{"id":17814,"date":"2018-10-26T21:36:55","date_gmt":"2018-10-26T21:36:55","guid":{"rendered":"https:\/\/one.sightlinemg.com\/c4isrnet\/uncategorized\/2018\/10\/26\/researchers-inchina-and-australia-make-a-liquid-metal-wheel-robot\/"},"modified":"2026-08-08T18:01:58","modified_gmt":"2026-08-08T18:01:58","slug":"researchers-inchina-and-australia-make-a-liquid-metal-wheel-robot","status":"publish","type":"post","link":"https:\/\/one.sightlinemg.com\/c4isrnet\/unmanned\/2018\/10\/26\/researchers-inchina-and-australia-make-a-liquid-metal-wheel-robot\/","title":{"rendered":"Researchers in China and Australia want to reinvent the wheel"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Robots are not bound to the same familiar forms. Without needing to protect a soft, fleshy core, machines can be built at new scales and with strange locomotion, all in service of a strange body. Consider, then, the latest in soft robotics from China\u2019s University of Science and Technology and Australia\u2019s University of Wollongong: a miniature wheel, driven by sending electricity through a blob of liquid metal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">While the story is drawing comparisons to the unforgettable liquid-metal robot played by Robert Patrick in \u201cTerminator 2: Judgment Day,\u201d a comparison in no small part urged along by the University of Science and Technology <a href=\"http:\/\/en.ustc.edu.cn\/2018\/1024\/c15527a343449\/page.htm\" target=_blank>official write-up<\/a>, the machine in question is far more interesting and far less fantastical than portrayed. The researcher, published in Advanced Materials, is more modest in the title: \u201c<a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/adma.201805039\" target=_blank>A Wheeled Robot Driven by a Liquid\u2010Metal Droplet<\/a>.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here\u2019s how the robot works: a droplet of liquid gallium alloy is placed inside a small wheel, and on top of it sits a specially 3D-printed bracket containing a cathode and anode. Altogether, this makes up the robot. When voltage is run through the liquid metal droplet, it changes the robot\u2019s center of gravity, so the robot rolls forward steadily. According to the researchers, this can work untethered using a tiny cylindrical lithium battery, with the robot rolling on a flat surface.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Plenty of wheeled vehicles already exist, but few of them work on such a small scale, or with such a narrow frontage, which is what\u2019s so compelling about this tiny machine (well, besides the fact that it\u2019s a liquid-metal powered robot). Everything interesting comes from adding sensors to the body, but imagine what a tiny machine like this could do with even the simple addition of a microphone and a transmitter.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Slide it through a narrow crack, and the robot could roll into place, a listening device drawing power from the same small battery that enables locomotion. Keep the robots small enough, and they could fit into pouches and pockets, rolled through underbrush or down side streets, small enough to escape notice.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This rolling liquid-metal drone is no Terminator, but it could be a useful pocket-sized scout in the future.<\/p>\n","protected":false},"author":7,"featured_media":55139,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_yoast_wpseo_meta-robots-noindex":"","_yoast_wpseo_meta-robots-nofollow":"","_yoast_wpseo_canonical":"","_acf":"","_yoast_wpseo_primary_category":21,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","_smg_distribution_targets":{"10":{"categories":["unmanned","daily-news-roundup","newsletters"],"primary_category":"unmanned"}}},"categories":[106,29,32,56,21,111],"tags":[],"coauthors":[3021],"class_list":["post-17814","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-daily-brief","category-home","category-newsletters","category-robotics","category-unmanned","category-unmanned-systems"],"acf":{"subheadline":"","legacy_arc_id":"AAVF3ZW6VJENZP43PV5SPG7WGY","arc_canonical_url":"\/unmanned\/2018\/10\/26\/researchers-inchina-and-australia-make-a-liquid-metal-wheel-robot\/","remove_feature_photo":false,"is_sponsored":false,"subtype":"","redirect_url":"","disable_inline_ads":false,"native_logo_pretext":"Presented By:"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.0 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Researchers in China and Australia want to reinvent the wheel - C4ISRNet<\/title>\n<meta name=\"description\" content=\"This rolling liquid-metal drone is no Terminator, but it could be a useful pocket-sized scout in the future.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Researchers in China and Australia want to reinvent the wheel\" \/>\n<meta property=\"og:description\" content=\"This rolling liquid-metal drone is no Terminator, but it could be a useful pocket-sized scout in the future.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/one.sightlinemg.com\/c4isrnet\/unmanned\/2018\/10\/26\/researchers-inchina-and-australia-make-a-liquid-metal-wheel-robot\/\" \/>\n<meta property=\"og:site_name\" content=\"C4ISRNet\" \/>\n<meta property=\"article:published_time\" content=\"2018-10-26T21:36:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-08T18:01:58+00:00\" \/>\n<meta name=\"author\" content=\"Kelsey D. Atherton\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kelsey D. 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