{"id":3531,"date":"2025-07-25T14:58:24","date_gmt":"2025-07-25T12:58:24","guid":{"rendered":"http:\/\/polysense.poliba.it\/?p=3531"},"modified":"2025-08-28T13:50:41","modified_gmt":"2025-08-28T11:50:41","slug":"new-publication-on-sensors-journal-2","status":"publish","type":"post","link":"https:\/\/polysense.poliba.it\/index.php\/2025\/07\/25\/new-publication-on-sensors-journal-2\/","title":{"rendered":"New Publication on Sensors Journal"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"> The PolySense team has just published&nbsp; a new article on Sensors Journal MPDI (IF 3.5)&nbsp; reporting on an ultra-compact optical gas-sensing system, consisting of a pigtailed laser diode emitting at 1392.5 nm for water vapor (H<sub>2<\/sub>O) detection, a silicon nitride (Si<sub>3<\/sub>N<sub>4<\/sub>) optical waveguide to guide the laser light, and a custom-designed, low-frequency, and T-shaped Quartz Tuning Fork (QTF) as the sensitive element. The system employs both Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) and Light-Induced Thermoelastic Spectroscopy (LITES) techniques for trace gas sensing.  Both QEPAS and LITES demonstrated comparably low signal-to-noise ratios (SNRs), ranging from 1.6 to 3.2 for a 1.6% indoor H<sub>2<\/sub>O concentration, primarily owing to the reduced optical power (~300 \u03bcW) delivered to the QTF excitation point. These results demonstrate the feasibility of integrating photonic devices and piezoelectric components into portable gas-sensing systems for challenging environments.   <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> The following link provides access to the article:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/07\/sensors-25-03663-v3.pdf\">http:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/07\/sensors-25-03663-v3.pdf<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"742\" height=\"1024\" src=\"https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/07\/integrated-QEPAS-742x1024.png\" alt=\"\" class=\"wp-image-3530\" srcset=\"https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/07\/integrated-QEPAS-742x1024.png 742w, https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/07\/integrated-QEPAS-217x300.png 217w, https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/07\/integrated-QEPAS-768x1060.png 768w, https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/07\/integrated-QEPAS.png 847w\" sizes=\"(max-width: 742px) 100vw, 742px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"240\" height=\"345\" src=\"https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/07\/cover-sensors-v25-i12.png\" alt=\"\" class=\"wp-image-3532\" srcset=\"https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/07\/cover-sensors-v25-i12.png 240w, https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/07\/cover-sensors-v25-i12-209x300.png 209w\" sizes=\"(max-width: 240px) 100vw, 240px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The PolySense team has just published&nbsp; a new article on Sensors Journal MPDI (IF 3.5)&nbsp; reporting on an ultra-compact optical gas-sensing system, consisting of a pigtailed laser diode emitting at 1392.5 nm for water vapor (H2O) detection, a silicon nitride (Si3N4) optical waveguide to guide the laser light, and a custom-designed, low-frequency, and T-shaped Quartz <a href=\"https:\/\/polysense.poliba.it\/index.php\/2025\/07\/25\/new-publication-on-sensors-journal-2\/\" rel=\"nofollow\"><span class=\"sr-only\">Leggi di pi\u00f9New Publication on Sensors Journal<\/span>[&hellip;]<\/a><\/p>\n","protected":false},"author":2,"featured_media":763,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3531","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-senza-categoria"],"_links":{"self":[{"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/posts\/3531","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/comments?post=3531"}],"version-history":[{"count":3,"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/posts\/3531\/revisions"}],"predecessor-version":[{"id":3553,"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/posts\/3531\/revisions\/3553"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/media\/763"}],"wp:attachment":[{"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/media?parent=3531"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/categories?post=3531"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/tags?post=3531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}