Plasmonic nanostructures: Local versus nonlocal response
2010 (English)In: Plasmonics: Metallic Nanostructures And Their Optical Properties VIII, SPIE - International Society for Optical Engineering, 2010, 77571T- p.Conference paper (Refereed)
We study the importance of taking the nonlocal optical response of metals into account for accurate determination of optical properties of nanoplasmonic structures. Here we focus on the computational physics aspects of this problem, and in particular we report on the nonlocal-response package that we wrote for state-of the art numerical software, enabling us to take into account the nonlocal material response of metals for any arbitrarily shaped nanoplasmonic structures, without much numerical overhead as compared to the standard local response. Our method is a frequency-domain method, and hence it is sensitive to possible narrow resonances that may arise due to strong electronic quantum confinement in the metal. This feature allows us to accurately determine which geometries are strongly affected by nonlocal response, for example regarding applications based on electric field enhancement properties for which metal nanostructures are widely used.
Place, publisher, year, edition, pages
SPIE - International Society for Optical Engineering, 2010. 77571T- p.
, Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X ; 7757
Field enhancement, Hydrodynamical Drude model, Nanoplasmonics, Nonlocal optical response
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-150093DOI: 10.1117/12.860774ISI: 000285828300021ScopusID: 2-s2.0-79952673396ISBN: 978-081948253-2OAI: oai:DiVA.org:kth-150093DiVA: diva2:744240
Plasmonics: Metallic Nanostructures and Their Optical Properties VIII, 1 August 2010 through 5 August 2010, San Diego, CA, United States
QC 201409082014-09-082014-08-292014-09-08Bibliographically approved