Dispersion and shape engineered plasmonic nanosensors

Hyeon-Ho Jeong, Andrew G. Mark, Mariana Alarcón-Correa, Insook Kim, Peter Oswald, Tung-Chun Lee and Peer Fischer ()
Additional contact information
Hyeon-Ho Jeong: Max Planck Institute for Intelligent Systems
Andrew G. Mark: Max Planck Institute for Intelligent Systems
Mariana Alarcón-Correa: Max Planck Institute for Intelligent Systems
Insook Kim: Max Planck Institute for Intelligent Systems
Peter Oswald: Max Planck Institute for Intelligent Systems
Tung-Chun Lee: Max Planck Institute for Intelligent Systems
Peer Fischer: Max Planck Institute for Intelligent Systems

Nature Communications, 2016, vol. 7, issue 1, 1-7

Abstract: Abstract Biosensors based on the localized surface plasmon resonance (LSPR) of individual metallic nanoparticles promise to deliver modular, low-cost sensing with high-detection thresholds. However, they continue to suffer from relatively low sensitivity and figures of merit (FOMs). Herein we introduce the idea of sensitivity enhancement of LSPR sensors through engineering of the material dispersion function. Employing dispersion and shape engineering of chiral nanoparticles leads to remarkable refractive index sensitivities (1,091 nm RIU−1 at λ=921 nm) and FOMs (>2,800 RIU−1). A key feature is that the polarization-dependent extinction of the nanoparticles is now characterized by rich spectral features, including bipolar peaks and nulls, suitable for tracking refractive index changes. This sensing modality offers strong optical contrast even in the presence of highly absorbing media, an important consideration for use in complex biological media with limited transmission. The technique is sensitive to surface-specific binding events which we demonstrate through biotin–avidin surface coupling.

Date: 2016
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/ncomms11331 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11331

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms11331

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().