{"id":84366,"date":"2019-06-11T08:55:08","date_gmt":"2019-06-11T08:55:08","guid":{"rendered":"https:\/\/\/researchers-design-nanoscale-light-based-feedback-loop\/"},"modified":"2019-06-11T08:55:08","modified_gmt":"2019-06-11T08:55:08","slug":"researchers-design-nanoscale-light-based-feedback-loop","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/en\/researchers-design-nanoscale-light-based-feedback-loop\/","title":{"rendered":"Researchers design nanoscale light-based feedback loop"},"content":{"rendered":"<p>Publishing their results in Nature Nanotechnology under the paper title \u201cTransition metal dichalcogenide nanodisks as high-index dielectric Mie nanoresonators\u201d, the researchers fabricated nanodisks from exfoliated multilayer tungsten disulphide (WS<sub>2<\/sub>) and demonstrated distinct Mie resonances and anapole states, which they could tune in wavelength over the visible and near-infrared range by varying the nanodisk size and aspect ratio. They also describe a novel regime of light\u2013matter interaction, anapole-exciton polaritons occurring within a single WS2 nanodisk, which they say could be harnessed to design tiny optical resonators for light-based feedback loops.<\/p>\n<p>\u201cWe have created a hybrid consisting of equal parts of light and matter. The concept opens completely new doors in both fundamental research and applied nanophotonics and there is a great deal of scientific interest in this,\u201d explained Ruggero Verre, a researcher in the Department of Physics at Chalmers and one of the authors of the scientific article.<\/p>\n<hr \/>\n<p>The discovery came about when Verre and his departmental colleagues Timur Shegai, Denis Baranov, Battulga Munkhbat and Mikael K\u00e4ll combined two different concepts in an innovative way. Mikael K\u00e4ll\u2019s research team is working on what are known as nanoantennas, which can capture and amplify light in the most efficient way. Timur Shegai\u2019s team is conducting research into a certain type of atomically thin two-dimensional materials known as transition metal dichalcogenides (TMDCs), which resembles graphene. It was by combining the antenna concept with stacked two-dimensional material that the new possibilities were created.<\/p>\n<p>By creating a tiny resonance box with WS<sub>2<\/sub>, they were able to make the light and matter interact inside it, ensuring that the light is captured and bounces round in a certain \u2018tone\u2019 inside the material, efficiently transferring the light energy to the electrons of the TMDC material and back again.<\/p>\n<p>The anapole-exciton polaritons light-matter interaction is akin to having the light energy oscillates between two states \u2013 light waves and matter \u2013 while it is captured and amplified inside the box. The researchers have succeeded in combining light and matter extremely efficiently in a single particle with a diameter of only 100 nanometres.<\/p>\n<p>\u201cWe have succeeded in demonstrating that stacked atomically thin materials can be nanostructured into tiny optical resonators, which is of great interest for photonics applications. Since this is a new way of using the material, we are calling this \u2018TMDC nanophotonics\u2019. I am certain that this research field has a bright future,\u201d says Timur Shegai, Associate Professor in the Department of Physics at Chalmers and one of the authors of the article.<\/p>\n<p>Chalmers University of Technology \u2013 <a href=\"http:\/\/www.chalmers.se\/\">www.chalmers.se<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Researchers at Chalmers University of Technology, Sweden, have discovered a completely new way of capturing, amplifying and linking light to matter at the nanolevel. Using a tiny box, built from stacked atomically thin material, they have designed a novel type of feedback loop in which light and matter become one. <\/p>\n","protected":false},"author":22,"featured_media":84367,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[26],"tags":[54,72],"domains":[42,39],"ppma_author":[1149],"class_list":["post-84366","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology-news","tag-analog","tag-optoelectronics","domains-eenews-analog","domains-eenews-europe"],"acf":[],"yoast_head":"<title>Researchers design nanoscale light-based feedback loop ...<\/title>\n<meta name=\"description\" content=\"Researchers at Chalmers University of Technology, Sweden, have discovered a completely new way of capturing, amplifying and linking light to matter at the...\" \/>\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.ecinews.fr\/en\/wp-json\/wp\/v2\/posts\/84366\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Researchers design nanoscale light-based feedback loop\" \/>\n<meta property=\"og:description\" content=\"Researchers at Chalmers University of Technology, Sweden, have discovered a completely new way of capturing, amplifying and linking light to matter at the nanolevel. 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