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Complex Light INside Channelled Hollow-core for FCS nanoparticle characterization

Project description

Portable fluorescence correlation spectroscopy for clinical settings

Fluorescence correlation spectroscopy (FCS) detects nanoscale species in their environments, measuring interactions and binding constants. However, current confocal-based systems are bulky and inflexible, limiting their use outside of laboratories and highlighting the need for compact, flexible FCS solutions. With the support of the Marie Skłodowska-Curie Actions programme, the CLINCH-FCS project will harness the interaction between diffusing nanoparticles (NPs) and complex light fields in a hollow-core optical waveguide (HCW) directly printed on the facet of an optical fibre. This will lead to the development of a portable FCS tool suitable for clinical settings, with the potential to enhance existing FCS technologies. The device will enable extended observation times by confining NP diffusion within the waveguide core while delivering rapid detection that outperforms image-based methods.

Objective

Fluorescence correlation spectroscopy (FCS) is an innovative technique for the detection and characterization of nanoscale species within their natural environment. It has successfully measured protein-protein and protein-lipid interaction dynamics, determined spectroscopic parameters of fluorophores and monitored binding constants among diffusing species. However, current FCS systems, predominantly based on confocal microscopes, have large footprint and inflexible focal observation volumes, limiting their applicability outside controlled laboratory settings. There is a strong need for compact, flexible FCS solutions. My approach addresses this need by exploiting the interaction between diffusing nanoparticles (NPs) and complex light fields within a hollow-core optical waveguide (HCW), nanoprinted directly onto an optical fiber facet. This advancement not only paves the way for a portable FCS tool suitable for clinical environments but also has the potential to enhance existing FCS technology. Our device offers two major advantages: (i) prolonged observation times due to the confinement of NP diffusion within the waveguide core, and (ii) rapid detection that surpasses image-based techniques by recording only emitted powers. By integrating extended observation periods with high acquisition rates, my FCS system facilitates the study of fast dynamic processes and interactions at the single NP level, addressing fundamental questions in life sciences, material science and light-matter interactions in general. Furthermore, my opto-fluidic platform supports both fluorescence and scattered light detection, enabling the investigation of NPs that cannot be fluorescently labeled. Notably, it allows for simultaneous measurement of fluorescence and scattered light, unlocking new pathways for exploring NP processes, such as fluorescence quenching.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2024-PF-01

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Coordinator

LEIBNIZ-INSTITUT FUER PHOTONISCHE TECHNOLOGIEN E.V.
Net EU contribution
€ 202 125,12
Address
Albert Einstein strasse 9
07745 Jena
Germany
Region
Thüringen Thüringen Jena, Kreisfreie Stadt
Activity type
Research Organisations
Links
Total cost
No data