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Refractive Index Observer

Project description

Add-on microscopy device for microscale chemical gradient mapping via local refractive index measurements

The study of microscale chemical gradients is fundamental to advancements in a diverse array of scientific disciplines, including materials science, chemical engineering, and the life sciences. However, research is hindered by current measurement methods that rely on fluorophores or dyes. These alter system properties and offer only indirect insights. In this context, the ERC-funded RIO project aims to develop an add-on device for optical microscopes. Called the Refractive Index Observer, it will enable label-free, high-resolution characterisation of microscale chemical gradients without current constraints. The project will develop the required parts and technologies, optimise the software and control systems, conduct tests, and improve the accuracy and efficiency.

Objective

Microscale chemical gradients are essential in life sciences, materials science, and chemical processes, yet existing measurement methods rely on fluorophores or dyes that inherently alter system properties and provide only indirect insights.

With this PoC, we aim to revolutionize their quantification by further developing and ultimately commercializing RIO - the Refractive Index Observer - an add-on device for optical microscopes that enables label-free, high-resolution characterization of chemical gradients at the microscale.

The technology uses Fabry-Pérot interferometry to obtain time-resolved two-dimensional (2D) refractive index (RI) maps at the microscale and convert this information into chemical gradient mapping. With a resolution of at least 2x10-5 RI units, RIO is comparable to a benchtop refractometer for bulk samples but with the spatial resolution of a typical optical microscope and a 10-millisecond time resolution. RIO is born out of the ERC CoG “ACTIVE_ADAPTIVE” as a tool to measure chemical gradients in active matter systems. We have already patented the technology, which is at TRL4. With this PoC we aim at taking RIO to TRL6/7 and lay the groundwork for its commercialization by:

1. Developing the current hardware to (i) push the time resolution to sub-millisecond while maintaining the highest RI resolution and (ii) create a palette of customized interferometric microfluidic chips to cover a broad range of application fields.
2. Advancing the control system and software via a robust, professional and intuitive graphical user interface (GUI).
3. Conducting a techno-economic assessment of the technology alongside a product-market fit evaluation.
4. Carrying out user testing and fundraising for pre-commercialization.

If successfully implemented, RIO has the potential to disrupt the way microscopy is performed on liquid samples across a wide range of disciplines, including electrochemistry, microrobotics, cell biology, and materials science.

Fields of science (EuroSciVoc)

Programme(s)

Topic(s)

Funding Scheme

HORIZON-ERC-POC - HORIZON ERC Proof of Concept Grants

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Call for proposal

(opens in new window) ERC-2025-POC

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Host institution

EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH
Net EU contribution
€ 150 000,00
Address
Raemistrasse 101
8092 Zuerich
Switzerland
Region
Schweiz/Suisse/Svizzera Zürich Zürich
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data

Beneficiaries (1)