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American Focus > Blog > Tech and Science > This Bizarre Shape-Shifting Liquid Bends The Laws of Thermodynamics : ScienceAlert
Tech and Science

This Bizarre Shape-Shifting Liquid Bends The Laws of Thermodynamics : ScienceAlert

Last updated: April 9, 2025 6:49 pm
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This Bizarre Shape-Shifting Liquid Bends The Laws of Thermodynamics : ScienceAlert
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Chemical engineers at the University of Massachusetts Amherst recently made a fascinating discovery involving a container of oil and water separated by a thin skin of magnetized particles. Upon agitation, the mixture took on an unexpected ‘Grecian urn’ shape, sparking curiosity and intrigue among the researchers.

Graduate student Anthony Raykh recalled his initial reaction to the phenomenon, stating, “I thought ‘what is this thing?'”. After mixing the materials with intriguing properties, he sought answers from his professors in the Polymer Science and Engineering Department.

Further analysis revealed that interactions between the tiny magnetic beads and the surface tension between the immiscible liquids played a crucial role in shaping the mixture in ways that defied traditional thermodynamic principles. The addition of magnetism introduced a unique dynamic to the system, leading to the formation of the distinctive urn shape.

While the practical applications of this discovery remain unclear at present, the researchers believe that the unusual shape and behavior of the mixture in response to an external magnetic field could hold potential for future advancements in emulsion technology. By understanding and manipulating the structural properties of emulsions, engineers may uncover new possibilities for various industries.

Oil and water are known to separate due to their differing properties, but emulsifiers like lecithin can help create stable mixtures by forming a thin skin between the two phases. Pickering emulsions, which involve breaking at least one fluid into tiny bubbles dispersed through the other, offer a method of stabilizing mixtures for improved consistency.

In the laboratory experiment conducted by Raykh and his team, a Pickering emulsion was created using tap water, a slightly polar organic solvent, and magnetized nickel particles. Despite the expected homogeneity of the mixture, the magnetic particles formed a branching web under tension, resulting in a lopsided hourglass-like shape instead.

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Microscopic examination and computer simulations elucidated the complex magnetic interactions at play, preventing traditional emulsification from occurring. By applying a magnet, the researchers were able to modify the shape of the mixture, showcasing the influence of magnetism on its structural properties.

Polymer scientist David Hoagland emphasized the significance of studying the assembly of magnetized nanoparticles and its impact on emulsification processes. The researchers’ findings were published in the prestigious journal Nature Physics, shedding light on a novel phenomenon at the intersection of magnetism and thermodynamics.

This groundbreaking research opens up new avenues for exploring the behavior of emulsions under magnetic influence, offering potential insights for future advancements in materials science and engineering. Stay tuned for further developments in this exciting field of study.

TAGGED:bendsBizarreLawsliquidScienceAlertshapeshiftingThermodynamics
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