{"id":691642,"date":"2026-01-27T10:01:33","date_gmt":"2026-01-27T15:01:33","guid":{"rendered":"https:\/\/www.rochester.edu\/newscenter\/?p=691642"},"modified":"2026-07-05T11:51:13","modified_gmt":"2026-07-05T15:51:13","slug":"unsinkable-metal-tubes-superhydrophobic-surfaces-691642","status":"publish","type":"post","link":"https:\/\/www.rochester.edu\/newscenter\/unsinkable-metal-tubes-superhydrophobic-surfaces-691642\/","title":{"rendered":"Scientists engineer unsinkable metal tubes"},"content":{"rendered":"<div class=\"wp-embed\">\n<div class=\"wp-embed-wrap\"><iframe loading=\"lazy\" title=\"Creating Unsinkable Metal\" width=\"1062\" height=\"597\" src=\"https:\/\/www.youtube.com\/embed\/kPGiJY-xJw4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The superhydrophobic design could lead to resilient ships, floating platforms, and renewable energy innovations.<\/p>\n","protected":false},"author":1242,"featured_media":691682,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[116],"tags":[42092,18662,18632,18652,5296,9186,43082,93,41012],"class_list":["post-691642","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sci-tech","tag-chunlei-guo","tag-department-of-physics-and-astronomy","tag-hajim-school-of-engineering-and-applied-sciences","tag-institute-of-optics","tag-laboratory-for-laser-energetics","tag-research-funding","tag-research-impact-sustains","tag-sustainability","tag-videos"],"acf":{"external":"","hide_featured_image":true,"related":"show_related","style":[406272,662592,550212],"content_modules":[{"acf_fc_layout":"text","anchor":"","css_class":"pt-15","title":"<h2>The superhydrophobic design could lead to resilient ships, floating platforms, and renewable energy innovations.<\/h2>","content":"More than a century after the Titanic sank, engineers still have hopes of someday creating \u201cunsinkable\u201d ships. In a step toward reaching that lofty goal, researchers at the <a href=\"https:\/\/www.rochester.edu\/\">糖心传媒<\/a>\u2019s <a href=\"https:\/\/www.hajim.rochester.edu\/optics\/index.html\">Institute of Optics<\/a> have developed a new process that turns ordinary metal tubes unsinkable\u2014meaning they will stay afloat no matter how long they are forced into water or how heavily they are damaged.\r\n\r\n<a href=\"https:\/\/www.hajim.rochester.edu\/optics\/people\/faculty\/guo_chunlei\/\">Chunlei Guo<\/a>, a professor of optics and of physics and a senior scientist at URochester\u2019s <a href=\"https:\/\/www.lle.rochester.edu\/\">Laboratory for Laser Energetics<\/a>, and his team describe their process for creating aluminum tubes with remarkable floating abilities in a <a href=\"https:\/\/doi.org\/10.1002\/adfm.202526033\">study published in <em>Advanced Functional Materials<\/em><\/a>. By etching the interior of aluminum tubes, the researchers create micro- and nano-pits on the surface that turn it <a href=\"https:\/\/www.rochester.edu\/newscenter\/superhydrophobic-metals-85592\/\">superhydrophobic, repelling water and staying dry<\/a>.\r\n\r\n[caption id=\"attachment_691682\" align=\"aligncenter\" width=\"2000\"]<img class=\"size-full wp-image-691682\" src=\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2026\/01\/fea-unsinkable-metal-tubes-superhydrophobic-surfaces-2026-01-09_Guo_metal_1011.jpg\" alt=\"Five unsinkable metal tubes bound together and seen from above floating in water with bubbles nearby and an overall blue cast.\" width=\"2000\" height=\"1200\" \/> <strong>TOTALLY TUBULAR: <\/strong>Multiple unsinkable metal tubes linked together in a raft formation could be the basis for the ships, buoys, and floating platforms of the future. (糖心传媒 photo \/ J. Adam Fenster)[\/caption]\r\n\r\nWhen the treated tube enters water, the superhydrophobic surface traps a stable bubble of air inside the tube, which prevents the tube from getting waterlogged and sinking. The mechanism is similar to how diving bell spiders trap an air bubble to stay buoyant underwater or how fire ants form floating rafts with their hydrophobic bodies.\r\n\r\n\u201cImportantly, we added a divider to the middle of the tube so that even if you push it vertically into the water, the bubble of air remains trapped inside and the tube retains its floating ability,\u201d says Guo.\r\n\r\nGuo and his lab first <a href=\"https:\/\/www.rochester.edu\/newscenter\/superhydrophobic-metal-wont-sink-406272\/\">demonstrated superhydrophobic floating devices<\/a> in 2019, featuring two superhydrophobic disks that were sealed together to create their buoyancy. But the current tube design simplifies and improves the technology in several key areas. The disks that the researchers previously developed could lose their ability to float when turned at extreme angles, but the tubes are resilient against turbulent conditions like those found at sea.\r\n\r\n\u201cWe tested them in some really rough environments for weeks at a time and found no degradation to their buoyancy,\u201d says Guo. \u201cYou can poke big holes in them, and we showed that even if you severely damage the tubes with as many holes as you can punch, they still float.