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TOSI20200603001

Rapid fluorescence lifetime measurement system

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ABSTRACT

A Slovenian public research organization has developed a novel method for measuring the fluorescence lifetime instead of or in addition to its intensity. The method enables the fluorescence lifetime of a sample to be determined without lengthy data acquisition and photobleaching of the sample.
Partners are sought among optical instrumentation manufacturers for licensing and technical cooperation agreements.

 

FULL DESCRIPTION

Fluorescence is the emission of light by certain substances, for example, fluorophores, such as dyes, or biomolecules, after they have been illuminated with light of specific excitation wavelengths. Measurements of the properties of
fluorescent light emitted by various samples are used in a very wide range of applications. Just some examples are imaging of cell structures, tracking of antibodies and DNA sequencing in biology, detection of cancer cells in medicine
and quality control in pharmaceutical production.

The fluorescence lifetime is most commonly determined with a time-correlated single-photon counting (TCSPC), a method, where the time between the excitation pulse and the detection of individual fluorescence photons is measured. Intrinsic slowness of the TCSPC method and the induced photobleaching limit the applicability of measuring fluorescence lifetime in many potential fields, like in pharmacy, where high throughput of tested samples is required. Also, the TCSPC method requires complex and expensive instrumental setup.

A silicon photomultiplier, on the other hand, is a very fast photodetector, whose response to a single photon is faster than the fluorescence lifetime. Therefore, the shape of the electronic signal, i.e., the waveform, output by the silicon photomultiplier will follow the exponential decay of the fluorescence light resulting from a single pulse of excitation. If the resulting waveform is sampled with sufficient accuracy, the need for long accumulation of single-photon arrival times and also large excitation light intensities can thus be avoided. Excitation light with low intensities reduces the risk of photobleaching. Silicon photomultiplier photodetectors and waveform sampling chips developed for the needs of high energy physics experiments have become low-cost, off-the-shelf components. Thus, the method allows a cost-effective way to measure the fluorescence lifetime and, at the same time, avoids lengthy data acquisition and photobleaching of the sample.

The researchers come from a Slovenian public research organization. Their research involves experimental particle physics on large particle accelerators and development of complex detectors.
The partners are sought among optical instrumentation manufacturers. As a public research organization, the researchers are available for:
Licensing agreement where potential partners will be offered a license to the pending patent application
Technical cooperation for the development of a complete instrumentation device for measuring the fluorescence lifetime by this method.


Partner expertise sought:

- Specific area of activity of the partner: The partners are sought among optical instrumentation manufacturers for:
Licensing agreements to the pending patent application
Technical cooperation agreements: developing the complete instrumentation device


Advantages & innovations:

The main advantages of the method proposed over TCCSP:
Cost-effective compared to common TCCSP technology
Long accumulation of single-photon arrival times and also large excitation light intensities of TCCSP are improved
Excitation light with low intensities reduces the risk of photobleaching


Development Stage:

Available for demonstration


IPR:

Patent(s) applied for but not yet granted - The patent application has been filed in Great Britain. Further applications are planned.

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KEY INFORMATION

Country of origin
SLOVENIA
Date created
15/06/2020
Date updated
22/03/2021
Deadline
24/06/2021

PARTNERSHIP(S) SOUGHT

License agreement Technical cooperation agreement

CLASSIFICATIONS

INDUSTRY SECTORS
Materials Technology \ Energy Topics \ Physical and Exact Sciences \ Medicine and Health \ Life Sciences \ Food and Drink \ Measurement, Testing & Standards \ Chemistry & Chemical Engineering \ Renewable Energy
TECHNOLOGY KEYWORDS
MEASUREMENTS AND STANDARDS / Measurement Tools / Electrical Technology related to measurements / MEASUREMENTS AND STANDARDS / Measurement Tools / Optical Technology related to measurements / MEASUREMENTS AND STANDARDS / Measurement Tools / Sensor Technology related to measurements
COMMERCIAL KEYWORDS
Other research and experimental development on natural sciences and engineering
MARKET KEYWORDS
OTHER ELECTRONICS RELATED / Laser Related / OTHER ELECTRONICS RELATED / Analytical and Scientific Instrumentation / Chromatographs and related laboratory equipment / OTHER ELECTRONICS RELATED / Analytical and Scientific Instrumentation / Other analytical and scientific instrumentation / INDUSTRIAL PRODUCTS / Industrial Automation / Industrial measurement and sensing equipment
A2020