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Ultrahigh refractive index sensing performance of plasmonic quadrupole resonances in gold nanoparticles.
| Content Provider | Europe PMC |
|---|---|
| Author | Yong, Zehui Lei, Dang Yuan Lam, Chi Hang Wang, Yu |
| Copyright Year | 2014 |
| Abstract | The refractive index sensing properties of plasmonic resonances in gold nanoparticles (nanorods and nanobipyramids) are investigated through numerical simulations. We find that the quadruple resonance in both nanoparticles shows much higher sensing figure of merit (FOM) than its dipolar counterpart, which is attributed mainly to the reduction in resonance linewidth. More importantly, our results predict that at the same sensing wavelength, the sensing FOM of the quadrupole mode can be significantly boosted from 3.9 for gold nanorods to 7.4 for gold nanobipyramids due to the geometry-dependent resonance linewidth, revealing a useful strategy for optimizing the sensing performance of metal nanoparticles. |
| ISSN | 19317573 |
| Journal | Nanoscale Research Letters |
| Volume Number | 9 |
| PubMed Central reference number | PMC4002906 |
| Issue Number | 1 |
| PubMed reference number | 24791161 |
| e-ISSN | 1556276X |
| DOI | 10.1186/1556-276x-9-187 |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2014-04-22 |
| Access Restriction | Open |
| Rights License | This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. Copyright © 2014 Yong et al.; licensee Springer. |
| Subject Keyword | Localized surface plasmon resonance Gold nanoparticles Refractive index sensing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology Condensed Matter Physics Materials Science |
