Laser Induced Periodic Surface Structures induced by surface plasmons coupled via roughness

Gurevich, Evgeny L.; Gurevich, Svetlana V.

doi:10.1016/j.apsusc.2013.10.141

Cited by 73 publications

(43 citation statements)

References 46 publications

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“…One of the most obvious candidates for the alternative mechanism of the LIPSS formation would be a hydrodynamic instability of the liquid melt on the surface. Indeed, there are many processes, which can cause periodic pattern formation [13][14][15] in thin liquid layers. In [16], a phenomenological approach based on the Kuramoto-Sivashinsky model [17] was proposed.…”

Section: Introductionmentioning

confidence: 99%

Role of the temperature dynamics in formation of nanopatterns upon single femtosecond laser pulses on gold

et al. 2017

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In this paper we investigate whether the periodic structures on metal surfaces exposed to single ultrashort laser pulses can appear due to an instability induced by two-temperature heating dynamics. The results of two-temperature model (TTM) 2D simulations are presented on the irradiation of gold by a single 800 nm femtosecond laser pulse whose intensity is modulated in order to reproduce a small initial temperature perturbation, which can arise from incoming and scattered surface wave interference. The growing (unstable) modes of the temperature distribution along the surface may be responsible for the LIPSS (Laser Induced Periodic Surface Structures) formation.After the end of the laser pulse and before the complete coupling between lattice and electrons occurs, the evolution of the amplitude of the subsequent modulation in the lattice temperature reveals different tendencies depending on the spatial period of the initial modulation.This instability-like behaviour is shown to arise due to the perturbation of the electronic temperature which relaxes slower for bigger spatial periods and thus imparts more significant modulations to the lattice temperature. Small spatial periods of the order of 100 nm and smaller experience stabilization and fast decay from the more efficient lateral heat diffusion which facilitates the relaxation of the electronic temperature amplitude due to in-depth diffusion. An analytical instability analysis of a simplified version of the TTM set of equations supports the lattice temperature modulation behaviour obtained in the simulations and reveals that in-depth diffusion length is a determining parameter in the dispersion relation of unstable modes. Finally it is discussed how the change in optical properties can intensify the modulation-related effects.PACS numbers:

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Section: Introductionmentioning

confidence: 99%

Role of the temperature dynamics in formation of nanopatterns upon single femtosecond laser pulses on gold

et al. 2017

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“…At Figures 1-4 the SEM and AFM images of different nanoscale features on the laser treated surfaces of noble metals-silver, gold, copper Under the mentioned laser processing parameters LIPSS is the most prominent feature for almost all metal surfaces except gold surface, where the LIPSS is in the begging of its self-assembling. For gold surface the observed quasi-regular structure could also be explained by the influence of some hydrodynamic instabilities in the melted substance [14]. Furthermore, all the images demonstrate the presence of the features of nanoscale dimensions on the laser-treated surfaces: for silver surface the average size of nanofeatures is from 25 nm up to 80 nm, for gold surface-from 60 nm up to 200 nm, for copper-from 50 nm up to 250 nm, for tungsten surface-from 30 nm up to 110 nm.…”

Section: Resultsmentioning

confidence: 90%

Formation Conditions and Morphology of Nanoscale Features on the Surfaces of Metals and Alloys under Femtosecond Laser Treatment

Dmitruk¹,

Berezovska²,

Yeshchenko³

et al. 2019

Metallofiz. Noveishie Tekhnol.

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Surface texturing of metals and alloys with Ti: Sapphire femtosecond laser has been carried out in air. The peculiarities of surface patterns formed on the surface of noble metals (silver, gold, copper), refractory metal (tungsten) and metal-semiconductor alloy under ultrashort laser pulses have been studied by means of the surface morphology analysis. The influence of the laser ablation process on the formation of nanoscale features on the laser treated surfaces has been discussed. In the experiments, the low fluence multi-pulse regime near the ablation threshold for studied materials has been realized. The average sizes of nanoscale features formed under ultrashort laser processing on the surface structures have been determined for silver, gold, copper and tungsten. Observed enhancement of Raman signal for some vibrations of Methylene Blue dye adsorbed on laser-induced Ag surface structures demonstrates the possibility of an application of the laser-textured substrates as surface enhanced Raman scattering (SERS) substrates used for biosensing.

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“…Estimates of the laser fluence window for the SPP mechanism of formation of LIPSS on a semiconductor surface reported in [12] give, for example, a narrow range of 0.2-0.5 J/cm 2 . In [27], the temperaturedriven hydrodynamic instabilities in a melted layer were also taken into account to explain the periodic patterning of the surface.…”

Section: Resultsmentioning

confidence: 99%

Self-Organized Structuring of the Surface of a Metal–Semiconductor Composite by Femtosecond Laser Processing

Berezovska¹,

Dmitruk²,

Kalyuzhnyy³

et al. 2018

Ukr. J. Phys.

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Peculiarities of the laser treatment of a composite consisting of a thin film of a metal (gold) on the surface of a semiconductor substrate [silicon (100)] have been studied. Micro- and nanostructurings of the metal-semiconductor composite sample have been achieved by the irradiation of its initial surface with a Ti : sapphire femtosecond laser. Laser ablation leads to the patterning of the surface of the composite with laser-induced periodic surface structures (LIPSS) and the formation of semiconductor nanohills, metal nanoparticles, and/or nanowires on the top of hills. The presence of some nanoscale surface features is confirmed by a low-frequency shift of the silicon phonon band in Raman spectra. Prepared microstructured surface barrier solar cells are characterized by means of scanning electron microscopy, optical spectroscopy, and photoelectric measurements.

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Laser Induced Periodic Surface Structures induced by surface plasmons coupled via roughness

Cited by 73 publications

References 46 publications

Role of the temperature dynamics in formation of nanopatterns upon single femtosecond laser pulses on gold

Role of the temperature dynamics in formation of nanopatterns upon single femtosecond laser pulses on gold

Formation Conditions and Morphology of Nanoscale Features on the Surfaces of Metals and Alloys under Femtosecond Laser Treatment

Self-Organized Structuring of the Surface of a Metal–Semiconductor Composite by Femtosecond Laser Processing

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