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Inside a thin glass cell, liquid crystal material produced shifting stripes that kept cycling through the same pattern while illuminated by steady light.<\/p>\n
Tracking those repeating bands, Hanqing Zhao at the University of Colorado Boulder (CU Boulder<\/a>) documented the motion as a visible form of a time crystal \u2013 a material whose internal pattern repeats in time rather than staying fixed in space.<\/p>\n Unlike earlier demonstrations that could only be inferred through indirect signals, the pattern here remains observable directly under a microscope.<\/p>\n That visibility places the phenomenon within reach of routine experiments and sets up the need to understand how such repeating motion can persist.<\/p>\n Origins of time crystals<\/p>\n Back in 2012, Frank Wilczek<\/a> proposed time crystals as a completely new order. He theorized that ordinary crystals keep the same pattern across space, but time crystals return to the same state from moment to moment.<\/p>\n Wilczek\u2019s original version failed later theoretical tests<\/a>, yet it pushed physicists to hunt for driven and continuous versions.<\/p>\n That history explains why a visible example feels different from earlier demonstrations that had to be inferred indirectly.<\/p>\n Light starts the motion<\/p>\n In the new samples, rod-shaped liquid crystals sat between two dye-coated glass plates. These materials flow yet keep molecular alignment.<\/p>\n Blue light turned the surface dye, and that change squeezed nearby molecules so the layer started reorganizing itself.<\/p>\n As light changed direction inside the cell, feedback built up and spawned thousands of moving kinks across the sample.<\/p>\n \u201cEverything is born out of nothing. All you do is shine a light, and this whole world of time crystals emerges,\u201d said Ivan Smalyukh, a physics professor and Renewable and Sustainable Energy Institute fellow at the University of Colorado Boulder.<\/p>\n Why the pattern lasts<\/p>\n Once the stripes appeared, they did not immediately wash out or freeze, but kept cycling locally for hours.<\/p>\n Temperature changes and shifts in light strength altered the timing only modestly because the interacting kinks kept locking one another in.<\/p>\n The team also found that defects in the pattern could heal, showing a kind of rigidity in both space and time.<\/p>\n That resilience helps explain why the phenomenon looks like an organized phase of matter instead of a fleeting optical effect.<\/p>\n Before this result, most time crystal experiments lived in quantum hardware or ultracold setups that microscopes cannot simply watch.<\/p>\n One well-known milestone used Google\u2019s Sycamore<\/a> processor, where repeated pulses produced the same repeating behavior across dozens of quantum bits.<\/p>\n Another experiment<\/a> reported a continuous version, but that signal still had to be read indirectly.<\/p>\n Comparing the new stripes with those earlier results clarifies the advance: visibility changes how easily scientists can probe and compare the motion.<\/p>\n Why visibility matters<\/p>\n Because direct observation is now possible, researchers can follow timing, defects, and breakdown without translating laser signals first.<\/p>\n \u201cThey can be observed directly under a microscope and even, under special conditions, by the naked eye,\u201d said Hanqing Zhao, then a physics graduate student at the University of Colorado Boulder.<\/p>\n That access could speed basic tests because scientists can tweak the sample and immediately watch the organized motion respond.<\/p>\n It also lowers the barrier for experiments, which may matter if engineers want practical devices rather than rare lab curiosities.<\/p>\n Security in motion<\/p>\n One practical idea uses these moving patterns as a time<\/a> watermark that appears only under the right lighting.<\/p>\n A counterfeit note could copy a still image, but it would struggle to reproduce a pattern that changes in a precise rhythm.<\/p>\n Researchers also sketched stacked versions and fingerprint-like states, suggesting several layers of verification in one design.<\/p>\n That possibility remains speculative for now, but the physics offers a built-in moving feature that ordinary printing cannot mimic easily.<\/p>\n Data through time<\/p>\n Stacking visible patterns lets researchers make a time barcode, where information lives in both the image and its cycle.<\/p>\n That extra time coordinate can raise storage density because the same spot can mean different things at different moments.<\/p>\n Their estimates suggest a two-dimensional barcode extended through time could handle more than 100,000 bits each second.<\/p>\n Turning that idea into a working memory device will require encoding, error control, and materials that stay reliable outside the lab.<\/p>\n Limits of the system<\/p>\n For all its promise, the new system is not a perpetual-motion machine and it does not give energy for free.<\/p>\n Light<\/a> keeps the pattern going by steering surface molecules, while the material simply repeats rather than producing usable work.<\/p>\n Researchers still need to learn how long large devices stay synchronized and how much noise real-world manufacturing would introduce.<\/p>\n Those practical limits separate a beautiful laboratory effect from a product, and they will shape the next round of experiments.<\/p>\n Time crystals and future study<\/p>\n Visible order, self-sustaining motion<\/a>, and unusually stable timing make this material a rare case where an abstract physics idea turns tangible.<\/p>\n Future work will decide whether those moving stripes stay a curiosity or become useful marks, memories, and optical tools.<\/p>\n The full study was published in the journal Nature Materials<\/a>.<\/p>\n \u2014\u2013<\/p>\n Like what you read? Subscribe to our newsletter<\/a> for engaging articles, exclusive content, and the latest updates.<\/p>\n Check us out on EarthSnap<\/a>, a free app brought to you by Eric Ralls<\/a> and Earth.com.<\/p>\n \u2014\u2013<\/p>\n","protected":false},"excerpt":{"rendered":"Scientists have created the first visible time crystal -matter that repeats through time instead of space \u2013 revealing…\n","protected":false},"author":2,"featured_media":472082,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[271],"tags":[18,19,17,452,133],"class_list":{"0":"post-472081","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-physics","8":"tag-eire","9":"tag-ie","10":"tag-ireland","11":"tag-physics","12":"tag-science"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@ie\/116530435698510570","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/posts\/472081","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/comments?post=472081"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/posts\/472081\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/media\/472082"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/media?parent=472081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/categories?post=472081"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/tags?post=472081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"Space-time](\"https:\/\/www.europesays.com\/ie\/wp-content\/uploads\/2026\/05\/time-crystal-experiment-diagram-graphic_Nature-Materials_1s.webp\")
<\/a>Space-time crystals from particle-like topological solitons. Observation of a topological solitonic CSTC in a nematic LC system. (E) Experimental polarizing optical micrograph of the CSTC obtained with a first-order full-wave retardation plate. The plate\u2019s slow axis is labelled by the green double arrow and crossed polarizers are labelled by black double arrows. (F) Space-time image of the CSTC shown in e, where the crystal size is 400\u2009\u03bcm\u2009\u00d7\u2009120\u2009s. Credit: Nature Materials. Click image to enlarge.Beyond the quantum lab<\/p>\n