{"id":274060,"date":"2026-01-08T12:33:09","date_gmt":"2026-01-08T12:33:09","guid":{"rendered":"https:\/\/www.europesays.com\/ie\/274060\/"},"modified":"2026-01-08T12:33:09","modified_gmt":"2026-01-08T12:33:09","slug":"kaist-researchers-develop-direct-printing-of-nanolasers-for-optical-computing-and-quantum-security","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/ie\/274060\/","title":{"rendered":"KAIST Researchers Develop Direct Printing of Nanolasers for Optical Computing and Quantum Security\u200b"},"content":{"rendered":"<p><strong>Insider Brief<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li>KAIST and POSTECH researchers said they developed an ultra-fine electrohydrodynamic 3D printing method that enables vertical nanolasers to be printed directly onto semiconductor chips, allowing much higher device density than conventional lithography-based approaches.<\/li>\n<li>The team reported that by vertically stacking perovskite nanostructures with near single-crystal quality, the lasers achieved higher efficiency and lower optical loss, with emission wavelengths tunable by adjusting nanostructure height, enabling applications from optical computing to anti-counterfeiting.<\/li>\n<li>The study, published Dec. 6, 2025, in ACS Nano, was supported by South Korea\u2019s Ministry of Science and ICT and related research programs, and positions vertical nanolasers as potential building blocks for optical computing, quantum communication, and advanced AR displays.<\/li>\n<\/ul>\n<p>PRESS RELEASE \u2014 In future high-tech industries, such as high-speed optical computing for massive AI, <a href=\"https:\/\/thequantuminsider.com\/?s=+quantum+cryptographic+communication&amp;id=2367594&amp;post_type=post\" rel=\"nofollow noopener\" target=\"_blank\">quantum cryptographic communication<\/a>, and ultra-high-resolution augmented reality (AR) displays, nanolasers\u2014which process information using light\u2014are gaining significant attention as core components for next-generation semiconductors. A research team at our university has proposed a new manufacturing technology capable of high-density placement of nanolasers on semiconductor chips, which process information in spaces thinner than a human hair.<\/p>\n<p><a href=\"https:\/\/www.eurekalert.org\/news-releases\/1111618\" rel=\"nofollow noopener\" target=\"_blank\">KAIST announced on January 6th<\/a> that a joint research team, led by\u00a0Professor Ji Tae Kim\u00a0from the Department of Mechanical Engineering and\u00a0Professor Junsuk Rho\u00a0from POSTECH (President Seong-keun Kim), has developed an\u00a0ultra-fine 3D printing technology\u00a0capable of creating\u00a0\u201cvertical nanolasers,\u201d\u00a0a key component for ultra-high-density optical integrated circuits.<\/p>\n<p>Conventional semiconductor manufacturing methods, such as lithography, are effective for mass-producing identical structures but face limitations: the processes are complex and costly, making it difficult to freely change the shape or position of devices. Furthermore, most existing lasers are built as horizontal structures lying flat on a substrate, which consumes significant space and suffers from reduced efficiency due to light leakage into the substrate.<\/p>\n<p><a href=\"https:\/\/thequantuminsider.com\/data\/\" onclick=\"_gs(&#039;event&#039;, &#039;DATA IN CONTENT NEW&#039;)\" class=\"responsive-image\" rel=\"nofollow noopener\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/www.europesays.com\/ie\/wp-content\/uploads\/2025\/10\/Website-Banner-Quantum-2.gif\" alt=\"Responsive Image\"\/><\/a><\/p>\n<p>To solve these issues, the research team developed a new 3D printing method to vertically stack\u00a0perovskite, a next-generation semiconductor material that generates light efficiently. This technology, known as\u00a0\u201cultra-fine electrohydrodynamic 3D printing,\u201d\u00a0uses electrical voltage to precisely control invisible ink droplets at the attoliter scale ($10^{-18}$ L).<\/p>\n<p>Through this method, the team successfully printed pillar-shaped nanostructures\u2014much thinner than a human hair\u2014directly and vertically at desired locations without the need for complex subtractive processes (carving material away).<\/p>\n<p>The core of this technology lies in significantly increasing laser efficiency by making the surface of the printed perovskite nanostructures extremely smooth. By combining the printing process with\u00a0gas-phase crystallization control technology, the team achieved high-quality structures with nearly single-crystalline alignment. As a result, they were able to realize\u00a0high-efficiency vertical nanolasers\u00a0that operate stably with minimal light loss.<\/p>\n<p>Additionally, the team demonstrated that the color of the emitted laser light could be precisely tuned by adjusting the height of the nanostructures. Utilizing this, they created laser security patterns invisible to the naked eye\u2014identifiable only with specialized equipment\u2014confirming the potential for commercialization in anti-counterfeiting technology.<\/p>\n<p>Professor Jitae Kim stated, \u201cThis technology allows for the direct, high-density implementation of optical computing semiconductors on a chip without complex processing. It will accelerate the commercialization of ultra-high-speed optical computing and next-generation security technologies.\u201d<\/p>\n<p>The research results, with Dr.\u00a0Shiqi Hu\u00a0from the Department of Mechanical Engineering as the first author, were published online on December 6, 2025, in\u00a0ACS Nano, an international prestigious journal in the field of nanoscience.<\/p>\n<p>This research was conducted with support from the Ministry of Science and ICT\u2019s Excellent Young Researcher Program (RS-2025-00556379), the Mid-career Researcher Support Program (RS-2024-00356928), and the InnoCORE AI-based Intelligent Design-Manufacturing Integrated Research Group (N10250154).<\/p>\n<p>Image credit: KAIST<\/p>\n","protected":false},"excerpt":{"rendered":"Insider Brief KAIST and POSTECH researchers said they developed an ultra-fine electrohydrodynamic 3D printing method that enables vertical&hellip;\n","protected":false},"author":2,"featured_media":274061,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[77],"tags":[18,19,17,139088,139089,139090,73177,172,133],"class_list":{"0":"post-274060","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-science","8":"tag-eire","9":"tag-ie","10":"tag-ireland","11":"tag-kasit","12":"tag-nanolasers","13":"tag-postech","14":"tag-quantum-cryptography","15":"tag-research","16":"tag-science"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@ie\/115859502422035763","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/posts\/274060","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=274060"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/posts\/274060\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/media\/274061"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/media?parent=274060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/categories?post=274060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/tags?post=274060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}