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Updated: Feb 22, 2026

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Fluorescence Lifetime Imaging of Molecular Rotors in Living Cells
Published on: February 9, 2012
26.0K
Note: Rapid measurement of fluorescence lifetimes using SiPM detection and waveform sampling
H-M Tsai1, J S Souris1, H-J Kim1
1Department of Radiology, The University of Chicago, Chicago, Illinois 60637, USA.
The Review of Scientific Instruments
|October 2, 2017
Summary
This study shows how to measure fluorescence lifetimes using simple, affordable components. This technique offers advantages like photo-bleaching resistance and is as precise as complex commercial instruments.
Area of Science:
- Analytical Chemistry
- Spectroscopy
- Biophysics
Background:
- Fluorescence lifetime measurement offers advantages over intensity measurements, including resistance to photobleaching and independence from external factors.
- Current fluorescence lifetime techniques often require complex, expensive instrumentation and slow data acquisition.
Purpose of the Study:
- To demonstrate a feasible method for measuring fluorescence lifetimes using readily available, cost-effective components.
- To achieve precision comparable to commercial instruments with simpler technology.
Main Methods:
- Utilized off-the-shelf analog silicon photomultipliers for fluorescence detection.
- Employed switched-capacitor array waveform sampling techniques for data acquisition.
- Developed a simplified setup for fluorescence lifetime determination.
Main Results:
- Successfully measured fluorescence lifetimes with high precision.
- Demonstrated that the developed method matches the performance of elaborate commercial instruments.
- Validated the feasibility of using accessible components for accurate fluorescence lifetime measurements.
Conclusions:
- A simplified and cost-effective approach for fluorescence lifetime measurement has been established.
- This method provides a viable alternative to complex commercial systems, making advanced fluorescence techniques more accessible.
- The findings pave the way for wider adoption of fluorescence lifetime measurements in various scientific fields.

