{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,17]],"date-time":"2026-01-17T23:21:38Z","timestamp":1768692098394,"version":"3.49.0"},"reference-count":33,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2015,6,30]],"date-time":"2015-06-30T00:00:00Z","timestamp":1435622400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>As highly sensitive H2S gas sensors, Au- and Ag-catalyzed SnO2 thin films with morphology-controlled nanostructures were fabricated by using e-beam evaporation in combination with the glancing angle deposition (GAD) technique. After annealing at 500 \u00b0C for 40 h, the sensors showed a polycrystalline phase with a porous, tilted columnar nanostructure. The gas sensitivities (S = Rgas\/Rair) of Au and Ag-catalyzed SnO2 sensors fabricated by the GAD process were 0.009 and 0.015, respectively, under 5 ppm H2S at 300 \u00b0C, and the 90% response time was approximately 5 s. These sensors showed excellent sensitivities compared with the SnO2 thin film sensors that were deposited normally (glancing angle = 0\u00b0, S = 0.48).<\/jats:p>","DOI":"10.3390\/s150715468","type":"journal-article","created":{"date-parts":[[2015,6,30]],"date-time":"2015-06-30T11:40:13Z","timestamp":1435664413000},"page":"15468-15477","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":52,"title":["Highly Sensitive H2S Sensor Based on the Metal-Catalyzed SnO2 Nanocolumns Fabricated by Glancing Angle Deposition"],"prefix":"10.3390","volume":"15","author":[{"given":"Kwang","family":"Yoo","sequence":"first","affiliation":[{"name":"Department of Materials Science and Engineering, University of Seoul, 163, Seoulsiripdae-ro, Dongdaemun-gu, Seoul 130-743, Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2010-6473","authenticated-orcid":false,"given":"Soo","family":"Han","sequence":"additional","affiliation":[{"name":"Center for Electronic Materials, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 136-791, Korea"},{"name":"KU-KIST Graduate School of Converging Science and Technology, Korea University, 145,  Anam-ro, Seongbuk-gu, Seoul 136-701, Korea"}]},{"given":"Hi","family":"Moon","sequence":"additional","affiliation":[{"name":"Center for Electronic Materials, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 136-791, Korea"}]},{"given":"Seok-Jin","family":"Yoon","sequence":"additional","affiliation":[{"name":"Center for Electronic Materials, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 136-791, Korea"}]},{"given":"Chong-Yun","family":"Kang","sequence":"additional","affiliation":[{"name":"Center for Electronic Materials, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 136-791, Korea"},{"name":"KU-KIST Graduate School of Converging Science and Technology, Korea University, 145,  Anam-ro, Seongbuk-gu, Seoul 136-701, Korea"}]}],"member":"1968","published-online":{"date-parts":[[2015,6,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"132","DOI":"10.1016\/j.snb.2004.05.015","article-title":"Low-level detection of ethanol and H2S with temperature-modulated WO3 nanoparticle gas sensors","volume":"104","author":"Ionescu","year":"2005","journal-title":"Sens. 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