Nanostructured Gold Thin Films Prepared by Pulsed Laser Deposition

Irissou, Éric; Drogoff, Boris Le; Chaker, M.; Trudeau, Michel L.; Guay, Daniel

doi:10.1557/jmr.2004.0123

Cited by 8 publications

(13 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For deposition under He atmosphere (Figure 1b), a porous film is clearly observed, with a cauliflower-like topology. With the increasing background pressure, a plume confinement and therefore a decrease in the velocity of the ablated species occurs, leading to the formation of a porous films [38,39]. This modification of carbon film morphology is in agreement with RBS measurements showing that the mass density of the film decreases from 1.9 g/cm 3 to 0.16 g/cm 3 when the back- ground pressure increases from vacuum to 1 mbar of He (Table I) In conclusion, we assume that the effect of helium pressure is weak on the amorphous carbon structure but significant on the mass density [40].…”

Section: B Deposition Of Thin Films By Nanosecond Pulsed Laser Ablationmentioning

confidence: 99%

Revisiting thin film of glassy carbon

Diaf

Péreira

Melinon

et al. 2020

Phys. Rev. Materials

View full text Add to dashboard Cite

Glassy carbon (GC) is a chemically stable form of fully sp 2-bonded carbon with locally ordered domains. GC is the intermediate material between graphite and diamond combining various properties such as high temperature resistance, hardness, good electrical conductivity, low density, low gases and liquids permeability and excellent resistance to a wide range of aggressive chemical environments. These characteristics make it a very promising material for many applications, but unfortunately it is not widely used because of the high temperatures required for its synthesis. In this work, synthesis of glassy carbon thin films by means of laser ablation of carbon targets under vacuum or in gaseous helium, followed by a nanosecond laser irradiation of the deposited films, is presented. In particular, it is demonstrated that the amorphous structure of a thin film can be efficiently modified to the one of glassy carbon film by nanosecond UV laser irradiation. This method is valuable to prepare thin films similar to commercial glassy carbon with a completely different route which does not require the application of temperature beyond 1000 o C which is not compatible with the silicon substrate for example. This opens for glassy carbon the way to microengineering applications (mechanics, electronics.. .). A particular attention is paid to characterize the vitreous carbon. In the literature, the vitreous nature of a carbon layers is often highlighted on the basis of Raman spectroscopy measurements. However, as the Raman spectrum of glassy carbon is similar to that of pyro-carbon, multiwall carbon nanotubes or functional graphene, this technique is not sufficient to safely characterize a carbonaceous material with a high degree of allotropy. To clear up any doubts, additional characterization methods, such as X-ray spectroscopy, transmission electron microscopy and Rutherford backscattering spectrometry, are discussed here.

show abstract

Section: B Deposition Of Thin Films By Nanosecond Pulsed Laser Ablationmentioning

confidence: 99%

Revisiting thin film of glassy carbon

Diaf

Péreira

Melinon

et al. 2020

Phys. Rev. Materials

View full text Add to dashboard Cite

show abstract

“…A study correlating the gold film structure and morphology with plasma expansion parameters (i.e. kinetic energy of the species) was reported by Irissou et al 20 The Au films were thus deposited under two distinct deposition conditions by changing both the background pressure and the target to the substrate distance (d t-s = 4 cm and 2 cm under vacuum and 3 mbar of helium, respectively). Fig.…”

Section: Device Preparation and Characterizationmentioning

confidence: 99%

Low-absorption, multi-layered scintillating material for high resolution real-time X-ray beam analysis

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Besides typical wet-chemical approaches [2, 3], polymer-metal nanocomposites were prepared by the thermal evaporation of metals on polymer substrates [4], metal-ion implantation in polymers [5], and the simultaneous plasma polymerization and metal evaporation methods [6]. In this study we prepared the gold-polymer nanocomposites using the pulsed laser deposition (PLD) technique.So far, a number of materials have been used as substrates for the PLD of noble metals including metal oxides [7], silicon or glass substrates [8][9][10], and polymers [8,11,12]. Typically, at lower values of volume concentration of the metallic phase in the matrix, the PLD produces well separated particles with narrow size distributions.…”

mentioning

confidence: 99%

“…So far, a number of materials have been used as substrates for the PLD of noble metals including metal oxides [7], silicon or glass substrates [8][9][10], and polymers [8,11,12]. Typically, at lower values of volume concentration of the metallic phase in the matrix, the PLD produces well separated particles with narrow size distributions.…”

mentioning

confidence: 99%

See 1 more Smart Citation

PS‐NH₂ + PMMA‐COOH blend: A promising substrate material for the deposition of densely packed gold nanoparticles

