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Furthermore, we analyze the probability distribution of Voronoi cell volumes and contrast the Voronoi volume of individual particles with the system\u2019s average volume. Finally, we identify universal properties in the behavior of supercritical fluids for the Lennard-Jones system, methanol, and water.<\/jats:p>","DOI":"10.1063\/5.0298557","type":"journal-article","created":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T12:04:04Z","timestamp":1762171444000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":2,"title":["The Widom line in two- and three-dimensional fluids: Similarities and differences"],"prefix":"10.1063","volume":"163","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8344-4533","authenticated-orcid":false,"given":"Yu. 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