Single molecule directivity enhanced raman scattering using nanoantennas

Aftab Ahmed; Reuven Gordon

doi:10.1021/nl301029e

Single molecule directivity enhanced raman scattering using nanoantennas

Aftab Ahmed, Reuven Gordon

Research output: Contribution to journal › Article › peer-review

98 Scopus citations

Abstract

Single molecule detection by directivity enhanced Raman scattering is demonstrated using nanoantennas. Bianalyte Raman scattering is used to confirm the detection of single molecules of Rhodamine 6G and Nile Blue A in aqueous solution. Calculations show that Raman enhancement factors of 10 ¹³ can be achieved by combined optimization of the local field enhancement (hotspot with 10 ¹¹ enhancement) and antenna directionality (with 10 ² enhancement).

Original language	English (US)
Pages (from-to)	2625-2630
Number of pages	6
Journal	Nano letters
Volume	12
Issue number	5
DOIs	https://doi.org/10.1021/nl301029e
State	Published - May 9 2012
Externally published	Yes

Keywords

directivity
Nanoantenna
SERS
single molecule detection

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10.1021/nl301029e

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abstract = "Single molecule detection by directivity enhanced Raman scattering is demonstrated using nanoantennas. Bianalyte Raman scattering is used to confirm the detection of single molecules of Rhodamine 6G and Nile Blue A in aqueous solution. Calculations show that Raman enhancement factors of 10 13 can be achieved by combined optimization of the local field enhancement (hotspot with 10 11 enhancement) and antenna directionality (with 10 2 enhancement).",

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AB - Single molecule detection by directivity enhanced Raman scattering is demonstrated using nanoantennas. Bianalyte Raman scattering is used to confirm the detection of single molecules of Rhodamine 6G and Nile Blue A in aqueous solution. Calculations show that Raman enhancement factors of 10 13 can be achieved by combined optimization of the local field enhancement (hotspot with 10 11 enhancement) and antenna directionality (with 10 2 enhancement).

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KW - Nanoantenna

KW - SERS

KW - single molecule detection

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