{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T11:02:41Z","timestamp":1781089361795,"version":"3.54.1"},"reference-count":53,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2022,2,16]],"date-time":"2022-02-16T00:00:00Z","timestamp":1644969600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Development program of ETU &quot;LETI&quot; within the framework of the program of strategic academic leadership&quot; Priority-2030 No 075-15-2021-1318 on 29 Sept 2021","award":["075-15-2021-1318"],"award-info":[{"award-number":["075-15-2021-1318"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Approaches are being developed to create composite materials with a fractal-percolation structure based on intercalated porous matrices to increase the sensitivity of adsorption gas sensors. Porous silicon, nickel-containing porous silicon, and zinc oxide have been synthesized as materials for such structures. Using the impedance spectroscopy method, it has been shown that the obtained materials demonstrate high sensitivity to organic solvent vapors and can be used in gas sensors. A model is proposed that explains the high sensitivity and inductive nature of the impedance at low frequencies, considering the structural features and fractal-percolation properties of the obtained oxide materials.<\/jats:p>","DOI":"10.3390\/s22041530","type":"journal-article","created":{"date-parts":[[2022,2,16]],"date-time":"2022-02-16T21:36:24Z","timestamp":1645047384000},"page":"1530","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["Impedance Spectroscopy of Hierarchical Porous Nanomaterials Based on por-Si, por-Si Incorporated by Ni and Metal Oxides for Gas Sensors"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0209-9273","authenticated-orcid":false,"given":"Anton","family":"Bobkov","sequence":"first","affiliation":[{"name":"Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University \u201cLETI\u201d, Professor Popov Str. 5, 197376 St. Petersburg, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Victor","family":"Luchinin","sequence":"additional","affiliation":[{"name":"Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University \u201cLETI\u201d, Professor Popov Str. 5, 197376 St. Petersburg, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vyacheslav","family":"Moshnikov","sequence":"additional","affiliation":[{"name":"Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University \u201cLETI\u201d, Professor Popov Str. 5, 197376 St. Petersburg, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Svetlana","family":"Nalimova","sequence":"additional","affiliation":[{"name":"Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University \u201cLETI\u201d, Professor Popov Str. 5, 197376 St. Petersburg, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5852-999X","authenticated-orcid":false,"given":"Yulia","family":"Spivak","sequence":"additional","affiliation":[{"name":"Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University \u201cLETI\u201d, Professor Popov Str. 5, 197376 St. Petersburg, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,2,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1304","DOI":"10.1364\/OE.446294","article-title":"Highly sensitive methane detection based on light-induced thermoelastic spectroscopy with a 2.33 \u00b5m diode laser and adaptive Savitzky-Golay filtering","volume":"30","author":"Liu","year":"2022","journal-title":"Opt. 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