Formation of nanostructures in metals by low-energy ion irradiation

The goal of this work is to investigate self-organization processes in molecular chains. Computer simulation has been performed by means of a molecular dynamics method. Morse potential was chosen as the potential of atomic interaction. Molecular chains were exposed to low-energy ion impact by two means: mono beam and plasma treatment. The amount of the energy transferred to molecules of the chain was varied in a wide range but it must be less than the energy needed to break the chain.We showed that nonlinear oscillations become excited in the chains after low-energy ion impact and as a result of them molecules become stabilized in new positions, which results in the formation and development of new metastable molecular groups (nanoclusters). In homogenous chains formed nanoclusters correspond to elements of "molecular memory".

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“…1a), molecular (fig. We chose a Morse potential as the potential of atomic interaction [3]. 1c) chains of water were under our investigation.…”

Section: Methodsmentioning

confidence: 99%

Self-Organization and Nanocluster Formation Processes in Nonlinear Molecular Chains

Tereshko

Abidzina

Elkin³

et al. 2007

MRS Proc.

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“…The plasma treatment is necessary to change the crystallization mechanism of salts (nitrates) dispersed in the solution. Such a process of fabrication of nanostructures has been described earlier by (Tereshko et al 2007a , b ).…”

Section: Introductionmentioning

confidence: 99%

Non-thermal plasma-driven synthesis of Eu3+:Y2O3 nanosized phosphors

2013

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The synthesis of nanosized phosphors by using the non-thermal plasma-driven method is presented. The method allows to control the average grain size of nanocrystals. The synthesis of Eu3+-doped Y2O3 nanocrystalline phosphors at water solution of nitrates is described. The average sizes of nanocrystals were controlled by sintering temperature. Their structure, morphology, and luminescent properties were investigated.

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“…These reorganizations also take place well below the irradiated surface. When the ion energy decreases by 1 keV, the modified layer became even deeper [7].…”

Section: Introductionmentioning

confidence: 99%

“…For a long period only high energies were assumed to cause any significant modifications. However, low-energy ion bombardments (up to 5 keV) of metal and alloy samples were shown to be very efficient too: the increase of dislocation density (up to 10 mm in depth from the irradiated surface) was detected [3][4][5][6][7]. In fact, a bulk long-range modification of materials in the glow discharge plasma (GDP) took place.…”

Section: Introductionmentioning

confidence: 99%

“…Modelling shows the formation of new collective atom states. The observed phenomena include the redistribution of energy, clusterization, structure formation when the atoms stabilizes in new non-equilibrium positions, localized structures, auto-oscillations, and travelling waves and pulses [3][4][5][6][7]. The next step was to look at the influence of low-energy GDP on liquids.…”

Section: Introductionmentioning

confidence: 99%

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Biomedical Applications of Materials Processed in Glow Discharge Plasma

Tereshko¹,

Gorchakov²,

Tereshko³

et al. 2013

Advances in Biomaterials Science and Biomedical Applications

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was taken for investigation. Water molecules are able to create molecular associates using Van der Waals forces as well as labile hydrogen interactions [ -]. Owing to hydrogen bonds molecules of water are capable to form not only random associates one having no ordered structure but clusters, i.e. associates having some ordered structure [ -]. The network of hydrogen bonds and the high order of intermolecular cooperativity facilitate long-range propagation of molecular excitations [ , ]. This allows, in principle, to consider water and water-based solutions as systems sensitive to weak external forces. Indeed, the study of luminescence at long time scale shows that the structural equilibrium in water is not stable it changes after dissolution of small portions of added substances and after exposition of aqueous samples to UV and mild X-ray irradiation [ ].

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Formation of nanostructures in metals by low-energy ion irradiation

Cited by 10 publications

References 4 publications

Self-Organization and Nanocluster Formation Processes in Nonlinear Molecular Chains

Self-Organization and Nanocluster Formation Processes in Nonlinear Molecular Chains

Non-thermal plasma-driven synthesis of Eu3+:Y2O3 nanosized phosphors

Biomedical Applications of Materials Processed in Glow Discharge Plasma

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