22nd INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF LASER AND IMAGING TECHNIQUES TO FLUID MECHANICS

This week the Technische Thermodynamik - Fachgebiet der TU Ilmenau was present in different ways on the 22nd INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF LASER AND IMAGING TECHNIQUES TO FLUID MECHANICS held from 29 June - 2 July 2026 in Lisbon. 
The results of the First Defocus challenge have been presented in a Talk of Massimiliano Rossi. 
(Results of the First Defocus Particle Tracking Challenge M. Rossi S. Sachs an C. Cierpka)
The challenge serves as a benchmark for new development of algorithms on synthetic images. Direct measurements were performed by the international teams using the microchannel fabricated with a dry film resist technique at ZMN @ TU Ilmenau. The challenge is still available, feel free to test your code or experimental setup on this benchmark (Defocus Challenge | Technische Universität Ilmenau).
The second contribution were results obtained with the help of Stella (A modular framework for SpatioTemporal Event-based Lagrangian particLe trAcking) developed at Technische Thermodynamik - Fachgebiet der TU Ilmenau. Event-based cameras show a huge potential for turbulent flows and Chris Willert presented results obtained in the largest pipe flow experiment CICLoPE at Alma Mater Studiorum - Università di Bologna.
(Event-based 3d-Lagrangian Particle Tracking using Different Processing Strategies, C. Willert, S. Sachs, D. Schanz, C. Cierpka, M. Rossi, G. Bellani)
The toolbox is openly available and can be found here: GitHub - sesa1504/STELLA: STELLA - a modular framework for statiotemporal event-based Lagrangian particle tracking · GitHub We are happy to get your feedback.
Last but not least Christian Cierpka presented the birefringent particle tracking velocimetry, a versatile measurement technique for 3D3C multimodal measurements in microfluidics.
(Seeing double and benefiting from it - An easy way to perform 3D particle tracking, sizing and temperature measurements in microfluidics by C. Cierpka and J. König)
More information on the potential can be found here Double refractive particle tracking and sizing | Experiments in Fluids | Springer Nature Link