Nanoscale chemical mapping using three-dimensional adiabatic compression of surface plasmon polaritons

Date

2010-01-01

Author

DE ANGELIS, Francesco
DAS, Gobind
CANDELORO, Patrizio
PATRINI, Maddalena
GALLI, Matteo
Bek, Alpan
LAZZARINO, Marco
MAKSYMOV, Ivan
LIBERALE, Carlo
ANDREANI, Lucio Claudio
DI FABRIZIO, Enzo

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

125
views

0
downloads

The fields of plasmonics, Raman spectroscopy and atomic force microscopy have recently undergone considerable development, but independently of one another. By combining these techniques, a range of complementary information could be simultaneously obtained at a single molecule level. Here, we report the design, fabrication and application of a photonic-plasmonic device that is fully compatible with atomic force microscopy and Raman spectroscopy. Our approach relies on the generation and localization of surface plasmon polaritons by means of adiabatic compression through a metallic tapered waveguide to create strongly enhanced Raman excitation in a region just a few nanometres across. The tapered waveguide can also be used as an atomic force microscope tip. Using the device, topographic, chemical and structural information about silicon nanocrystals may be obtained with a spatial resolution of 7 nm.

Subject Keywords

Raman-spectroscopy, Optical antennas, Diffraction, Scattering

URI

https://hdl.handle.net/11511/32968

Journal

NATURE NANOTECHNOLOGY

DOI

https://doi.org/10.1038/nnano.2009.348

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Surface-enhanced Raman scattering spectroscopy via gold nanostars Nalbant Esentürk, Emren (Wiley, 2009-01-01) Anisotropic metallic nanoparticles (NPs) have unique optical properties, which lend them to applications such as surface-enhanced Raman scattering (SERS) spectroscopy. Star-shaped gold (Au) NPs were prepared in aqueous solutions by the seed-mediated growth method and tested for Raman enhancement using 2-mercaptopyridine (2-MPy) and crystal violet (CV) probing molecules. For both molecules, the SERS activity of the nanostars was notably stronger than that of the spherical Au NPs of similar size. The Raman en...
Nanoscale Structure and Structural Relaxation in Zr50Cu45Al5 Bulk Metallic Glass HWANG, Jinwoo; MELGAREJO, Z. H.; Kalay, Yunus Eren; KALAY, I.; KRAMER, M. J.; STONE, D. S.; VOYLES, P. M. (2012-05-11) Hybrid reverse Monte Carlo simulations of the structure of Zr50Cu45Al5 bulk metallic glass incorporating medium-range structure from fluctuation electron microscopy data and short-range structure from an embedded atom potential produce structures with significant fractions of icosahedral- and crystal-like atomic clusters. Similar clusters group together into nanometer-scale regions, and relaxation transforms crystal-like clusters into icosahedral clusters. A model refined against only the potential does not...
Optical characterization of silicon based hydrogenated amorphous thin films by un-visible and infrared measurements Kılıç, İlker; Katırcıoğlu, Bayram; Department of Physics (2006) Various carbon content hydrogenated amorphous silicon carbide (a-Si1ŁxCx:H) and hydrogenated amorphous silicon (a-Si:H) thin films have been deposited on various substrates by using plasma enhanced chemical vapour deposition (PECVD) technique. Transmission spectra of these films have been determined within UV-Visible region and the obtained data were analysed to find related physical constants such as; refractive indices, thicknesses, etc. Fourier transform infrared (FT-IR) spectrometry technique has been u...
MERCURY SPECIATION BY ELECTROCHEMICAL SEPARATION AND COLD-VAPOR ATOMIC-ABSORPTION SPECTROMETRY ERGUCYENER, C; AYGUN, S; Ataman, Osman Yavuz; TEMIZER, A (1988-01-01) Mercury speciation in aqueous solutions containing inorganic mercury and methylmercury has been demonstrated using electrochemical separation prior to determination by cold-vapour atomic absorption spectrometry. Approximately 95% of the inorganic mercury was electro-deposited on a Pt electrode at –0.1 V, whereas for methylmercury –0.2 V or even more negative potentials were required. Organic mercury was determined by NaBH4 reduction after electrochemical separation. Inorganic mercury was determined in the o...
Optimum number of antenna elements in a sub-array for highest G/T Demir, S (1998-06-26) There are a number of different parallel arm feed topologies which give the same radiation pattern characteristics. On the of her hand, noise temperature and efficiency of those feed structures will possibly, be not the same. In this wort parallel arm feed structures are studied for their noise and efficiency performance using the noise equivalent line length method and an optimum number of antenna elements for a sub-array is obtained by comparing noise temperature and efficiencies of the structures.

Citation Formats

F. DE ANGELIS et al., “Nanoscale chemical mapping using three-dimensional adiabatic compression of surface plasmon polaritons,” NATURE NANOTECHNOLOGY, pp. 67–72, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32968.