The angular dependence and the polarisation of light emitted by surface plasmons on metals due to roughness

Kretschmann, E.

doi:10.1016/0030-4018(72)90026-0

Cited by 131 publications

(67 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…13 As is well known, the enhancement of the Raman signal may be obtained through the resonant excitation of delocalized SPs by using a metallic support. 9 It has been predicted 21 and proved experimentally 13 that there exists an optimum groove depth of the grating for which the Raman efficiency is maximum.…”

Section: Principles and Experimental Detailsmentioning

confidence: 99%

Surface‐enhanced Raman scattering studies on chemically transformed carbon nanotube thin films

Lefrant

Baltog

Baibarac

2005

J Raman Spectroscopy

View full text Add to dashboard Cite

We review our experimental data obtained by Raman spectroscopy on single-walled carbon nanotubes (SWNTs) using surface-enhanced Raman scattering (SERS). We focused on the study of the dependence of the SERS spectra of SWNTs on both the rough metallic substrate type and the film thickness. In particular, we show that degradation of the nanotubes, mainly metallic, occurs for very thin films with the formation of graphitic, fullerene-like or amorphous carbon particles. We show also that SWNTs reacting with H 2 SO 4 form a salt of the hydrogensulfate type similar to that resulting from graphite-H 2 SO 4 interaction. SWNTs exhibit a complicated spectroelectrochemical behavior in aqueous and non-aqueous H 2 SO 4 solutions that depends also on the sweep potential range. We demonstrate that the oxidation-reduction processes have a quasi-reversible or irreversible character. Finally, SERS studies on compressed SWNTs in different host matrices, inorganic and organic, reveal nanotube breaking and that tube fragments may react or not with the host matrix used.

show abstract

Section: Principles and Experimental Detailsmentioning

confidence: 99%

Surface‐enhanced Raman scattering studies on chemically transformed carbon nanotube thin films

Lefrant

Baltog

Baibarac

2005

J Raman Spectroscopy

View full text Add to dashboard Cite

show abstract

“…[28,29] Here we focus the attention on the practical case we studied to optimize a grating to be matched with a commercial AFM probe tip. We realized a diffraction grating consisting of a finite size periodic modulation of a metallic surface realizable by focused ion beam milling and evaporation processes.…”

Section: Surface Plasmon Polariton Generationmentioning

confidence: 99%

Experimental Route to Scanning Probe Hot‐Electron Nanoscopy (HENs) Applied to 2D Material

Giugni

Torre

Allione

et al. 2017

Advanced Optical Materials

View full text Add to dashboard Cite

This paper presents details on a new experimental apparatus implementing the hot electron nanoscopy (HENs) technique introduced for advanced spectroscopies on structure and chemistry in few molecules and interface problems. A detailed description of the architecture used for the laser excitation of surface plasmons at an atomic force microscope (AFM) tip is provided. The photogenerated current from the tip to the sample is detected during the AFM scan. The technique is applied to innovative semiconductors for applications in electronics: 2D MoS2 single crystal and a p‐type SnO layer. Results are supported by complementary scanning Kelvin probe microscopy, traditional conductive AFM, and Raman measurements. New features highlighted by HEN technique reveal details of local complexity in MoS2 and polycrystalline structure of SnO at nanometric scale otherwise undetected. The technique set in this paper is promising for future studies in nanojunctions and innovative multilayered materials, with new insight on interfaces.

show abstract

“…In prospective, CNT arrays can be used for subwavelength focusing and detection, enhancing the radiation efficiency of small sources. PACS numbers: 78.67.Pt, 61.48.De, 77.84.Lf, 41.20.Jb Metal-dielectric nanostructures [1,2] have already brought applications to microscopy and sensing [3] and have the potential for realization of future nanosized optical devices and circuits [4]. In 2003 the authors of [5] noticed the potential of so-called indefinite metamaterials for subwavelength imaging of objects at electrically large distances from them (the concept of such imaging was first introduced in [6]).…”

mentioning

confidence: 99%

Ultrabroadband electromagnetically indefinite medium formed by aligned carbon nanotubes

Nefedov

Tretyakov

2011

Phys. Rev. B

View full text Add to dashboard Cite

Anisotropic materials with different signs of components of the permittivity tensor are called indefinite materials. Known realizations of indefinite media suffer of high absorption losses. We show that periodic arrays of parallel carbon nanotubes (CNTs) can behave as a low-loss indefinite medium in the infrared range. We show that a finite-thickness slab of CNTs supports the propagation of backward waves with small attenuation in an ultra-broad frequency band. In prospective, CNT arrays can be used for subwavelength focusing and detection, enhancing the radiation efficiency of small sources. PACS numbers: 78.67.Pt, 61.48.De, 77.84.Lf, 41.20.Jb Metal-dielectric nanostructures [1,2] have already brought applications to microscopy and sensing [3] and have the potential for realization of future nanosized optical devices and circuits [4]. In 2003 the authors of [5] noticed the potential of so-called indefinite metamaterials for subwavelength imaging of objects at electrically large distances from them (the concept of such imaging was first introduced in [6]). Indefinite metamaterials are artificial uniaxial materials in which the axial and tangential components of the permittivity and permeability tensors have different signs. In these materials the isofrequency surfaces have hyperbolic shape. This results in a possibility to design a "hyperlens", where evanescent near fields are transformed into propagating modes and can be transported at electrically long distances [7].The main challenge on the way to realize this and other effects is in the realization of low-loss indefinite materials. For waves of only one linear polarization (TM-polarized waves with respect to the axis of positive permittivity) it is enough to realize a layer of an indefinite dielectric metamaterial [8], whose permeability is unity and only components of the permittivity tensor have different signs. For the visible range such a metamaterial was designed in [8] as an array of parallel plasmonic (metal) nanowires. Since all plasmonic phenomena are related to strong dissipation, the axial component of the permittivity has a significant imaginary part which strongly restricts the subwavelength imaging property of the hyperlens [8]. In the microwave range, materials with negative permittivity can be realized as arrays of thin metal wires [9,10]. However, if the field varies along the wires, the properties of the structure are more complicated that those of a continuous medium due to strong spatial dispersion [11]. The spatial dispersion can be suppressed partially [12] or even totally [13][14][15]. However, manufacturing of structures [12-15] becomes a challenge already at millimeter waves as dimensions need to be quite small for high-frequency applications. For electromagnetic waves in the THz and mid infrared (MIR) range there are no known structures with an indefinite permittivity tensor. The imaginary and real parts of complex permittivity of metals in this range are of the same order and rather high.Here we show that arrays of metallic carb...

show abstract

The angular dependence and the polarisation of light emitted by surface plasmons on metals due to roughness

Cited by 131 publications

References 9 publications

Surface‐enhanced Raman scattering studies on chemically transformed carbon nanotube thin films

Surface‐enhanced Raman scattering studies on chemically transformed carbon nanotube thin films

Experimental Route to Scanning Probe Hot‐Electron Nanoscopy (HENs) Applied to 2D Material

Ultrabroadband electromagnetically indefinite medium formed by aligned carbon nanotubes

Contact Info

Product

Resources

About