{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,28]],"date-time":"2026-01-28T10:52:16Z","timestamp":1769597536293,"version":"3.49.0"},"reference-count":40,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2018,11,8]],"date-time":"2018-11-08T00:00:00Z","timestamp":1541635200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Departamento Administrativo de Ciencia, Tecnolog\u00eda e Innovaci\u00f3n","award":["FP44842-128-2017"],"award-info":[{"award-number":["FP44842-128-2017"]}]},{"DOI":"10.13039\/501100001807","name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de S\u00e3o Paulo","doi-asserted-by":"publisher","award":["2013\/14262-7; 2013\/01897-4; 2016\/09634-0; 2016\/06612-6; 2016\/12311-9"],"award-info":[{"award-number":["2013\/14262-7; 2013\/01897-4; 2016\/09634-0; 2016\/06612-6; 2016\/12311-9"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","award":["N\/A"],"award-info":[{"award-number":["N\/A"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002322","name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior","doi-asserted-by":"publisher","award":["N\/A"],"award-info":[{"award-number":["N\/A"]}],"id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The recent development of silver nanostars (Ag-NSs) is promising for improved surface-enhanced sensing and spectroscopy, which may be further exploited if the mechanisms behind the excitation of localized surface plasmon resonances (LSPRs) are identified. Here, we show that LSPRs in Ag-NSs can be obtained with finite-difference time-domain (FDTD) calculations by considering the nanostars as combination of crossed nanorods (Ag-NRs). In particular, we demonstrate that an apparent tail at large wavelengths (    \u03bb \u2273 700     nm) observed in the extinction spectra of Ag-NSs is due to a strong dipolar plasmon resonance, with no need to invoke heterogeneity (different number of arms) effects as is normally done in the literature. Our description also indicates a way to tune the strongest LSPR at desired wavelengths, which is useful for sensing applications.<\/jats:p>","DOI":"10.3390\/s18113821","type":"journal-article","created":{"date-parts":[[2018,11,9]],"date-time":"2018-11-09T03:08:02Z","timestamp":1541732882000},"page":"3821","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":28,"title":["Surface Plasmon Resonances in Silver Nanostars"],"prefix":"10.3390","volume":"18","author":[{"given":"Faustino","family":"Reyes G\u00f3mez","sequence":"first","affiliation":[{"name":"Departamento de F\u00edsica, Universidad del Valle, AA 25360 Cali, Colombia"},{"name":"Department of Applied Physics, University of Cantabria, Avda. Los Castros, s\/n, 39005 Santander, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rafael J. G.","family":"Rubira","sequence":"additional","affiliation":[{"name":"School of Technology and Applied Sciences, S\u00e3o Paulo State University (UNESP), Campus Presidente Prudente, S\u00e3o Carlos 19060-900, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sabrina A.","family":"Camacho","sequence":"additional","affiliation":[{"name":"School of Technology and Applied Sciences, S\u00e3o Paulo State University (UNESP), Campus Presidente Prudente, S\u00e3o Carlos 19060-900, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cibely S.","family":"Martin","sequence":"additional","affiliation":[{"name":"School of Technology and Applied Sciences, S\u00e3o Paulo State University (UNESP), Campus Presidente Prudente, S\u00e3o Carlos 19060-900, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6887-4749","authenticated-orcid":false,"given":"Robson R.","family":"Da Silva","sequence":"additional","affiliation":[{"name":"S\u00e3o Carlos Institute of Physics, University of S\u00e3o Paulo, PO Box 369, S\u00e3o Carlos 13560-970, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carlos J. L.","family":"Constantino","sequence":"additional","affiliation":[{"name":"School of Technology and Applied Sciences, S\u00e3o Paulo State University (UNESP), Campus Presidente Prudente, S\u00e3o Carlos 19060-900, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Priscila","family":"Alessio","sequence":"additional","affiliation":[{"name":"School of Technology and Applied Sciences, S\u00e3o Paulo State University (UNESP), Campus Presidente Prudente, S\u00e3o Carlos 19060-900, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"suffix":"Jr.","given":"Osvaldo N.","family":"Oliveira","sequence":"additional","affiliation":[{"name":"S\u00e3o Carlos Institute of Physics, University of S\u00e3o Paulo, PO Box 369, S\u00e3o Carlos 13560-970, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1742-9957","authenticated-orcid":false,"given":"J. Ricardo","family":"Mej\u00eda-Salazar","sequence":"additional","affiliation":[{"name":"S\u00e3o Carlos Institute of Physics, University of S\u00e3o Paulo, PO Box 369, S\u00e3o Carlos 13560-970, Brazil"},{"name":"National Institute of Telecommunications (Inatel), Santa Rita do Sapuca\u00ed, MG 37540-000, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,11,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"145","DOI":"10.1016\/j.envpol.2015.04.018","article-title":"Chloride-induced shape transformation of silver nanoparticles in a water environment","volume":"204","author":"Zhang","year":"2015","journal-title":"Environ. Pollut."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"724","DOI":"10.1002\/adom.201300224","article-title":"Responsive Monochromatic Color Display Based on Nanovolcano Arrays","volume":"1","author":"Ai","year":"2013","journal-title":"Adv. Opt. 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