{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,18]],"date-time":"2026-01-18T14:34:44Z","timestamp":1768746884116,"version":"3.49.0"},"reference-count":25,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2019,11,1]],"date-time":"2019-11-01T00:00:00Z","timestamp":1572566400000},"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>Nanoparticle-based drugs are rapidly evolving to treat different conditions and have considerable potential. A new system based on the combination of electrical impedance tomography (EIT) imaging and a power amplifier with a RF coil has been developed to study the effect of gold nanoparticles (AuNPs) when excited in the MHz frequency range. We show that samples including AuNPs have a temperature increase of 1\u20131.5 \u00b0C due to the presence of RF excitation at 13.56 MHz which provides a higher rate of change for solutions without AuNPs. They also show more than a 50% increase in conductivity in difference imaging as the result of this excitation. The change for samples without AuNPs is 40%.<\/jats:p>","DOI":"10.3390\/s19214750","type":"journal-article","created":{"date-parts":[[2019,11,1]],"date-time":"2019-11-01T12:30:50Z","timestamp":1572611450000},"page":"4750","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Towards a System for Tracking Drug Delivery Using Frequency Excited Gold Nanoparticles"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0658-8883","authenticated-orcid":false,"given":"Nazanin","family":"Neshatvar","sequence":"first","affiliation":[{"name":"Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, UK"}]},{"given":"Rui","family":"Damaso","sequence":"additional","affiliation":[{"name":"Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, UK"},{"name":"Department of Natural Science, Middlesex University, The Burroughs, Hendon, London NW4 4BT, UK"}]},{"given":"Nima","family":"Seifnaraghi","sequence":"additional","affiliation":[{"name":"Department of Natural Science, Middlesex University, The Burroughs, Hendon, London NW4 4BT, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0623-963X","authenticated-orcid":false,"given":"Andreas","family":"Demosthenous","sequence":"additional","affiliation":[{"name":"Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, UK"}]},{"given":"Richard","family":"Bayford","sequence":"additional","affiliation":[{"name":"Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, UK"},{"name":"Department of Natural Science, Middlesex University, The Burroughs, Hendon, London NW4 4BT, UK"}]}],"member":"1968","published-online":{"date-parts":[[2019,11,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1307","DOI":"10.1016\/j.addr.2008.03.016","article-title":"Gold nanoparticles in delivery applications","volume":"60","author":"Ghosh","year":"2008","journal-title":"Adv. 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