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László Nánai

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Research paper thumbnail of Laser-induced chemical liquid phase deposition of copper from aqueous solutions without reducing agents

Quantum Electronics, 2012

Laser-induced chemical liquid phase deposition of copper without a traditional reducing agent has... more Laser-induced chemical liquid phase deposition of copper without a traditional reducing agent has been used for the first time to obtain conductive patterns on a dielectric surface having a reducing ability. It is shown that phenol-formaldehyde binder of the dielectric (glass fibre) can successfully play the role of a reducing agent in this process. The resulting copper sediments have low

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Research paper thumbnail of On Laser-Induced Damage of Some Alkali-Halide Crystals

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Research paper thumbnail of On Nature of Photoconduction of PSI-NV2O5 Heterostructure

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Research paper thumbnail of Kinetical Investigations of Laser-Induced Photoconduction of V2O5 Single-Crystals

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Research paper thumbnail of Sptarodumica Acta, Vol. 48A, No. 1. pp. 19-24, 1992 0584-8539/92 J5. 00+ 0.00 Printed in Great Britain Pergamon Press pic

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Research paper thumbnail of Laser-Induced Damage of V2O5 Single-Crystals

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Research paper thumbnail of Scanning Electron-Microscopy Examinations of Laser-Stimulated Oxidation of Vanadium Plates

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Research paper thumbnail of Plasma-Chemical Phenomena in the Oxidation of Vanadium in Air by Continuous Radiation of CO//2 Laser

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Research paper thumbnail of Characteristics of laser-heated titanium in a nitrogen atmosphere

ABSTRACT

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Research paper thumbnail of Microcomputer modeling of growth process of single-crystal sheets and fibers

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Research paper thumbnail of Control Procedure for the Shape of a Nd:YAG Cylindrical Bar Created by Edge-Defined Film-Fed Growth as a Function of Pressure

The main purpose of this paper is to give a model-based proof of the fact that the effect of vari... more The main purpose of this paper is to give a model-based proof of the fact that the effect of variations of the pressure p in a furnace can be compensated for by an adequate variation of the pulling rate ν in order to assure a constant diameter of a Nd:YAG cylindrical bar, created from the melt by edge-delivered film-fed growth. It is assumed that the bottom line of the melt/gas meniscus on the die is fixed on the outer edge of the die, and the melt temperature T 0 at the meniscus basis is constant. The (ν,p) couples are found for which the system of differential equations, which governs the evolution of the crystal radius r=r(t) and the meniscus height h=h(t), has an asymptotically stable steady/state solution (r * ,h * ). The set of stable growth region in the (p,ν) plane, the dependencies r * =r * (p,ν), h * =h * (p,ν), and the set S of the couples (p,ν) for which r * (p,ν)=r f (where r f represents the desired radius) are determined. Using the curve S, for a given variation of p ...

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Research paper thumbnail of Laser created plasmas on the surfaces of solids

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Research paper thumbnail of Two-photon absorption in V sub (2) O sub (5) single crystals with Q-switched ruby laser pulses

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Research paper thumbnail of On the mechanism of low threshold optical breakdown plasma ignition in air in front of a solid state surface by pulsed powerful ruby laser irradiation

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Research paper thumbnail of Oxide Layer Growth Dynamics Induced by Lasers

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Research paper thumbnail of Investigation of Optical Discharge Near the Vanadium Pentoxide Surface

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Research paper thumbnail of Chemistry of materials metallization

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Research paper thumbnail of <title>Laser light induced dissipative structures on solid surfaces</title>

1st Intl School on Laser Surface Microprocessing, 1990

The question discussed in this paper are related to the formation of different dissipative struct... more The question discussed in this paper are related to the formation of different dissipative structures on the surface of metals (vanadium) and the bulk of semiconductors (vanadium pentoxide). Two dimensional spatial structures of thermal field arised at laser light induced oxidation of metals in both upper and under surfaces are presented. The observed structures are explained in frames of theory of instabilities connected with temperature dependence of surface tension of melted material Benard and Rayleigh like convections due to temperature gradients caused by laser light. 1.

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Research paper thumbnail of On the kinetics of laser-light-induced oxidation constants of vanadium

Journal of the Less Common Metals, 1989

Etude experimentale du processus d'oxydation de plaques metalliques de vanadium irradiees par... more Etude experimentale du processus d'oxydation de plaques metalliques de vanadium irradiees par un faisceau laser de 30 W

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Research paper thumbnail of Peculiarities of CW-CO2 and yag laser ignition of metals in air

Infrared Physics, 1989

Various mechanisms are proposed to explain the dynamics of laser light induced titanium combustio... more Various mechanisms are proposed to explain the dynamics of laser light induced titanium combustion. Titanium targets 5 x 120 x 0.5 cu mm in size were irradiated by the nonpolarized radiation of a CW YAG laser at different incident beam angles. The onset of combustion was determined by the point of inflection depending on T(t), where T is temperature and t is time.

