{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T19:23:31Z","timestamp":1773084211637,"version":"3.50.1"},"reference-count":46,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2023,9,30]],"date-time":"2023-09-30T00:00:00Z","timestamp":1696032000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Quantum Science and Technology Institute","award":["PE0000023-NQSTI"],"award-info":[{"award-number":["PE0000023-NQSTI"]}]},{"name":"National Quantum Science and Technology Institute","award":["RP1221816BF94E0A"],"award-info":[{"award-number":["RP1221816BF94E0A"]}]},{"name":"National Quantum Science and Technology Institute","award":["RG12117A84C979D"],"award-info":[{"award-number":["RG12117A84C979D"]}]},{"DOI":"10.13039\/501100004271","name":"Sapienza Research Project","doi-asserted-by":"publisher","award":["PE0000023-NQSTI"],"award-info":[{"award-number":["PE0000023-NQSTI"]}],"id":[{"id":"10.13039\/501100004271","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004271","name":"Sapienza Research Project","doi-asserted-by":"publisher","award":["RP1221816BF94E0A"],"award-info":[{"award-number":["RP1221816BF94E0A"]}],"id":[{"id":"10.13039\/501100004271","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004271","name":"Sapienza Research Project","doi-asserted-by":"publisher","award":["RG12117A84C979D"],"award-info":[{"award-number":["RG12117A84C979D"]}],"id":[{"id":"10.13039\/501100004271","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Sapienza University Major Project","award":["PE0000023-NQSTI"],"award-info":[{"award-number":["PE0000023-NQSTI"]}]},{"name":"Sapienza University Major Project","award":["RP1221816BF94E0A"],"award-info":[{"award-number":["RP1221816BF94E0A"]}]},{"name":"Sapienza University Major Project","award":["RG12117A84C979D"],"award-info":[{"award-number":["RG12117A84C979D"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This work presents a compact and sensitive refractive index sensor able to evaluate the concentration of an analyte in a sample. Its working principle leverages on the changes in the optical absorption features introduced by the sample itself on the evanescent waves of a light beam. The device\u2019s high compactness is achieved by embedding the sample\u2013light interaction site and the detector in a 1 cm2 glass substrate, thanks to microelectronics technologies. High sensitivity is obtained by employing a low-noise p-i-n hydrogenated amorphous silicon junction, whose manufacture process requires only four UV lithographic steps on a glass substrate, thus ensuring low production costs. The system\u2019s capabilities are investigated by sensing the sugar content in three commercial beverages. Sensitivities of 32, 53 and 80 pA\/% and limits of detection of 47, 29 and 18 ppm are achieved. The above performance is comparable with state-of-the-art results available in the literature, where more complex optical setups, expensive instrumentation and bulky devices are used.<\/jats:p>","DOI":"10.3390\/s23198184","type":"journal-article","created":{"date-parts":[[2023,10,2]],"date-time":"2023-10-02T04:39:30Z","timestamp":1696221570000},"page":"8184","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Sensitive and Compact Evanescent-Waveguide Optical Detector for Sugar Sensing in Commercial Beverages"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8071-5406","authenticated-orcid":false,"given":"Alessio","family":"Buzzin","sequence":"first","affiliation":[{"name":"Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome, via Eudossiana 18, 00184 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2898-9047","authenticated-orcid":false,"given":"Rita","family":"Asquini","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome, via Eudossiana 18, 00184 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3709-6662","authenticated-orcid":false,"given":"Domenico","family":"Caputo","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome, via Eudossiana 18, 00184 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9935-2975","authenticated-orcid":false,"given":"Giampiero","family":"de Cesare","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome, via Eudossiana 18, 00184 Rome, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2023,9,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2627","DOI":"10.1016\/S0140-6736(17)32129-3","article-title":"Worldwide trends in body-mass index, underweight, overweight, and obesity from 1975 to 2016: A pooled analysis of 2416 population-based measurement studies in 128 9 million children, adolescents, and adults","volume":"390","author":"Bentham","year":"2017","journal-title":"Lancet"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"GBD 2015 Obesity Collaborators (2017). 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