{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T14:25:23Z","timestamp":1787149523850,"version":"build-2736575974"},"reference-count":43,"publisher":"American Chemical Society (ACS)","issue":"4","license":[{"start":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T00:00:00Z","timestamp":1785283200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/100006151","name":"Basic Energy Sciences","doi-asserted-by":"publisher","award":["DE-AC02-06CH11357"],"award-info":[{"award-number":["DE-AC02-06CH11357"]}],"id":[{"id":"10.13039\/100006151","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/na","name":"Anusandhan National Research Foundation, Government of India","doi-asserted-by":"publisher","award":["ANRF\/ARG\/2025\/004299\/LS"],"award-info":[{"award-number":["ANRF\/ARG\/2025\/004299\/LS"]}],"id":[{"id":"10.13039\/na","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,8,19]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Gold nanoparticles with complex anisotropic geometries offer unique opportunities for tailoring plasmonic near-fields beyond the limits of conventional nanorods. Here we combine photon-induced near-field electron microscopy (PINEM) and full-wave simulations to resolve plasmon hybridization and near-field localization in gold dog-bone nanoparticles and their dimers with and without conformal SiO2 shells. We demonstrate that the dog-bone geometry drives unconventional polarization-dependent field confinement, including pronounced tip-localized near-fields under both longitudinal and transverse excitation. Conformal SiO2 shells red-shift the plasmon resonances through dielectric screening and prevent charge-transfer coupling in adjacent dimers. Depending on the dimer orientation and excitation polarization, coupled structures exhibit distinct bonding- and antibonding-like hybridized modes as well as interparticle near-field channels. However, weakly interacting dimers retain largely independent particle responses with geometry-governed asymmetries. The close agreement between PINEM measurements and simulations establishes a direct picture of how shape, dielectric environment, and nanoscale coupling together define plasmonic modes in complex anisotropic nanoparticles. These findings provide design principles for engineering localized optical fields in plasmonic nanoscale structures.<\/jats:p>","DOI":"10.1021\/acsnanoscienceau.6c00058","type":"journal-article","created":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T13:17:49Z","timestamp":1785849469000},"page":"549-557","source":"Crossref","is-referenced-by-count":0,"title":["Plasmonic\nHybridization and Near-Field Localization\nin Gold \u201cDog Bone\u201d Nanoparticles"],"prefix":"10.1021","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1207-7016","authenticated-orcid":true,"given":"Ibrahim","family":"Tanriover","sequence":"first","affiliation":[{"name":"Argonne National Laboratory , , , ,","place":["Lemont, Illinois, United States, 60439"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Koustav","family":"Kundu","sequence":"additional","affiliation":[{"name":"Indian Institute of Technology Mandi , , Kamand , , ,","place":["Mandi, Himachal Pradesh, India, 175005"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9748-0404","authenticated-orcid":true,"given":"Amit","family":"Jaiswal","sequence":"additional","affiliation":[{"name":"Indian Institute of Technology Mandi , , Kamand , , ,","place":["Mandi, Himachal Pradesh, India, 175005"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1840-1921","authenticated-orcid":true,"given":"Haihua","family":"Liu","sequence":"additional","affiliation":[{"name":"Argonne National Laboratory , , , ,","place":["Lemont, Illinois, United States, 60439"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,7,29]]},"reference":[{"key":"2026081909071808800_cit1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-662-09109-8","volume-title":"Optical Properties of\nMetal Clusters","author":"Kreibig","year":"1995"},{"key":"2026081909071808800_cit2","volume-title":"Absorption and Scattering\nof Light by Small Particles","author":"Bohren","year":"2008"},{"key":"2026081909071808800_cit3","doi-asserted-by":"publisher","DOI":"10.1007\/0-387-37825-1","volume-title":"Plasmonics: Fundamentals\nand Applications","author":"Maier","year":"2007"},{"issue":"3","key":"2026081909071808800_cit4","doi-asserted-by":"publisher","first-page":"668","DOI":"10.1021\/jp026731y","article-title":"The Optical Properties\nof Metal Nanoparticles: The Influence of Size, Shape, and Dielectric\nEnvironment","volume":"107","author":"Kelly","year":"2003","journal-title":"J. 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