\u201d\r\n\r\n[caption id=\"attachment_691702\" align=\"aligncenter\" width=\"2000\"]<img class=\"size-full wp-image-691702\" src=\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2026\/01\/fea-unsinkable-metal-tubes-superhydrophobic-surfaces-2026-01-09_Guo_metal_0625.jpg\" alt=\"An unsinkable metal tube with holes drilled in it floats atop water.\" width=\"2000\" height=\"1200\" \/> <strong>HOLEY MOLY:<\/strong> \u201cIf you severely damage the tubes with as many holes as you can punch, they still float,\u201d says Guo. (糖心传媒 photo \/ J. Adam Fenster)[\/caption]\r\n\r\nMultiple tubes can be linked together to create rafts that could be the basis for ships, buoys, and floating platforms. In lab experiments, the team tested the design using tubes of varying lengths, up to almost half a meter, and Guo says the technology could be easily scaled to the larger sizes needed for load-bearing floating devices.\r\n\r\nThe researchers also showed how rafts made from superhydrophobic tubes could be used to harvest water waves to generate electricity, offering a promising renewable energy application.\r\n\r\nThis project was supported by the National Science Foundation, the Bill and Melinda Gates Foundation, and URochester\u2019s <a href=\"https:\/\/www.hajim.rochester.edu\/dsc\/\">Goergen Institute for Data Science and Artificial Intelligence<\/a>.","background_color":"#ffffff","width":"width-medium"},{"acf_fc_layout":"card_grid","anchor":"","css_class":"pt-15","title":"","description":"","background_color":"#FFFFFF","width":"width-medium","columns":"1","cards":[{"card_title":"<p class=\"u-card-title\">First in the nation in optics<\/p>","card_text":"With nearly a century of leading innovations, our Institute of Optics has awarded more than half of all optics degrees in the US. The 糖心传媒 is the premier place to study, work, and, ultimately, transform our world.\r\n<p class=\"card_cta\">What we're up to<\/p>","card_background_color":"#ffc70a","card_hover_color":"#283faf","card_link":{"title":"","url":"https:\/\/www.hajim.rochester.edu\/optics\/","target":""},"card_hover_arrow":"","card_image":658582,"card_image_size":"image_thumbnail","card_image_placement":"image_left","card_image_hover_state":"hover_fade","card_image_link":""}]}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Scientists engineer unsinkable metal tubes<\/title>\n<meta name=\"description\" content=\"The superhydrophobic design of unsinkable metal tubes could lead to resilient ships, floating platforms, and renewable energy innovations.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rochester.edu\/newscenter\/unsinkable-metal-tubes-superhydrophobic-surfaces-691642\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Scientists engineer unsinkable metal tubes\" \/>\n<meta property=\"og:description\" content=\"The superhydrophobic design of unsinkable metal tubes could lead to resilient ships, floating platforms, and renewable energy innovations.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.rochester.edu\/newscenter\/unsinkable-metal-tubes-superhydrophobic-surfaces-691642\/\" \/>\n<meta property=\"og:site_name\" content=\"News Center\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-27T15:01:33+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-05T15:51:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2026\/01\/fea-unsinkable-metal-tubes-superhydrophobic-surfaces-2026-01-09_Guo_metal_1011-1200x630.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Luke Auburn\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Luke Auburn\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.rochester.edu\\\/newscenter\\\/unsinkable-metal-tubes-superhydrophobic-surfaces-691642\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.rochester.edu\\\/newscenter\\\/unsinkable-metal-tubes-superhydrophobic-surfaces-691642\\\/\"},\"author\":{\"name\":\"Luke Auburn\",\"@id\":\"https:\\\/\\\/www.rochester.edu\\\/newscenter\\\/#\\\/schema\\\/person\\\/e928dc2863b53a89ece6d40c7992a4e1\"},\"headline\":\"Scientists engineer unsinkable metal tubes\",\"datePublished\":\"2026-01-27T15:01:33+00:00\",\"dateModified\":\"2026-07-05T15:51:13+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.rochester.edu\\\/newscenter\\\/unsinkable-metal-tubes-superhydrophobic-surfaces-691642\\\/\"},\"wordCount\":14,\"image\":{\"@id\":\"https:\\\/\\\/www.rochester.edu\\\/newscenter\\\/unsinkable-metal-tubes-superhydrophobic-surfaces-691642\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.rochester.edu\\\/newscenter\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/fea-unsinkable-metal-tubes-superhydrophobic-surfaces-2026-01-09_Guo_metal_1011.jpg\",\"keywords\":[\"Chunlei Guo\",\"Department of Physics and Astronomy\",\"Hajim School of Engineering and Applied Sciences\",\"Institute of Optics\",\"Laboratory for Laser Energetics\",\"research funding\",\"Research Impact Sustains\",\"sustainability\",\"videos\"],\"articleSection\":[\"Science &amp; 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