Božanić

Ivković

Bibić

et al. 2010

Physica Rapid Research Ltrs

View full text Add to dashboard Cite

The preparation of nanocomposite structures consisting of polymers and metallic nanoparticles is of considerable interest for a variety of functional applications [1]. However, the unique properties of these nanomaterials are largely governed by the size, shape and configurations of the nano-clusters distributed in a matrix. For this reason, different preparation methods were introduced with the attempt to change and control the form and structure of such nanoparticle assemblies. Besides typical wet-chemical approaches [2, 3], polymer-metal nanocomposites were prepared by the thermal evaporation of metals on polymer substrates [4], metal-ion implantation in polymers [5], and the simultaneous plasma polymerization and metal evaporation methods [6]. In this study we prepared the gold-polymer nanocomposites using the pulsed laser deposition (PLD) technique.So far, a number of materials have been used as substrates for the PLD of noble metals including metal oxides [7], silicon or glass substrates [8][9][10], and polymers [8,11,12]. Typically, at lower values of volume concentration of the metallic phase in the matrix, the PLD produces well separated particles with narrow size distributions. However, at higher amounts of deposited material the proximity of the nanoparticles leads to their coalescence, which impairs the control of particle sizes inherent to PLD. To address this problem several methods were suggested. For example, Röder and Krebs [11] used the pre-deposition of more reactive metals that act as nucleation centers for the nanoparticle growth, while Resta et al. [13] sharpened the shape distribution of metal nanoparticles using laser irradiation. Here we show that the dense packing of gold nanoparticles can be achieved in a simple manner if a blend of the amino-terminated polystyrene (PS-NH 2 ) and carboxylterminated polymethylmethacrylate (PMMA-COOH) is used as a PLD substrate. It should be emphasized that the preparation of this type of nanostructures with densely packed, monodispersed, and supported metallic nanoparticles is of importance for a number of applications such as surface enhanced vibrational spectroscopy substrates [9] or I -V switches [14].PS-NH 2 (M n = 29 000 g/mol, PD = 1.4) and PMMA-COOH (M n = 26 800 g/mol, PD = 1.18) have been synthesized by ATRP [15] and RAFT [16], respectively. 15 µm thick films of the pure PS, PS-NH 2 , PMMA-COOH or of the (PS-NH 2 + PMMA-COOH) blend (1 :1 by weight) used for the Au deposition were prepared by solution casting on Densely packed gold nanoparticles with narrow size distribution were fabricated by pulsed laser deposition using a blend of amino-terminated polystyrene (PS-NH 2 ) and carboxylterminated polymethylmethacrylate (PMMA-COOH) as a deposition substrate. Transmission electron microscopy showed spherical Au nanoparticles with an average size of 5 nm. UV-vis absorption spectra of the Au/blend nanocomposite films exhibited a strong resonance band at 658 nm. The analyses of the spectrum using the effective medium Bergman theory showed that the nano...

show abstract

Nanostructured Gold Thin Films Prepared by Pulsed Laser Deposition

Cited by 8 publications

References 23 publications

Revisiting thin film of glassy carbon

Revisiting thin film of glassy carbon

Low-absorption, multi-layered scintillating material for high resolution real-time X-ray beam analysis

PS‐NH₂ + PMMA‐COOH blend: A promising substrate material for the deposition of densely packed gold nanoparticles

Contact Info

Product

Resources

About

Nanostructured Gold Thin Films Prepared by Pulsed Laser Deposition

Cited by 8 publications

References 23 publications

Revisiting thin film of glassy carbon

Revisiting thin film of glassy carbon

Low-absorption, multi-layered scintillating material for high resolution real-time X-ray beam analysis

PS‐NH2 + PMMA‐COOH blend: A promising substrate material for the deposition of densely packed gold nanoparticles

Contact Info

Product

Resources

About

PS‐NH₂ + PMMA‐COOH blend: A promising substrate material for the deposition of densely packed gold nanoparticles