# Superconducting Vortices Reveal Clogging as a Phase Transition Researchers utilize superconducting vortices to experimentally prove clogging is a nonequilibrium phase transition. - **Source:** [Phys.org - latest science and technology news stories](https://brifing.si/source/8b0f98da-d179-4c93-871f-7ac460bf9c61) - **Published:** 2026-11-11 - **Topic:** [science](https://brifing.si/c/science) - **Original article:** - **On Brifing:** https://brifing.si/s/66411818-bc09-4a99-98ee-bc1430104229 ## Clogging as Phase Transition Clogging occurs when moving particles become trapped, effectively blocking or slowing down fluid systems. While this phenomenon is common in various fields, the exact nature of the transition has lacked experimental validation. Researchers at Science Tokyo have now demonstrated that this process is specifically a nonequilibrium phase transition, providing a new framework. ## Superconducting Vortex Model The team utilized superconducting vortices to model the behavior of particles in a flow. By observing these vortices, they could isolate the mechanics of clogging from other interference patterns. This experimental setup allowed for precise control over the variables, enabling the researchers to observe the transition process in a highly stable environment. ## Two-Step Measurement Protocol To achieve these results, the researchers implemented a specialized two-step measurement protocol. This method was essential to distinguish genuine clogging from conventional pinning, where particles are merely stuck to a surface. By separating these two distinct physical states, the team successfully identified the specific conditions that trigger the onset of clogging. ## Shared Critical Point The study revealed that both clogging and conventional pinning transitions share a common critical point. This discovery is significant because it suggests a unified underlying mechanism for how particles interact within a flow. Identifying this shared point allows scientists to better understand the mathematical boundaries between free flow and complete system blockage. ## Nonequilibrium System Dynamics Because clogging is a nonequilibrium phase transition, it does not follow standard thermodynamic equilibrium rules. Instead, the system is constantly driven by external forces that prevent it from settling into a stable state. Understanding this dynamic is crucial for modeling complex systems where particles are continuously moving through restricted or narrow channels. ## Predicting Flow Blockages The findings offer practical insights into predicting when a system is likely to clog before it actually happens. By monitoring the proximity to the critical point, engineers may be able to adjust flow parameters in real-time. This predictive capability is vital for maintaining efficiency in industrial, biological, and microfluidic transport systems. ## Controlling Particle Transport Beyond prediction, the research provides a basis for controlling clogging in diverse environments. By manipulating the conditions that lead to the phase transition, researchers can potentially keep systems flowing smoothly for longer periods. This control mechanism is applicable to any scenario involving particle movement, from blood flow to industrial pipeline transport. ## Broader Scientific Implications This experimental evidence bridges a gap between theoretical physics and applied fluid dynamics. By framing clogging as a phase transition, the study opens new avenues for research into complex material behaviors. Future studies will likely build on this protocol to explore how different particle types influence the transition across various physical scales. ## Sources covering this story - https://phys.org/news/2026-11-superconducting-vortices-experimental-evidence-clogging.html — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._