{"id":8404,"date":"2024-01-31T11:25:05","date_gmt":"2024-01-31T11:25:05","guid":{"rendered":"https:\/\/www-f5.ijs.si\/?p=8404"},"modified":"2024-01-31T11:43:53","modified_gmt":"2024-01-31T11:43:53","slug":"article-in-pnas","status":"publish","type":"post","link":"https:\/\/www-f5.ijs.si\/en\/article-in-pnas\/2024","title":{"rendered":"Article in PNAS"},"content":{"rendered":"\n<p class=\"eplus-wrapper wp-block-paragraph\">Researchers Gregor Pirnat, Matev\u017e Marin\u010di\u010d, Miha Ravnik, and Matja\u017e Humar from the F5 department at the &#8220;J. Stefan&#8221; Institute and the Faculty of Mathematics and Physics at the University of Ljubljana have published a paper titled <a href=\"https:\/\/www.pnas.org\/doi\/10.1073\/pnas.2314884121\"><em>Quantifying Local Stiffness and Forces in Soft Biological Tissues Using Droplet Optical Microcavities<\/em><\/a> in the journal <em>PNAS<\/em>. Researchers developed a method for quantitative measurements of mechanical properties of soft biological tissues and materials based on the measurements of \u00bbwhispering gallery mode\u00ab spectra of optical resonances in droplet microresonators. They implanted the droplets in test samples (e.g. brain tissue) and determined the droplet&#8217;s deformation and shape with nanometer precision, by measuring small shifts of the optical resonances in spectra, measured at different positions in the droplet. The elastocapillary interaction couples the droplet to the deformation of the surrounding medium, enabling the determination of material properties of the medium. Because of the high sensitivity of optical resonances they could measure forces of only a few piconewtons at the droplet surface. The purpose of the method is elastography of soft biological tissues, ranging from mucus to muscle tissue.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Researchers Gregor Pirnat, Matev\u017e Marin\u010di\u010d, Miha Ravnik, and Matja\u017e Humar from the F5 department at the &#8220;J. Stefan&#8221; Institute and the Faculty of Mathematics and Physics at the University of Ljubljana have published a paper titled Quantifying Local Stiffness and Forces in Soft Biological Tissues Using Droplet Optical Microcavities in the journal PNAS. Researchers developed [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":8350,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_editorskit_title_hidden":false,"_editorskit_reading_time":0,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","editor_plus_copied_stylings":"{}","footnotes":""},"categories":[334],"tags":[],"class_list":["post-8404","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-featured-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Article in PNAS - In\u0161titut Jo\u017eef Stefan<\/title>\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-f5.ijs.si\/en\/article-in-pnas\/2024\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Article in PNAS - In\u0161titut Jo\u017eef Stefan\" \/>\n<meta property=\"og:description\" content=\"Researchers Gregor Pirnat, Matev\u017e Marin\u010di\u010d, Miha Ravnik, and Matja\u017e Humar from the F5 department at the &#8220;J. Stefan&#8221; Institute and the Faculty of Mathematics and Physics at the University of Ljubljana have published a paper titled Quantifying Local Stiffness and Forces in Soft Biological Tissues Using Droplet Optical Microcavities in the journal PNAS. 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