Broadband Nanoantennas for Plasmon Enhanced Fluorescence and Raman Spectroscopies
2015 (English)In: Progress In Electromagnetics Research, ISSN 1070-4698, E-ISSN 1559-8985, Vol. 153, 123-131 p.Article in journal (Refereed) PublishedText
We propose a novel design of broadband plasmonic nanoantenna that is suitable for fluorescence and Raman enhancement. The structure consists of a gold nanoring and bowties at the center. We numerically investigate the near field and far field performance by employing the finite-difference time-domain method. High Purcell enhancement and large SERS are demonstrated in a record wide spectral bandwidth of 700 nm based on a single emitter-antenna configuration. Moreover, unlike a traditional antenna design, the proposed nanoantenna has low heat generation and high field enhancement at the gap simultaneously when operating off resonance.
Place, publisher, year, edition, pages
EMW Publishing , 2015. Vol. 153, 123-131 p.
SPECTRAL RESPONSE; SPONTANEOUS EMISSION; RADIATIVE PROPERTIES; SURFACE; SCATTERING; FREQUENCIES; GENERATION; RESONANCE; ANTENNA
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-180642DOI: 10.2528/PIER15092402ISI: 000366917000010ScopusID: 2-s2.0-84948773652OAI: oai:DiVA.org:kth-180642DiVA: diva2:895489
FunderSwedish Research Council
QC 201601192016-01-192016-01-192016-01-19Bibliographically approved