Microfluidic flow cytometry

Microfluidic flow cytometry at Fraunhofer IMM is an advanced, miniaturized and automated version of traditional flow cytometry that integrates fluidics and optical modules on microchips. It allows quantitative, multiparametric analysis of cells or particles in very small sample volumes with compact, modular hardware suited for integration into larger systems.

Flow cytometry is a gold-standard method for analyzing cell populations—used in research, diagnostics, and bioprocess monitoring—because it delivers single-cell data on size, fluorescence, and other characteristics. By miniaturizing and automating this technology with microfluidics, Fraunhofer IMM significantly reduces sample and reagent use, accelerates workflows, and enables decentralized and inline deployment, which is particularly valuable for scarce clinical materials, in-process quality control, and point-of-need applications.

Cells or particles are guided through microfluidic channels where optical detection captures parameters such as size and fluorescence. Short diffusion paths allow fast on-chip staining and washing, while gentle flow conditions preserve cell integrity. Modular optics and fluidics support automation and system integration.

The technology has demonstrated high sensitivity and reproducibility across applications including diagnostics, biological research, microbial analysis, and process monitoring. Reduced consumable use and increased sampling frequency validate its suitability for real-world and industrial environments.

Further development focuses on deeper system integration, increased automation, and deployment outside traditional laboratories, enabling inline and point-of-need flow cytometry for diagnostics and industrial quality control.