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Updated: Jan 29, 2026

Luminescence Lifetime Imaging of O2 with a Frequency-Domain-Based Camera System
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Smartphone-based apparatus for measuring upconversion luminescence lifetimes.

Zece Zhu1

  • 1Wuhan National Laboratory for Optoelectronics & School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China.

Analytica Chimica Acta
|February 5, 2019
PubMed
Summary

This study presents a low-cost, smartphone-based system for measuring luminescence lifetimes. The innovative apparatus offers a miniaturized and affordable alternative to traditional, expensive detection instruments.

Keywords:
Lanthanide upconversionLuminescence lifetimeMotorSmartphoneTime-resolved

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Area of Science:

  • Analytical Chemistry
  • Spectroscopy
  • Biomedical Instrumentation

Background:

  • Luminescence lifetime detection is crucial for time-resolved analysis.
  • Traditional instruments (e.g., streak cameras) are costly and bulky.
  • There is a need for accessible, portable luminescence lifetime measurement tools.

Purpose of the Study:

  • To develop a low-cost, miniaturized apparatus for measuring upconversion luminescence lifetimes.
  • To utilize a smartphone as the core component for luminescence detection.
  • To demonstrate a cost-effective and portable alternative to conventional methods.

Main Methods:

  • A smartphone was integrated with a 980 nm CW laser and a motor.
  • Samples were rotated at high linear velocity to create luminescence arcs.
  • Arc length and grayscale distribution were analyzed to determine luminescence decay curves and lifetimes.
  • A tuner app was used to measure rotation rate for time conversion.

Main Results:

  • The developed apparatus successfully measured luminescence lifetimes.
  • Results from different smartphones showed consistent lifetime values, indicating broad applicability.
  • The system proved to be significantly cheaper and more miniaturized than traditional instruments.

Conclusions:

  • The smartphone-based system offers a viable, low-cost solution for luminescence lifetime measurements.
  • This method has promising applications in point-of-care testing for bioanalysis and disease diagnosis.
  • The universality across different smartphones highlights its practical potential.