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

This week, the Department of Technical Thermodynamics Department at the Technical University of Ilmenau was represented in various ways at the 22nd INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF LASER AND IMAGING TECHNIQUES TO FLUID MECHANICS, held from June 29 to July 2, 2026, in Lisbon. 
The results of the First Defocus Challenge were presented in a talk by Massimiliano Rossi.
(Results of the First Defocus Particle Tracking Challenge by M. Rossi, S. Sachs, and C. Cierpka)
The challenge serves as a benchmark for the development of new algorithms using synthetic images. Direct measurements were performed by 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 (https://lnkd.in/enm85vhG).
The second contribution presented results obtained using Stella (a modular framework for spatio-temporal event-based Lagrangian particle tracking), developed at the Department of Technical Thermodynamics at TU Ilmenau. Event-based cameras show enormous 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 freely available and can be found here: https://lnkd.in/eh-4vaGM. We welcome your feedback.
Last but not least, Christian Cierpka presented 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 its potential can be found here: https://lnkd.in/eeKghGQV.