Metallo-dielectric photonic crystals for surface-enhanced raman scattering

Yu Zhao; Xue Jin Zhang; Jing Ye; Li Miao Chen; Shu Ping Lau; Wen Jun Zhang; Shuit Tong Lee

doi:10.1021/nn2001068

Metallo-dielectric photonic crystals for surface-enhanced raman scattering

Yu Zhao, Xue Jin Zhang, Jing Ye, Li Miao Chen, Shu Ping Lau, Wen Jun Zhang, Shuit Tong Lee

Research output: Journal article publication › Journal article › Academic research › peer-review

50 Citations (Scopus)

Abstract

Metallo-dielectric photonic crystals (MDPCs) are used as ultrasensitive molecular detectors for concentrations down to picomolar level based on surface-enhanced Raman spectroscopy (SERS). Calculations show that the amorphous silicon photonic crystals (a-Si PCs) embedded in multiple metallo-dielectric (MD) units can significantly increase the electromagnetic fields at the air-dielectric interface, leading to remarkable Raman enhancement. Corresponding experiments show the multiple MDPC structures can serve as an ultrasensitive SERS substrate with excellent reproducibility and stability, capable of quantitative analysis down to 10 pM level. The MDPC structure can be generalized to other applications, such as plasmonic devices, ultrasensitive sensors, and nanophotonic systems.

Original language	English
Pages (from-to)	3027-3033
Number of pages	7
Journal	ACS Nano
Volume	5
Issue number	4
DOIs	https://doi.org/10.1021/nn2001068
Publication status	Published - 26 Apr 2011

Keywords

electromagnetic field
metallo-dielectric
SERS
silicon
template synthesis

ASJC Scopus subject areas

General Materials Science
General Engineering
General Physics and Astronomy

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10.1021/nn2001068

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title = "Metallo-dielectric photonic crystals for surface-enhanced raman scattering",

abstract = "Metallo-dielectric photonic crystals (MDPCs) are used as ultrasensitive molecular detectors for concentrations down to picomolar level based on surface-enhanced Raman spectroscopy (SERS). Calculations show that the amorphous silicon photonic crystals (a-Si PCs) embedded in multiple metallo-dielectric (MD) units can significantly increase the electromagnetic fields at the air-dielectric interface, leading to remarkable Raman enhancement. Corresponding experiments show the multiple MDPC structures can serve as an ultrasensitive SERS substrate with excellent reproducibility and stability, capable of quantitative analysis down to 10 pM level. The MDPC structure can be generalized to other applications, such as plasmonic devices, ultrasensitive sensors, and nanophotonic systems.",

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AU - Zhao, Yu

AU - Zhang, Xue Jin

AU - Ye, Jing

AU - Chen, Li Miao

AU - Lau, Shu Ping

AU - Zhang, Wen Jun

AU - Lee, Shuit Tong

PY - 2011/4/26

Y1 - 2011/4/26

N2 - Metallo-dielectric photonic crystals (MDPCs) are used as ultrasensitive molecular detectors for concentrations down to picomolar level based on surface-enhanced Raman spectroscopy (SERS). Calculations show that the amorphous silicon photonic crystals (a-Si PCs) embedded in multiple metallo-dielectric (MD) units can significantly increase the electromagnetic fields at the air-dielectric interface, leading to remarkable Raman enhancement. Corresponding experiments show the multiple MDPC structures can serve as an ultrasensitive SERS substrate with excellent reproducibility and stability, capable of quantitative analysis down to 10 pM level. The MDPC structure can be generalized to other applications, such as plasmonic devices, ultrasensitive sensors, and nanophotonic systems.

AB - Metallo-dielectric photonic crystals (MDPCs) are used as ultrasensitive molecular detectors for concentrations down to picomolar level based on surface-enhanced Raman spectroscopy (SERS). Calculations show that the amorphous silicon photonic crystals (a-Si PCs) embedded in multiple metallo-dielectric (MD) units can significantly increase the electromagnetic fields at the air-dielectric interface, leading to remarkable Raman enhancement. Corresponding experiments show the multiple MDPC structures can serve as an ultrasensitive SERS substrate with excellent reproducibility and stability, capable of quantitative analysis down to 10 pM level. The MDPC structure can be generalized to other applications, such as plasmonic devices, ultrasensitive sensors, and nanophotonic systems.

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KW - metallo-dielectric

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KW - silicon

KW - template synthesis

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Metallo-dielectric photonic crystals for surface-enhanced raman scattering

Abstract

Keywords

ASJC Scopus subject areas

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