{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,13]],"date-time":"2025-12-13T07:18:10Z","timestamp":1765610290255,"version":"build-2065373602"},"reference-count":27,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2022,12,8]],"date-time":"2022-12-08T00:00:00Z","timestamp":1670457600000},"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>Scanning microwave microscopy (SMM) is a novel metrological tool that advances the quantitative, nanometric, high-frequency, electrical characterization of a broad range of materials of technological importance. In this work, we report an inverted near-field scanning microwave microscopy (iSMM) investigation of a graphene oxide-based epoxy nanocomposite material at a nanoscopic level. The high-resolution spatial mapping of local conductance provides a quantitative analysis of the sample\u2019s electrical properties. In particular, the electrical conductivity in the order of \u223c10\u22121 S\/m as well as the mapping of the dielectric constant with a value of \u223c4.7 \u00b1 0.2 are reported and validated by the full-wave electromagnetic modeling of the tip\u2013sample interaction.<\/jats:p>","DOI":"10.3390\/s22249608","type":"journal-article","created":{"date-parts":[[2022,12,8]],"date-time":"2022-12-08T03:35:53Z","timestamp":1670470553000},"page":"9608","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Nanoscale Characterization of Graphene Oxide-Based Epoxy Nanocomposite Using Inverted Scanning Microwave Microscopy"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0251-5975","authenticated-orcid":false,"given":"C. H.","family":"Joseph","sequence":"first","affiliation":[{"name":"Department of Information Engineering, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8785-5033","authenticated-orcid":false,"given":"Francesca","family":"Luzi","sequence":"additional","affiliation":[{"name":"Department of Materials, Environmental Sciences and Urban Planning, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9601-149X","authenticated-orcid":false,"given":"S. N. Afifa","family":"Azman","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4686-6913","authenticated-orcid":false,"given":"Pietro","family":"Forcellese","sequence":"additional","affiliation":[{"name":"Department of Materials, Environmental Sciences and Urban Planning, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0711-0021","authenticated-orcid":false,"given":"Eleonora","family":"Pavoni","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6405-2334","authenticated-orcid":false,"given":"Gianluca","family":"Fabi","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3380-5839","authenticated-orcid":false,"given":"Davide","family":"Mencarelli","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5061-0240","authenticated-orcid":false,"given":"Serena","family":"Gentili","sequence":"additional","affiliation":[{"name":"Department of Industrial Engineering and Mathematical Science, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luca","family":"Pierantoni","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antonio","family":"Morini","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5356-9012","authenticated-orcid":false,"given":"Michela","family":"Simoncini","sequence":"additional","affiliation":[{"name":"Department of Industrial Engineering and Mathematical Science, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0220-5785","authenticated-orcid":false,"given":"Tiziano","family":"Bellezze","sequence":"additional","affiliation":[{"name":"Department of Materials, Environmental Sciences and Urban Planning, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9372-5032","authenticated-orcid":false,"given":"Valeria","family":"Corinaldesi","sequence":"additional","affiliation":[{"name":"Department of Materials, Environmental Sciences and Urban Planning, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0377-8574","authenticated-orcid":false,"given":"Marco","family":"Farina","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, Universit\u00e0 Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"838","DOI":"10.1109\/JMW.2021.3106936","article-title":"Microwaves Are Everywhere: \u201cSMM: Nano-Microwaves\u201d","volume":"1","author":"Siegel","year":"2021","journal-title":"IEEE J. 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