{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,30]],"date-time":"2025-12-30T15:35:49Z","timestamp":1767108949050,"version":"build-2065373602"},"reference-count":29,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2019,2,23]],"date-time":"2019-02-23T00:00:00Z","timestamp":1550880000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003009","name":"Science and Technology Development Fund","doi-asserted-by":"publisher","award":["26534"],"award-info":[{"award-number":["26534"]}],"id":[{"id":"10.13039\/501100003009","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A novel optofluidic sensor that measures the local pressure of the fluid inside a microfluidic channel is presented. It can be integrated directly on-channel and requires no additional layers in fabrication. The detection can be accomplished at a single wavelength; and thereby, only a single laser diode and a single photodetector are required. This renders the sensor to be compact, cheap and easy to fabricate. Basically, the sensor consisted of a Fabry\u2013P\u00e9rot microresonator enclosing the fluidic channel. A novel structure of the Fabry\u2013P\u00e9rot was employed to achieve high-quality factor, that was essential to facilitate the single wavelength detection. The enhanced performance was attributed to the curved mirrors and cylindrical lenses used to avoid light diffraction loss. The presented sensor was fabricated and tested with deionized water liquid and shown to exhibit a sensitivity up to 12.46 dBm\/bar, and a detection limit of 8.2 mbar. Numerical simulations are also presented to evaluate the mechanical\u2013fluidic performance of the device.<\/jats:p>","DOI":"10.3390\/s19040944","type":"journal-article","created":{"date-parts":[[2019,2,25]],"date-time":"2019-02-25T03:06:52Z","timestamp":1551064012000},"page":"944","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["On-Channel Integrated Optofluidic Pressure Sensor with Optically Boosted Sensitivity"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9472-1084","authenticated-orcid":false,"given":"Noha","family":"Gaber","sequence":"first","affiliation":[{"name":"Center for Nanotechnology, Zewail City of Science and Technology, October Gardens, 6th of October, Giza 12578, Egypt"},{"name":"Universit\u00e9 Paris-Est, ESIEE Paris, ESYCOM EA 2552, 93162 Noisy-le-Grand, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2376-0198","authenticated-orcid":false,"given":"Ahmad","family":"Altayyeb","sequence":"additional","affiliation":[{"name":"Center for Nanotechnology, Zewail City of Science and Technology, October Gardens, 6th of October, Giza 12578, Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sherif A.","family":"Soliman","sequence":"additional","affiliation":[{"name":"Center for Nanotechnology, Zewail City of Science and Technology, October Gardens, 6th of October, Giza 12578, Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5385-4697","authenticated-orcid":false,"given":"Yasser M.","family":"Sabry","sequence":"additional","affiliation":[{"name":"Faculty of Engineering, Ain-Shams University, Cairo 11566, Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fr\u00e9d\u00e9ric","family":"Marty","sequence":"additional","affiliation":[{"name":"Universit\u00e9 Paris-Est, ESIEE Paris, ESYCOM EA 2552, 93162 Noisy-le-Grand, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2342-7149","authenticated-orcid":false,"given":"Tarik","family":"Bourouina","sequence":"additional","affiliation":[{"name":"Universit\u00e9 Paris-Est, ESIEE Paris, ESYCOM EA 2552, 93162 Noisy-le-Grand, France"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,2,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1747","DOI":"10.1109\/5.704280","article-title":"Application of MEMS Technology in Automotive Sensors and Actuators","volume":"86","author":"Eddy","year":"1998","journal-title":"Proc. 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