{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,18]],"date-time":"2026-04-18T00:44:45Z","timestamp":1776473085213,"version":"3.51.2"},"reference-count":50,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2022,8,7]],"date-time":"2022-08-07T00:00:00Z","timestamp":1659830400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004663","name":"Ministry of Science and Technology of Taiwan","doi-asserted-by":"publisher","award":["MOST 111-2221-E-224-050"],"award-info":[{"award-number":["MOST 111-2221-E-224-050"]}],"id":[{"id":"10.13039\/501100004663","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004663","name":"Ministry of Science and Technology of Taiwan","doi-asserted-by":"publisher","award":["MOST 110-2221-E-224-051"],"award-info":[{"award-number":["MOST 110-2221-E-224-051"]}],"id":[{"id":"10.13039\/501100004663","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this research, a microfluid-based extended gate field-effect transistor (EGFET) biosensor with an on-chip sensing window (OCSW) was fabricated. The detection window was composed of six metal layers, and a ruthenium dioxide (RuO2) film was spattered on the surface and functionalized with lactase to detect lactic acid (LA). To detect LA in a more diversified way, a microfluidic system was integrated with the biosensor. Moreover, a special package was used to seal the sensing window and microfluidic tube and insulate it from other parts to prevent water molecule invasion and chip damage. The sensitivity analysis of the EGFET biosensor was studied by a semiconductor parameter analyzer (SPA). The static and dynamic measurements of the EGFET with sensing windows on a chip were analyzed. The sensing characteristics of the EGFET biosensor were verified by the experimental results. The proposed biosensor is suitable for wearable applications due to the advantages of its low weight, low voltage, and simple manufacturing process.<\/jats:p>","DOI":"10.3390\/s22155905","type":"journal-article","created":{"date-parts":[[2022,8,9]],"date-time":"2022-08-09T04:16:55Z","timestamp":1660018615000},"page":"5905","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["The Characteristics Analysis of a Microfluid-Based EGFET Biosensor with On-Chip Sensing Film for Lactic Acid Detection"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2791-9642","authenticated-orcid":false,"given":"Po-Yu","family":"Kuo","sequence":"first","affiliation":[{"name":"Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chun-Hung","family":"Chang","sequence":"additional","affiliation":[{"name":"Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wei-Hao","family":"Lai","sequence":"additional","affiliation":[{"name":"Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tai-Hui","family":"Wang","sequence":"additional","affiliation":[{"name":"Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Jing, K.H., Arshad, M.K.M.d., Huda, A.R.N., Ruslinda, R., Gopinath, S.C.B., Nuzaihan, M.N.M., Ayub, R.M., Fathil, M.F.M., Othman, N., and Hashim, U. 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