Out-of-plane ice bridges reveal new way to suppress frost spreading

A research team led by Professor Nenad Miljkovic in The Grainger College of Engineering at the University of Illinois Urbana-Champaign has published a breakthrough study in Nature Physics. The science-journalism coverage adds useful context, while the strongest evidential footing still comes from the underlying data, papers or institutional documentation.

That matters because cosmology operates at the edge of what current instruments can measure, where systematic errors and model assumptions are never trivial. Small discrepancies between independent measurements have historically pointed toward missing physics rather than simple calibration errors, and the ongoing tension in the Hubble constant is a live example of how a persistent disagreement between methods can reshape the theoretical landscape. Each new dataset that approaches this territory with independent systematics adds real information to a problem that has resisted easy resolution for more than a decade. By University of Illinois Grainger College of Engineering This article has been reviewed according to Science X's editorial process and policies. The Grainger College of Engineering at the University of Illinois Urbana-Champaign A research team led by Professor Nenad Miljkovic in The Grainger College of Engineering at the.

The work reports the first experimental discovery of a previously unknown frost propagation mechanism, a "suspended ice bridge"—offering new pathways for anti-frosting surface. By systematically analyzing surfaces with varying contact angles, the researchers identified a critical threshold for water droplet apparent contact angle of approximately 105.

This finding reveals that wettability not only influences droplet distribution and spacing, as previously known, but also fundamentally determines the three-dimensional growth. Experiments demonstrate a reduction in frost spreading speed by over 80%, highlighting the effectiveness of this newly identified mechanism.

Discover the latest in science, tech, and space with over 100, 000 subscribers who rely on Phys. org for daily insights. The results show that surfaces promoting suspended ice bridges can significantly delay frost formation, slow frost propagation, and prolong efficient heat transfer operation.

The relevance goes beyond one dataset because even small shifts in measured parameters can matter when the field is testing the limits of the standard cosmological model. The Lambda-CDM framework describes the observable universe with remarkable economy, but its success rests on two components, dark matter and dark energy, whose physical nature remains entirely unknown. Any credible measurement that tightens or loosens the constraints on those components moves the entire theoretical enterprise forward, regardless of whether the immediate result looks dramatic on its own terms.

This work establishes a clear link between microscopic ice bridge behavior and macroscopic system performance, providing a new framework for anti-frosting design in energy systems. The discovery of suspended ice bridges challenges the conventional two-dimensional perspective of frost propagation and introduces a new three-dimensional understanding of.

Because this item comes through Phys. org Physics as science journalism, it should be treated as contextual reporting rather than primary evidence. Good science reporting can identify why a result matters, connect it to the wider literature and make technical work readable, but the decisive evidence remains in the original paper, dataset, mission release or technical record. That distinction is especially important when a story is later repeated by aggregators, because repetition increases visibility, not evidential strength.

The next step is to see whether the effect survives when independent surveys, different calibration strategies and tighter control of systematic uncertainties enter the picture. Programmes such as Euclid, DESI and the Rubin Observatory will deliver datasets over the next several years that cover the same parameter space with largely independent methods. If the current signal persists through those tests, its theoretical implications will become impossible to set aside.

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