{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,16]],"date-time":"2026-02-16T19:13:40Z","timestamp":1771269220542,"version":"3.50.1"},"reference-count":20,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2014,6,26]],"date-time":"2014-06-26T00:00:00Z","timestamp":1403740800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Here we have developed a simple method for the fabrication of disposable implantable all-solid-state ion-selective electrodes (ISE) in an array format without using complex fabrication equipment or clean room facilities. The electrodes were designed in a needle shape instead of planar electrodes for a full contact with the tissue. The  needle-shape platform comprises 12 metallic pins which were functionalized with conductive inks and ISE membranes. The modified microelectrodes were characterized with cyclic voltammetry, scanning electron microscope (SEM), and optical interferometry. The surface area and roughness factor of each microelectrode were determined and reproducible values were obtained for all the microelectrodes on the array. In this work, the microelectrodes were modified with membranes for the detection of pH and nitrate ions to prove the reliability of the fabricated sensor array platform adapted to an endoscope.<\/jats:p>","DOI":"10.3390\/s140711416","type":"journal-article","created":{"date-parts":[[2014,6,26]],"date-time":"2014-06-26T11:03:52Z","timestamp":1403780632000},"page":"11416-11426","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Simple and Fast Method for Fabrication of Endoscopic Implantable Sensor Arrays"],"prefix":"10.3390","volume":"14","author":[{"given":"I.","family":"Tahirbegi","sequence":"first","affiliation":[{"name":"Nanobioengineering Laboratory, Institute for Bioengineering of Catalonia (IBEC),  Baldiri Reixac, 10-12, Barcelona 08028, Spain"},{"name":"Department of Electronics, University of Barcelona (UB), Mart\u00ed I Franques, 1,  Barcelona 08028, Spain"}]},{"given":"Margarita","family":"Alvira","sequence":"additional","affiliation":[{"name":"Nanobioengineering Laboratory, Institute for Bioengineering of Catalonia (IBEC),  Baldiri Reixac, 10-12, Barcelona 08028, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1140-3679","authenticated-orcid":false,"given":"M\u00f2nica","family":"Mir","sequence":"additional","affiliation":[{"name":"Nanobioengineering Laboratory, Institute for Bioengineering of Catalonia (IBEC),  Baldiri Reixac, 10-12, Barcelona 08028, Spain"},{"name":"The Biomedical Research Networking center in Bioengineering, Biomaterials and  Nanomedicine (CIBER-BBN), Maria de Luna, 11, 50018, Zaragoza, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1140-3679","authenticated-orcid":false,"given":"Josep","family":"Samitier","sequence":"additional","affiliation":[{"name":"Nanobioengineering Laboratory, Institute for Bioengineering of Catalonia (IBEC),  Baldiri Reixac, 10-12, Barcelona 08028, Spain"},{"name":"The Biomedical Research Networking center in Bioengineering, Biomaterials and  Nanomedicine (CIBER-BBN), Maria de Luna, 11, 50018, Zaragoza, Spain"},{"name":"Department of Electronics, University of Barcelona (UB), Mart\u00ed I Franques, 1,  Barcelona 08028, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2014,6,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"257","DOI":"10.1016\/0165-9936(93)87065-6","article-title":"In vivo blood-gas and electrolyte sensors: Progress and challenges","volume":"12","author":"Meyerhoff","year":"1993","journal-title":"Trends Anal. 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