{"id":3725,"date":"2025-12-17T16:28:24","date_gmt":"2025-12-17T15:28:24","guid":{"rendered":"http:\/\/polysense.poliba.it\/?p=3725"},"modified":"2025-12-17T16:38:48","modified_gmt":"2025-12-17T15:38:48","slug":"new-publication-on-acs-sensors-journal","status":"publish","type":"post","link":"https:\/\/polysense.poliba.it\/index.php\/2025\/12\/17\/new-publication-on-acs-sensors-journal\/","title":{"rendered":"New Publication on ACS Sensors journal"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The PolySense and Polysense Innovations teams have just published\u00a0 a new article on ACS Sensors Journal (IF 9.1)\u00a0 reporting on  the development of a dual-gas Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) sensor operating in the mid-infrared range for the simultaneous detection of <sup>12<\/sup>CH<sub>4<\/sub>\u00a0and\u00a0<sup>13<\/sup>CH<sub>4<\/sub>. The sensor employs a frequency-modulated multiplexing scheme using two distributed-feedback quantum cascade lasers to independently excite the fundamental (f<sub>o<\/sub>) and overtone (<em>f<\/em><sub>1<\/sub>) vibrational modes of a quartz tuning fork coupled with resonator tubes. Calibration measurements demonstrated a linear response of the QEPAS signal to varying\u00a0<sup>13<\/sup>CH<sub>4<\/sub>\u00a0concentrations in CH<sub>4<\/sub>-based samples diluted in N<sub>2<\/sub>, with a precision of 1\u2030 in detecting isotopic delta ratio variations for 1% CH<sub>4<\/sub>\u00a0mixtures at 0.8 s integration time. The proposed system is suitable for real-time, high-precision isotopic methane sensing aimed at applications such as environmental monitoring, geochemical tracing, and industrial process control.  <\/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\/12\/simultaneous-detection-of-12ch4-13ch4-and-related-isotope-ratio-exploiting-a-frequency-multiplexed-mid-infrared-quartz.pdf\">http:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/12\/simultaneous-detection-of-12ch4-13ch4-and-related-isotope-ratio-exploiting-a-frequency-multiplexed-mid-infrared-quartz.pdf<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"864\" height=\"669\" src=\"https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/12\/ACS-dual-gas-isotopes.jpg\" alt=\"\" class=\"wp-image-3722\" srcset=\"https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/12\/ACS-dual-gas-isotopes.jpg 864w, https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/12\/ACS-dual-gas-isotopes-300x232.jpg 300w, https:\/\/polysense.poliba.it\/wp-content\/uploads\/2025\/12\/ACS-dual-gas-isotopes-768x595.jpg 768w\" sizes=\"(max-width: 864px) 100vw, 864px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The PolySense and Polysense Innovations teams have just published\u00a0 a new article on ACS Sensors Journal (IF 9.1)\u00a0 reporting on the development of a dual-gas Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) sensor operating in the mid-infrared range for the simultaneous detection of 12CH4\u00a0and\u00a013CH4. The sensor employs a frequency-modulated multiplexing scheme using two distributed-feedback quantum cascade lasers to <a href=\"https:\/\/polysense.poliba.it\/index.php\/2025\/12\/17\/new-publication-on-acs-sensors-journal\/\" rel=\"nofollow\"><span class=\"sr-only\">Leggi di pi\u00f9New Publication on ACS Sensors journal<\/span>[&hellip;]<\/a><\/p>\n","protected":false},"author":2,"featured_media":3728,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3725","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\/3725","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=3725"}],"version-history":[{"count":2,"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/posts\/3725\/revisions"}],"predecessor-version":[{"id":3729,"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/posts\/3725\/revisions\/3729"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/media\/3728"}],"wp:attachment":[{"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/media?parent=3725"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/categories?post=3725"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/polysense.poliba.it\/index.php\/wp-json\/wp\/v2\/tags?post=3725"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}