Scanning-probe Raman spectroscopy with single-molecule sensitivity

Catalin C. Neacsu; Jens Dreyer; Nicolas Behr; Markus B. Raschke

doi:10.1103/PhysRevB.73.193406

Scanning-probe Raman spectroscopy with single-molecule sensitivity

Catalin C. Neacsu, Jens Dreyer, Nicolas Behr, Markus B. Raschke

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

Abstract

Single-molecule vibrational Raman spectroscopy of malachite green adsorbed on planar metal surfaces is achieved by means of optical local-field enhancement provided by a scanning nanoscopic metallic tip. The single-molecule signature is evident from spectral diffusion and a discretization of Raman peak intensities. The optical tip-sample coupling gives rise to a localization of the response down to a sub-10nm length scale and a Raman enhancement up to ∼5×109. This combines vibrational spectroscopy with high resolution scanning-probe microscopy for ultrasensitive in situ analysis of individual molecules.

Original language	English
Article number	193406
Number of pages	4
Journal	Physical review B
Volume	73
DOIs	https://doi.org/10.1103/PhysRevB.73.193406
Publication status	Published - 1 May 2006

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10.1103/PhysRevB.73.193406

http://journals.aps.org/prb/abstract/10.1103/PhysRevB.73.193406

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title = "Scanning-probe Raman spectroscopy with single-molecule sensitivity",

abstract = "Single-molecule vibrational Raman spectroscopy of malachite green adsorbed on planar metal surfaces is achieved by means of optical local-field enhancement provided by a scanning nanoscopic metallic tip. The single-molecule signature is evident from spectral diffusion and a discretization of Raman peak intensities. The optical tip-sample coupling gives rise to a localization of the response down to a sub-10nm length scale and a Raman enhancement up to ∼5×109. This combines vibrational spectroscopy with high resolution scanning-probe microscopy for ultrasensitive in situ analysis of individual molecules.",

author = "Neacsu, {Catalin C.} and Jens Dreyer and Nicolas Behr and Raschke, {Markus B.}",

year = "2006",

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doi = "10.1103/PhysRevB.73.193406",

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AU - Neacsu, Catalin C.

AU - Dreyer, Jens

AU - Behr, Nicolas

AU - Raschke, Markus B.

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Y1 - 2006/5/1

N2 - Single-molecule vibrational Raman spectroscopy of malachite green adsorbed on planar metal surfaces is achieved by means of optical local-field enhancement provided by a scanning nanoscopic metallic tip. The single-molecule signature is evident from spectral diffusion and a discretization of Raman peak intensities. The optical tip-sample coupling gives rise to a localization of the response down to a sub-10nm length scale and a Raman enhancement up to ∼5×109. This combines vibrational spectroscopy with high resolution scanning-probe microscopy for ultrasensitive in situ analysis of individual molecules.

AB - Single-molecule vibrational Raman spectroscopy of malachite green adsorbed on planar metal surfaces is achieved by means of optical local-field enhancement provided by a scanning nanoscopic metallic tip. The single-molecule signature is evident from spectral diffusion and a discretization of Raman peak intensities. The optical tip-sample coupling gives rise to a localization of the response down to a sub-10nm length scale and a Raman enhancement up to ∼5×109. This combines vibrational spectroscopy with high resolution scanning-probe microscopy for ultrasensitive in situ analysis of individual molecules.

U2 - 10.1103/PhysRevB.73.193406

DO - 10.1103/PhysRevB.73.193406

M3 - Article

VL - 73

JO - Physical review B

JF - Physical review B

SN - 1098-0121

M1 - 193406

ER -

Scanning-probe Raman spectroscopy with single-molecule sensitivity

Abstract

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