Sub-micron and nanosized features in laser-induced periodic surface structures

Berezovska, N.; Dmitruk, І.; Vovdenko, S.; Yeshchenko, Oleg A.; Teselko, Petro; Dmytruk, Andriy; Blonskyi, I.

doi:10.1007/s12648-018-1323-0

Cited by 7 publications

(3 citation statements)

References 40 publications

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“…Earlier we demonstrated an efficient enhancement of Raman signal for the Ag surfaces treated under the femtosecond laser pulse irradiation in comparison with the non-treated surface [15]. It has been obtained the maximal enhancement factor of 20 for some vibration modes of Rhodamine 6G Rh6G FORMATION CONDITIONS AND MORPHOLOGY OF NANOSCALE FEATURES 1595 0.52 [16].…”

Section: Resultsmentioning

confidence: 83%

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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Section: Resultsmentioning

confidence: 83%

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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“…It should be noted that the formed periodic surfaces also contain some nanofeatures and quasi-gratings of nanoscale dimensions . Nowadays, LIPSS is actively used for the fabrication of SERS/SEF substrates and plasmonic sensors. − The application of LIPSS for the formation of plasmonic cavity may be promising due to the ability of biomolecules to bind to the edges of nanostructures, which leads to a stronger plasmonic enhancement. ,,, …”

Section: Introductionmentioning

confidence: 99%

Laser-Induced Periodic Ag Surface Structure with Au Nanorods Plasmonic Nanocavity Metasurface for Strong Enhancement of Adenosine Nucleotide Label-Free Photoluminescence Imaging

et al. 2020

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The label-free detection of biomolecules by means of fluorescence spectroscopy and imaging is topical. The developed surface-enhanced fluorescence technique has been applied to achieve progress in the label-free detection of biomolecules including deoxyribonucleic acid (DNA) bases. In this study, the effect of a strong enhancement of photoluminescence of 5′-deoxyadenosine-monophosphate (dAMP) by the plasmonic nanocavity metasurface composed of the silver femtosecond laser-induced periodic surface structure (LIPSS) and gold nanorods or nanospheres has been realized at room temperature. The highest value of 1220 for dAMP on the Ag-LIPSS/Au nanorod metasurface has been explained to be a result of the synergetic effect of the generation of hot spots near the sharp edges of LIPSS and Au nanorod tips together with the excitation of collective gap mode of the cavity due to strong near-field plasmonic coupling. A stronger plasmonic enhancement of the phosphorescence compared to the fluorescence is achieved due to a greater overlap of the phosphorescence spectrum with the surface plasmon spectral region. The photoluminescence imaging of dAMP on the metasurfaces shows a high intensity in the blue range. The comparison of Ag-LIPSS/Au nanorod and Ag-LIPSS/Au-nanosphere metasurfaces shows a considerably higher enhancement for the metasurface containing Au nanorods. Thus, the hybrid cavity metasurfaces containing metal LIPSS and nonspherical metal nanoparticles with sharp edges are promising for high-sensitive label-free detection and imaging of biomolecules at room temperature.

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“…For a metal surface, it is SPP-excited by the scattering of the laser wave on the surface roughness. LIPSSs have a lot of perspective applications that vary from laser marking and surface processing to the fabrication of SERS/SEF substrates and plasmonic sensors. − Recent applications are based on the idea of using periodic structures for the grating-assisted excitation of SPPs. It is closely related to the interpretation of LIPSSs as a result of the interference between the incident plane wave and SPP.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Nanocavity Metasurface Based on Laser-Structured Silver Surface and Silver Nanoprisms for the Enhancement of Adenosine Nucleotide Photoluminescence

Yeshchenko

Kudrya

Tomchuk

et al. 2019

ACS Appl. Nano Mater.

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A reliable photoluminescence (PL) spectroscopy and imaging of biomolecules at room temperature is a challenging and important problem of biophysics, biochemistry, and molecular genetics. A unique effect of strong plasmonic enhancement of the PL by metal nanostructures is one of the most effective approaches for this purpose. The highest enhancement is provided by metal nanostructures with densely packed sharp tips, periodically arranged metal nanostructures, and plasmonic cavities. All of these features have been realized in the plasmonic cavity metasurface based on the silver (Ag) laser-induced periodic surface structure and Ag triangular nanoprisms studied in the present work. The strong plasmon-enhanced PL of 5′-deoxyadenosine monophosphate deposited on such metasurfaces has been revealed at room temperature. The observed enhancement of more than 1000-fold has been interpreted as a result of synergetic action of the generation of a high concentration of hot spots near the sharp edges of the laser-induced surface structure and nanoprisms together with excitation of the collective gap mode of the cavity due to strong near-field plasmonic coupling. Correspondingly, the plasmonic cavity metasurfaces consisting of metal laser-induced periodic surface structures and nonspherical metal nanoparticles with sharp edges have been shown to be crucial for the highly sensitive detection and imaging of biomolecules at room temperature without consuming any dye labels.

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Sub-micron and nanosized features in laser-induced periodic surface structures

Cited by 7 publications

References 40 publications

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

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

Laser-Induced Periodic Ag Surface Structure with Au Nanorods Plasmonic Nanocavity Metasurface for Strong Enhancement of Adenosine Nucleotide Label-Free Photoluminescence Imaging

Plasmonic Nanocavity Metasurface Based on Laser-Structured Silver Surface and Silver Nanoprisms for the Enhancement of Adenosine Nucleotide Photoluminescence

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