuracy.