Polarization properties of porous gold and silver films

Kaganovich, É. B.; Кравченко, С. О.; Максименко, Л. С.; Манойлов, Е. Г.; Matyash, I. E.; Mishchuk, O. N.; Руденко, С. П.; Сердега, Б. К.

doi:10.1134/s0030400x11040126

Cited by 8 publications

(5 citation statements)

References 14 publications

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“…With increasing the distance from the torch axis, a smaller amount of Ag NPs with smaller sizes is formed. Also, the porosity and thickness of the por-Ag film are changed as functions of the distance from the torch axis [14][15][16].…”

Section: Methodsmentioning

confidence: 99%

“…Taking into account the advantages for the SERS substrates of porous films with Ag NP arrays, we have developed the corresponding PLD method that is different as compared to that in [13]. Deposition of Ag NPs is performed from the back low-energy flux of Ag particles on the substrate located in the target plane [14][15][16]. Under these conditions, it is possible to provide formation of silver chemical compounds in the Ag NP shell, which, correspondingly will affect the efficiency of SERS.…”

Section: Introductionmentioning

confidence: 99%

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Micro-Raman study of nanocomposite porous films with silver nanoparticles prepared using pulsed laser deposition

Strelchuk¹

2015

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. Nanocomposite porous films with silver nanoparticle (Ag NP) arrays were prepared by the pulsed laser deposition from the back flux of erosion torch particles in argon atmosphere on the substrate placed at the target plane. Preparation conditions of the films were set by argon pressure, energy density of laser pulses, their amount and substrate position relatively to the torch axis. The films were prepared with gradient thickness, variable Ag NP sizes and distance between them along the length of substrate as well as corresponding maxima in the spectra of local surface plasmon absorption. Plasmon effects of the Raman scattering enhance in the matter of the Ag NP shell gave the opportunity to register the spectral bands caused by an extremely small quantity of silver compounds with oxygen and carbon. The possible nature of individual bands in the Raman spectrum was analyzed. The obtained results are important for interpretation of the Raman spectra of analytes based on the prepared SERS substrates.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Micro-Raman study of nanocomposite porous films with silver nanoparticles prepared using pulsed laser deposition

Strelchuk¹

2015

Semicond. Phys. Quantum Electron. Optoelectron.

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“…In our previous works [20][21][22] by the method of pulsed laser deposition in vacuum the por-Au films were prepared. For these films the local surface plasmon resonance was observed.…”

Section: Introductionmentioning

confidence: 99%

Optical Characterization of SERS Substrates Based on Porous Au Films Prepared by Pulsed Laser Deposition

Strelchuk

Kolomys

Kaganovich

et al. 2015

Journal of Nanomaterials

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The SERS (surface enhanced Raman spectroscopy) substrates based on nanocomposite porous films with gold nanoparticles (Au NPs) arrays were formed using the method of the pulsed laser deposition from the back low-energy flux of erosion torch particles on the glass substrate fixed at the target plain. The dependencies of porosity, and morphology of the surface of the film regions located near and far from the torch axis on the laser ablation regime, laser pulses energy density, their number, and argon pressure in the vacuum chamber, were ascertained. The Au NPs arrays with the controllable extinction spectra caused by the local surface plasmon resonance were prepared. The possibility of the formation of SERS substrates for the detection of the Rhodamine 6G molecules with the concentration 10−10 Mol/L with the enhancement factor 4·107was shown.

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“…It should be noted that the pulsed laser deposition yields films with a thickness of up to 100 nm with spherical pores randomly dispersed in a matrix. Kaganovich et al [30] studied the polarization properties of such structures. In [29,31] these films are shown to have the properties of both planar metal film and nanoparticles, respectively, demonstrating the excitation of surface plasmon-polariton resonance and surface resonance due to local plasmon resonances.…”

Section: Introductionmentioning

confidence: 99%

The optical Tamm states at the interface between a photonic crystal and nanoporous silver

Bikbaev

Vetrov

Timofeev

2016

J. Opt.

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The optical Tamm states (OTSs) localized at the edges of a photonic crystal bounded by a nanoporous silver (NPS) film are investigated. NPS involves spherical vacuum nanopores dispersed in the metal matrix and is characterized by the effective resonance permittivity. The transmission, reflection, and absorption spectra of the structures under study at the normal incidence of light are calculated. It is shown that each Tamm state has its own frequency range where the real part of effective permittivity is negative. The light field localization at the high- and low-frequency OTSs is investigated. The specific features of spectral manifestation of the OTSs are studied in dependence on the nanopore concentration in the metal matrix and on the NPS film thickness.

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Polarization properties of porous gold and silver films

Cited by 8 publications

References 14 publications

Micro-Raman study of nanocomposite porous films with silver nanoparticles prepared using pulsed laser deposition

Micro-Raman study of nanocomposite porous films with silver nanoparticles prepared using pulsed laser deposition

Optical Characterization of SERS Substrates Based on Porous Au Films Prepared by Pulsed Laser Deposition

The optical Tamm states at the interface between a photonic crystal and nanoporous silver

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