Ultra-Short Pulsed Laser Engineered Metal-Glass Nanocomposites

Stalmashonak, Andrei; Seifert, G.; Abdolvand, Amin

doi:10.1007/978-3-319-00437-2

Cited by 44 publications

(41 citation statements)

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“…A small shoulder is apparent in the 2.0 µJ absorption spectrum, indicating that silver nanoparticle agglomerates form at this pulse energy [43]. The measured SPR peaks were found to agree well with the extinction spectra predicted by Mie's SPR theory [32]. The absorbance of a 36 nm diameter silver particle calculated using Mie's theory is plotted in Fig.…”

Section: Laser Processingsupporting

confidence: 66%

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Characterization of a silica-PVA hybrid for high density and stable silver dissolution

Dorin

Zhu

Parkinson

et al. 2016

Materials Chemistry and Physics

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A silica and polyvinyl alcohol (PVA) hybrid material mixed with a high density of silver ions is synthesised and characterized in this work. The hybrid material can be cast into thick films, which we determined to be homogeneous using Raman spectroscopy. We observed that the silver ions remain stable in the material over time and at temperatures of 100 o C, which represents a marked improvement over previous solid solutions of silver. Differential scanning calorimetry and thermogravimetric analysis indicate the rapid activation of silver at 173 o C, resulting in a dense formation of silver nanoparticles within the hybrid. The activation of silver was also demonstrated in 3-dimensional geometries using femtosecond duration laser pulses. These results illustrate the silica-PVA hybrid is an attractive material for developing silver-insulator composites.

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Section: Laser Processingsupporting

confidence: 66%

“…This method can identify silver nanoparticle SPR absorption peaks in the 400-450 nm wavelength range. The detection of these peaks is strong evidence that solid silver has formed in the sample [32,33]. In some cases X-ray diffraction (XRD) was also used to confirm the presence of solid silver on a Bruker D8Advance diffractometer.…”

Section: Characterizationmentioning

confidence: 99%

Characterization of a silica-PVA hybrid for high density and stable silver dissolution

Dorin

Zhu

Parkinson

et al. 2016

Materials Chemistry and Physics

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“…Blue, green, pink, and yellow areas correspond to the linear (W in < 3 µJ), nonlinear (3 µJ < W in < 4.5 µJ), modification (4.5 µJ < W in < 6.8 µJ), and ablation (W in > 6.8 µJ) regimes, respectively. Insets (1)(2)(3)(4)(5) show SEM images of the irradiated GMN surface for the above energy regions. Red and blue lines indicate the branches where measurements were performed at increasing and decreasing energy of the incident pulse, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Material processing with ultrafast lasers [1][2][3] has become a powerful tool for a number of promising applications including optical memory, 4 microfluidics, 5 and surface wettability control. 6 They rely on the self-organization processes, which can result in the formation of periodic structures on the surface 7 and in the bulk 8 under the irradiation with tightly focused femtosecond pulses.…”

Section: Introductionmentioning

confidence: 99%

“…Optical properties of this glass-metal nanocomposite (GMN) are strongly influenced by the surface plasmon resonance (SPR) at the wavelength of 428 nm that is originated from collective oscillations of conduction electrons in silver nanoparticles. 10 In the studies of femtosecond modification of GMNs, 3,11,12 it has been shown that at the excitation wavelength of 400 nm, the ablation of the GMN is accompanied by the formation of LSF 7 directed perpendicular to the polarization of the laser beam. 11 In contrast, at the excitation wavelength of 532 nm 12 falling out of the SPR region, LSF ripples oriented along the laser beam polarization are formed.…”

Section: Introductionmentioning

confidence: 99%

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The remarkable transformation of nanoripples in glass-metal nanocomposite

et al. 2018

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We report the linear-to-circular transformation of high spatial frequency (HSF) ripples formed on the surface of a glass with embedded silver nanoparticles under irradiation with 120 fs long pulses at the wavelength of 800 nm. In the experiments, at the ablation threshold of 1.28 J/cm2, the HSF ripples with the period of ∼300 nm were oriented along the polarization of the laser beam. However, we found that the nanoripples pattern is gradually transforming from linear to an untypical circular one when the pulse energy increases. The ripples take nearly perfect circular shape at the pulse energy of ∼8.0 μJ, which corresponds to the fluence of 1.5 J/cm2.

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A comprehensive feasibility study on the properties of LDPE‐Ag nanocomposites for food packaging applications

Bumbudsanpharoke¹,

Lee²,

Ko³

2017

Polymer Composites

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The intense recent interest in active food packaging with silver nanoparticles (AgNPs) is attributed to the extraordinary efficacies of the AgNPs against a broadspectrum of food-borne pathogens. A comprehensive study of silver nanocomposites was conducted to identify the effect of the AgNPs on the properties of low-density polyethylene (LDPE) for food packaging applications. The investigation included the study of the optical, thermal, mechanical, and barrier properties, as well as antimicrobial activity against Grampositive and Gram-negative bacteria. Upon addition of AgNPs in LDPE, LDPE-AgNP composite films became less transparent and more yellowish because of surface plasmon resonance vibrations of the AgNPs. The SEM, EDS, and TEM results revealed that spherical AgNPs were distributed on both surface and interior of the LDPE film. While these well-dispersed AgNPs enhanced the barrier properties of LDPE for both oxygen and water vapor, the incorporation of AgNPs impinged onto the thermal properties by reducing the thermal stability and the melting enthalpy of the LDPE film. In addition, LDPE-AgNP composite film showed effective antibacterial activity against Staphylococcus aureus and Escherichia coli. These findings suggest that the LDPE-AgNP composite film can be feasibly used in food packaging to preserve the food quality and extend the shelf-life of the product. POLYM. COM-POS., 00:000-000, used in food packaging to preserve the food quality and extend the shelf-life of the product. POLYM. COMPOS., 39:3178-3186, 2018. FIG. 2. FE-SEM images of surface and cross-sections of neat LDPE and LDPE-AgNP composite films: (a) neat LDPE; (b) LDPE-AgNP 3 ppm; (c) LDPE-AgNP 36 ppm; (d) LDPE-AgNP 75 ppm; and (e) LDPE-AgNP 240 ppm. [Color figure can be viewed at wileyonlinelibrary.com]

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Ultra-Short Pulsed Laser Engineered Metal-Glass Nanocomposites

Cited by 44 publications

References 0 publications

Characterization of a silica-PVA hybrid for high density and stable silver dissolution

Characterization of a silica-PVA hybrid for high density and stable silver dissolution

The remarkable transformation of nanoripples in glass-metal nanocomposite

A comprehensive feasibility study on the properties of LDPE‐Ag nanocomposites for food packaging applications

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