Metal nanoparticles generated by laser ablation

Becker, Michael F.; Brock, J. R.; Cai, Hong; Henneke, Dale; Keto, John W.; Lee, Jaemyoung; Nichols, William T.; Glicksman, H. D.

doi:10.1016/s0965-9773(98)00121-4

Cited by 133 publications

(65 citation statements)

References 6 publications

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“…Their strong photonplasmon resonance can be exploited to enhance the optical performance of surfaces [1], for instance, while their large surface area to volume ratio makes then potent catalysts for many chemical reactions including growth of single-walled carbon nanotubes and carbon filaments [2]. Gas-phase synthesis techniques (including laser ablation [3], inert gas condensation [4], and other methods [5]) is an economical way to manufacture large quantities of metal nanoparticles, but since the functionality of these particles depends strongly on their size, there is a pressing need for a diagnostic that can provide real-time particle size measurements throughout the synthesis process.…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamics simulation of thermal accommodation coefficients for laser-induced incandescence sizing of nickel particles

2012

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Section: Introductionmentioning

confidence: 99%

Molecular dynamics simulation of thermal accommodation coefficients for laser-induced incandescence sizing of nickel particles

2012

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“…The production rate varies with helium gas pressure and laser pulse energy [93]. Several workers then employed the laser ablation and gas condensation to produce nanoparticles of metals, metal oxides and metal carbides [94][95][96][97][98][99].…”

Section: Physical Vapor Depositionmentioning

confidence: 99%

Nanocrystalline materials and coatings

Tjong

Chen

2004

Materials Science and Engineering: R: Reports

842

345

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In recent years, near-nano (submicron) and nanostructured materials have attracted increasingly more attention from the materials community. Nanocrystalline materials are characterized by a microstructural length or grain size of up to about 100 nm. Materials having grain size of $0.1 to 0.3 mm are classified as submicron materials. Nanocrystalline materials exhibit various shapes or forms, and possess unique chemical, physical or mechanical properties. When the grain size is below a critical value ($10-20 nm), more than 50 vol.% of atoms is associated with grain boundaries or interfacial boundaries. In this respect, dislocation pile-ups cannot form, and the Hall-Petch relationship for conventional coarse-grained materials is no longer valid. Therefore, grain boundaries play a major role in the deformation of nanocrystalline materials. Nanocrystalline materials exhibit creep and super plasticity at lower temperatures than conventional micro-grained counterparts. Similarly, plastic deformation of nanocrystalline coatings is considered to be associated with grain boundary sliding assisted by grain boundary diffusion or rotation. In this review paper, current developments in fabrication, microstructure, physical and mechanical properties of nanocrystalline materials and coatings will be addressed. Particular attention is paid to the properties of transition metal nitride nanocrystalline films formed by ion beam assisted deposition process. #

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“…5,6 Laser interactions with small particles are also used to produce nanoscale particles and control the particle size and morphology. For example, Becker and coworkers 7,8 irradiated micron particles with 248 nm light to create a traveling shock wave from which fairly spherical nanoparticles were formed. The size distributions of noble metal nanoparticles were modified by UV and visible light.…”

Section: Introductionmentioning

confidence: 99%

Photochemical Interaction of Polystyrene Nanospheres with 193 nm Pulsed Laser Light

et al. 2005

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The photochemical interaction of 193 nm light with polystyrene nanospheres is used to produce particles with a controlled size and morphology. Laser fluences from 0 to 0.14 J/cm 2 at 10 and 50 Hz photofragment nearly monodisperse 110 nm spherical polystyrene particles. The size distributions before and after irradiation are measured with a scanning mobility particle sizer (SMPS), and the morphology of the irradiated particles is examined with a transmission electron microscope (TEM). The results show that the irradiated particles have a smaller mean diameter (∼25 nm) and a number concentration more than an order of magnitude higher than nonirradiated particles. The particles are formed by nucleation of gas-phase species produced by photolytic decomposition of nanospheres. A nondimensional parameter, the photon-to-atom ratio (PAR), is used to interpret the laser-particle interaction energetics.

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Metal nanoparticles generated by laser ablation

Cited by 133 publications

References 6 publications

Molecular dynamics simulation of thermal accommodation coefficients for laser-induced incandescence sizing of nickel particles

Molecular dynamics simulation of thermal accommodation coefficients for laser-induced incandescence sizing of nickel particles

Nanocrystalline materials and coatings

Photochemical Interaction of Polystyrene Nanospheres with 193 nm Pulsed Laser Light

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