Bokic, B.

Kolaric, Branko

Pagnacco, M.

Radulovic, A.

Simovic Pavlovic, M.

Vasiljevic, D.

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Introduction:In this study, the interferometric (holographic) approach is used to unveil the dynamics of the phasetransition, e.g., the formation of solid iodine in the Briggs-Rauscher (BR) non-equilibrium system.Subsequently, after deterministic oscillatory dynamics this system undergoes random transition from stateI (low iodide and iodine concentration) to state II (high iodide and iodine concentration, with theformation of solid iodine).Conclusion:The power of holography is related to its ability tosee the rise of the phase transition directly. At thesame time, other methods, such aspotentiometry (often used in non-equilibriumstudies), are limited by secondary processes suchas adsorption and electrode passivation. Theholography opens the way to reveal nanoscaledynamics with minimal disturbances in variousnon-equilibrium systems.References:[1] Pagnacco, Maja C., et al. "Transition from Low to high iodide and iodine concentration states in the Briggs–Rauscher reaction: evidence on crazy clock behavior." J. Phys. Chem. A  2018, 122.2, 482-491.[2] Simovic-Pavlovic, M., Pagnacco, M.C., Grujic, D., Bokic, B., Vasiljevic, D., Mouchet, S., Verbiest, T., Kolaric, B. Uncovering Hidden Dynamics of Natural Photonic Structures using Holographic Imaging. J. Vis. Exp. 2022, e63676.(3) Pagnacco, Maja C., et al. “Stochastic Phase Transition Dynamics in Nonequilibrium System: Holographic Study" J. Phys. Chem. C  2023.REVEALING NON-EQUILIBRIUM DYNAMICS BY HOLOGRAPHY: THE CASE OF BRIGGS-RAUSCHER REACTIONMaja Pagnacco1, Marina Simovic Pavlovic2, Aleksandra Radulovic3, Bojana Bokic4, Darko Vasiljevic4, Branko Kolaric4,51 University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Njegoseva 12, Belgrade, Serbia2 University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, Belgrade, Serbia3 University of Belgrade, Institute of General and Physical Chemistry, Studentski trg 12/V, Belgrade, Serbia4 University of Belgrade, Institute of Physics, Photonics Center, Pregrevica 118, Belgrade, Serbia5 Micro- and Nanophotonic Materials Group, University of Mons, Place du Parc 20, 7000 Mons, Belgiume-mail: simovicmarina99@gmail.comAcknowledgement:All authors acknowledge thesupport of the Office of NavalResearch Global through theResearch Grant N62902-22-1-2024.Experimental:The observed interferometric pattern of dark and bright lines known as fringes is applied to monitor the changes in BR dynamics as a function of time. The pattern abruptly changes at the point of the phase transition.

Revealing non-equilibrium dynamics by holography: The case of Briggs- Rauscher reaction

https://orbi.umons.ac.be/bitstream/20.500.12907/48434/1/Marina_Simovic_Pavlovic_poster.pdf

Revealing non-equilibrium dynamics by holography: The case of Briggs- Rauscher reaction

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