{"id":962,"date":"2025-11-20T04:19:09","date_gmt":"2025-11-20T04:19:09","guid":{"rendered":"https:\/\/theorylab-sjtu.com\/?p=962"},"modified":"2025-11-20T04:19:10","modified_gmt":"2025-11-20T04:19:10","slug":"new-paper-in-nature-communications-about-the-fluid-viscosity","status":"publish","type":"post","link":"https:\/\/theorylab-sjtu.com\/index.php\/2025\/11\/20\/new-paper-in-nature-communications-about-the-fluid-viscosity\/","title":{"rendered":"New paper in Nature Communications about the fluid viscosity !!"},"content":{"rendered":"\n<p class=\"has-larger-font-size\"><strong>What Really Stops Fluids from Flowing? <\/strong>The atomistic mechanisms behind fluid viscosity<strong><\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"682\" height=\"1024\" src=\"https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/11-682x1024.png\" alt=\"\" class=\"wp-image-964\" style=\"width:342px;height:auto\" srcset=\"https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/11-682x1024.png 682w, https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/11-200x300.png 200w, https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/11.png 705w\" sizes=\"(max-width: 682px) 100vw, 682px\" \/><\/figure><\/div>\n\n\n<p><strong>A visual representation of viscosity and its atomistic origin<\/strong><\/p>\n\n\n\n<p>We\u2019ve all seen it in our kitchens: honey creeps down a spoon in slow motion, while milk pours freely from a jug. The secret behind this difference is something physicists call <strong>viscosity<\/strong>, a fancy word for how much a fluid resists flowing. Thick, sticky liquids like honey have high viscosity because their molecules rub and snag against each other, while runny liquids like water or milk slip past with ease.<\/p>\n\n\n\n<p>Viscosity isn\u2019t just about breakfast ingredients, it matters for how lava flows, how engines are lubricated, and even how glass is made. Yet, despite being everywhere, scientists still don\u2019t fully know what\u2019s happening deep down at the atomic level. What tiny molecular motions create this internal \u201cfriction\u201d? And can we predict how viscous a liquid will be just by looking at how its atoms jiggle around?<\/p>\n\n\n\n<p>These deceptively simple questions have puzzled researchers for more than a century, and they\u2019re still chasing the answer today.<\/p>\n\n\n\n<p>In a recent <em>Nature Communications<\/em> article, Matteo Baggioli (Shanghai Jiao Tong University) together with Yan Feng (Soochow University, Suzhou), Dong Huang (Soochow University, Suzhou), Shaoyu Lu (Soochow University, Suzhou), and Chen Liang (Soochow University, Suzhou), unveiled the atomic-scale dynamics that underpin viscosity in two-dimensional fluids. Building on the idea that viscosity is tied to the average time an atom loses or gains a neighbor, the authors derived a simple analytical formula expressed solely in terms of microscopic quantities.<\/p>\n\n\n\n<p>Remarkably, this prediction matches simulation results across three distinct systems with different interatomic potentials. The derived expression establishes a direct bridge between macroscopic flow at large scales and the microscopic dynamics of individual atoms. It also offers a precise definition of the characteristic timescale for atomic rearrangements in liquids, thus identifying the length scale below which liquids retain elastic behavior.<\/p>\n\n\n\n<p>In essence, this study reveals how friction in fluids emerges from atomic motion, shedding light on fundamental mechanisms while opening a pathway for predictive modeling and potential control of viscosity.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"684\" src=\"https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/12-1024x684.png\" alt=\"\" class=\"wp-image-965\" srcset=\"https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/12-1024x684.png 1024w, https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/12-300x200.png 300w, https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/12-768x513.png 768w, https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/12-1536x1026.png 1536w, https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/12-1200x802.png 1200w, https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/12.png 1599w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>This study reveals that viscosity is governed at the microscopic level by the atomic mechanism of losing or gaining neighbors<\/strong><\/p>\n\n\n\n<p>This work is published in <em>Nat Commun<\/em>&nbsp;<strong>16<\/strong>, 10171 (2025): <a href=\"https:\/\/www.nature.com\/articles\/s41467-025-65246-5\">Atomistic mechanisms of viscosity in 2D liquid-like fluids | Nature Communications<\/a><\/p>\n\n\n\n<p>A <code>Behind the Paper<\/code> article is also available at <a href=\"https:\/\/communities.springernature.com\/posts\/when-fluids-race-why-honey-crawls-and-water-runs\">When Fluids Race: Why Honey Crawls and Water Runs | Research Communities by Springer Nature<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Really Stops Fluids from Flowing? The atomistic mechanisms behind fluid viscosity A visual representation of viscosity and its atomistic origin We\u2019ve all seen it in our kitchens: honey creeps down a spoon in slow motion, while milk pours freely from a jug. The secret behind this difference is something physicists call viscosity, a fancy [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[3],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>New paper in Nature Communications about the fluid viscosity !! - TheoryLab<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/theorylab-sjtu.com\/index.php\/2025\/11\/20\/new-paper-in-nature-communications-about-the-fluid-viscosity\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"New paper in Nature Communications about the fluid viscosity !! - TheoryLab\" \/>\n<meta property=\"og:description\" content=\"What Really Stops Fluids from Flowing? The atomistic mechanisms behind fluid viscosity A visual representation of viscosity and its atomistic origin We\u2019ve all seen it in our kitchens: honey creeps down a spoon in slow motion, while milk pours freely from a jug. The secret behind this difference is something physicists call viscosity, a fancy [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/theorylab-sjtu.com\/index.php\/2025\/11\/20\/new-paper-in-nature-communications-about-the-fluid-viscosity\/\" \/>\n<meta property=\"og:site_name\" content=\"TheoryLab\" \/>\n<meta property=\"article:published_time\" content=\"2025-11-20T04:19:09+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-20T04:19:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/11-682x1024.png\" \/>\n<meta name=\"author\" content=\"Matteo Baggioli\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Matteo Baggioli\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/theorylab-sjtu.com\/index.php\/2025\/11\/20\/new-paper-in-nature-communications-about-the-fluid-viscosity\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/theorylab-sjtu.com\/index.php\/2025\/11\/20\/new-paper-in-nature-communications-about-the-fluid-viscosity\/\"},\"author\":{\"name\":\"Matteo Baggioli\",\"@id\":\"https:\/\/theorylab-sjtu.com\/#\/schema\/person\/7614fab82233e5bf9dcc437cd0913eb9\"},\"headline\":\"New paper in Nature Communications about the fluid viscosity !!\",\"datePublished\":\"2025-11-20T04:19:09+00:00\",\"dateModified\":\"2025-11-20T04:19:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/theorylab-sjtu.com\/index.php\/2025\/11\/20\/new-paper-in-nature-communications-about-the-fluid-viscosity\/\"},\"wordCount\":416,\"publisher\":{\"@id\":\"https:\/\/theorylab-sjtu.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/theorylab-sjtu.com\/index.php\/2025\/11\/20\/new-paper-in-nature-communications-about-the-fluid-viscosity\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/theorylab-sjtu.com\/wp-content\/uploads\/2025\/11\/11-682x1024.png\",\"articleSection\":[\"News\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/theorylab-sjtu.com\/index.php\/2025\/11\/20\/new-paper-in-nature-communications-about-the-fluid-viscosity\/\",\"url\":\"https:\/\/theorylab-sjtu.com\/index.php\/2025\/11\/20\/new-paper-in-nature-communications-about-the-fluid-viscosity\/\",\"name\":\"New paper in Nature Communications about the fluid viscosity !! 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