Structure, stability and mechanical performance of AlN:Ag nanocomposite films

Lotsari, A.; Dimitrakopulos, G. P.; Kehagias, Th.; Kavouras, P.; Zoubos, H; Κουτσοκέρας, Λουκάς; Patsalas, P.; Komninou, Ph.

doi:10.1016/j.surfcoat.2009.10.033

Cited by 9 publications

(2 citation statements)

References 24 publications

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“…Bigger particles, however, are observed after the second pulse resulting in intense LSPR peak (Figure 4c, green solid line). The lower photon energy at 248 nm and the fact that the pulse duration is shorter than the time required for Ostwald ripening in a cold environment [57,58] (the process is indeed relatively cold because the 248 nm beam is not absorbed by the AlN matrix due to its high fundamental gap) allows for the Ostwald ripening process to take place in two steps: dissolution of particles for the first pulse and reforming of bigger particles close to the surface for the second pulse. Finally, the optical reflectivity spectrum for five pulses (Figure 4c, blue solid line) exhibits a broad LSPR band, resembling the broadening of the LSPR band for two applied pulses at 193 nm (Figure 4b, green solid line), but blue-shifted compared to the band for two pulses of 193 nm indicating a surrounding medium that is less optically dense than AlN (e.g.…”

Section: The Effect Of Laser Wavelengthmentioning

confidence: 99%

Laser Annealing as a Platform for Plasmonic Nanostructuring

Kalfagiannis¹,

Koutsogeorgis²,

ElefteriosLidorikis³

et al. 2017

Nanoplasmonics - Fundamentals and Applications

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Nanoconstruction of metals is a significant challenge for the future manufacturing of plasmonic devices. Such a technology requires the development of ultra-fast, high-throughput and low cost fabrication schemes. Laser processing can be considered as such and can potentially represent an unrivalled tool towards the anticipated arrival of modules based in metallic nanostructures, with an extra advantage: the ease of scalability. Specifically, laser nanostructuring of either thin metal films or ceramic/metal multilayers and composites can result on surface or subsurface plasmonic patterns, respectively, with many potential applications. In this chapter, the photo-thermal processes involved in surface and subsurface nanostructuring are discussed and processes to develop functional plasmonic nanostructures with pre-determined morphology are demonstrated. For the subsurface plasmonic conformations, the temperature gradients that are developed spatially across the metal/dielectric structure during the laser processing can be utilized. For the surface plasmonic nanoassembling, the ability to tune the laser's wavelength to either match the absorption spectral profile of the metal or to be resonant with the plasma oscillation frequency can be utilised, i.e. different optical absorption mechanisms that are size-selective can be probed. Both processes can serve as a platform for stimulating further progress towards the engineering of large-scale plasmonic devices.

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Section: The Effect Of Laser Wavelengthmentioning

confidence: 99%

Laser Annealing as a Platform for Plasmonic Nanostructuring

Kalfagiannis¹,

Koutsogeorgis²,

ElefteriosLidorikis³

et al. 2017

Nanoplasmonics - Fundamentals and Applications

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“…Among the various categories of materials used for coatings, nanocomposites consisting of noble metal inclusions [1][2][3][4][5][6] are of substantial importance due to their particular functionalities that originate from the nanometric dispersion of the metallic phase and offer exceptional potential to control their mechanical behavior [7][8][9], and open perspectives for a variety of applications such as catalysis [10][11][12], biocompatible surfaces [13][14][15][16][17], solar harvesting [18][19][20], and foremost plasmonics [21][22][23][24][25][26][27][28][29]. In particular, the ability of controlling the optical performance via the morphology of the embedded plasmonic nanoparticles (NPs) into the coating and their localized surface plasmon resonance (LSPR) offers also great potential for decorative and ophthalmic coatings [30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Laser-driven structural modifications and diffusion phenomena of plasmonic AlN/Ag stratified films

Delli

Bazioti

Pliatsikas

et al. 2016

Surface and Coatings Technology

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Laser annealing (LA) of AlN/Ag multilayers was proven to be an effective process to control the structure and dispersion of Ag into the AlN resulting in intense coloration via the localized surface plasmon resonance, which is of particular importance for decorative applications.In this work we present a study of the structural changes occurring in various AlN/Ag multilayers after LA, in an effort to establish firm knowledge of the diffusion and re-nucleation mechanisms that occur during the laser process. We investigate the effect of the basic LA parameters, such as the laser wavelength (193 and 248 nm), fluence (400-700 mJ/cm 2 ), pressure (1 and 10 Bar) and number of pulses (1 and 2) and we show that the main processes is the Ag particle enhancement close to the film surface as a result of additive outidiffusion Ag and the formation of nanoparticles of varying size.

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Laser-Based Growth of Nanostructured Thin Films

Patsalas

2011

Nanostructured Materials and Their Applications

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Structure, stability and mechanical performance of AlN:Ag nanocomposite films

Cited by 9 publications

References 24 publications

Laser Annealing as a Platform for Plasmonic Nanostructuring

Laser Annealing as a Platform for Plasmonic Nanostructuring

Laser-driven structural modifications and diffusion phenomena of plasmonic AlN/Ag stratified films

Laser-Based Growth of Nanostructured Thin Films

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