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Research paper thumbnail of Laser-induced chemical liquid phase deposition of copper from aqueous solutions without reducing agents

Quantum Electronics, 2012

Laser-induced chemical liquid phase deposition of copper without a traditional reducing agent has... more Laser-induced chemical liquid phase deposition of copper without a traditional reducing agent has been used for the first time to obtain conductive patterns on a dielectric surface having a reducing ability. It is shown that phenol-formaldehyde binder of the dielectric (glass fibre) can successfully play the role of a reducing agent in this process. The resulting copper sediments have low

Bookmarks Related papers MentionsView impact

Research paper thumbnail of On Laser-Induced Damage of Some Alkali-Halide Crystals

Bookmarks Related papers MentionsView impact

Research paper thumbnail of On Nature of Photoconduction of PSI-NV2O5 Heterostructure

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Kinetical Investigations of Laser-Induced Photoconduction of V2O5 Single-Crystals

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Sptarodumica Acta, Vol. 48A, No. 1. pp. 19-24, 1992 0584-8539/92 J5. 00+ 0.00 Printed in Great Britain Pergamon Press pic

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Laser-Induced Damage of V2O5 Single-Crystals

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Scanning Electron-Microscopy Examinations of Laser-Stimulated Oxidation of Vanadium Plates

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Plasma-Chemical Phenomena in the Oxidation of Vanadium in Air by Continuous Radiation of CO//2 Laser

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Research paper thumbnail of Characteristics of laser-heated titanium in a nitrogen atmosphere

ABSTRACT

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Research paper thumbnail of Microcomputer modeling of growth process of single-crystal sheets and fibers

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Control Procedure for the Shape of a Nd:YAG Cylindrical Bar Created by Edge-Defined Film-Fed Growth as a Function of Pressure

The main purpose of this paper is to give a model-based proof of the fact that the effect of vari... more The main purpose of this paper is to give a model-based proof of the fact that the effect of variations of the pressure p in a furnace can be compensated for by an adequate variation of the pulling rate ν in order to assure a constant diameter of a Nd:YAG cylindrical bar, created from the melt by edge-delivered film-fed growth. It is assumed that the bottom line of the melt/gas meniscus on the die is fixed on the outer edge of the die, and the melt temperature T 0 at the meniscus basis is constant. The (ν,p) couples are found for which the system of differential equations, which governs the evolution of the crystal radius r=r(t) and the meniscus height h=h(t), has an asymptotically stable steady/state solution (r * ,h * ). The set of stable growth region in the (p,ν) plane, the dependencies r * =r * (p,ν), h * =h * (p,ν), and the set S of the couples (p,ν) for which r * (p,ν)=r f (where r f represents the desired radius) are determined. Using the curve S, for a given variation of p ...

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Research paper thumbnail of Laser created plasmas on the surfaces of solids

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Two-photon absorption in V sub (2) O sub (5) single crystals with Q-switched ruby laser pulses

Bookmarks Related papers MentionsView impact

Research paper thumbnail of On the mechanism of low threshold optical breakdown plasma ignition in air in front of a solid state surface by pulsed powerful ruby laser irradiation

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Oxide Layer Growth Dynamics Induced by Lasers

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Investigation of Optical Discharge Near the Vanadium Pentoxide Surface

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Chemistry of materials metallization

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Research paper thumbnail of <title>Laser light induced dissipative structures on solid surfaces</title>

1st Intl School on Laser Surface Microprocessing, 1990

The question discussed in this paper are related to the formation of different dissipative struct... more The question discussed in this paper are related to the formation of different dissipative structures on the surface of metals (vanadium) and the bulk of semiconductors (vanadium pentoxide). Two dimensional spatial structures of thermal field arised at laser light induced oxidation of metals in both upper and under surfaces are presented. The observed structures are explained in frames of theory of instabilities connected with temperature dependence of surface tension of melted material Benard and Rayleigh like convections due to temperature gradients caused by laser light. 1.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of On the kinetics of laser-light-induced oxidation constants of vanadium

Journal of the Less Common Metals, 1989

Etude experimentale du processus d'oxydation de plaques metalliques de vanadium irradiees par... more Etude experimentale du processus d'oxydation de plaques metalliques de vanadium irradiees par un faisceau laser de 30 W

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Peculiarities of CW-CO2 and yag laser ignition of metals in air

Infrared Physics, 1989

Various mechanisms are proposed to explain the dynamics of laser light induced titanium combustio... more Various mechanisms are proposed to explain the dynamics of laser light induced titanium combustion. Titanium targets 5 x 120 x 0.5 cu mm in size were irradiated by the nonpolarized radiation of a CW YAG laser at different incident beam angles. The onset of combustion was determined by the point of inflection depending on T(t), where T is temperature and t is time.

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