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Pulsed Laser Ablation of Solids
131,99 € *
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The book introduces 'the state of the art' of pulsed laser ablation and its applications. It is based on recent theoretical and experimental studies. The book reaches from the basics to advanced topics of pulsed laser ablation. Theoretical and experimental fundamental phenomena involved in pulsed laser ablation are discussed with respect to material properties, laser wavelength, fluence and intensity regime of the light absorbed linearly or non-linearly in the target material. The energy absorbed by the electrons leads to atom/molecule excitation, ionization and/or direct chemical bond breaking and is also transferred to the lattice leading to material heating and phase transitions. Experimental non-invasive optical methods for analyzing these phenomena in real time are described. Theoretical models for pulsed laser ablation and phase transitions induced by laser beams and laser-vapour/plasma interaction during the plume expansion above the target are also presented. Calculations of the ablation speed and dimensions of the ablated micro- and nano-structures are performed. The validity and required refinement of different models in different experimental conditions is provided. The pulsed laser deposition process which bases on collecting the ablated particles on a surface is analyzed in terms of efficiency and quality of the deposited films as a function of ambient conditions, target material, laser parameters and substrate characteristics. The interaction between the incident laser and the ablation plasma is analyzed with respect to its influence on the structures of the deposited films and its capacity to generate high harmonics and single attosecond pulses which are highly desirable in pump-probe experiments.

Anbieter: Dodax AT
Stand: 27.01.2020
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Pulsed Laser Ablation in liquid based synthesis...
81,30 € *
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The pulsed laser ablation in liquid media (PLAL) is a rapidly emerging technique in material science for fabricating metal and metal-oxide nanoparticles. The advantage of this method over the conventional chemical methods is the lower cost, high purity and absence of defects in the formed nanoparticles (NPs). The technique requires the minimum amount of chemical species for synthesis compared to the conventional chemical process and provides greater flexibility in controlling the properties of NPs by suitable choice of laser parameters and liquid medium. This work discuss effect of various laser parameters, surrounding liquid and surfactants on synthesized metal oxide nanostructures. Different approaches to extend PLAL technique to multicomponent material fabrication has been discussed. These multicomponent nanocomposites exhibit modified optical properties, enhanced stability and functionalities.

Anbieter: Dodax AT
Stand: 27.01.2020
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Pulsed Laser Ablation in liquid based synthesis...
79,00 € *
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The pulsed laser ablation in liquid media (PLAL) is a rapidly emerging technique in material science for fabricating metal and metal-oxide nanoparticles. The advantage of this method over the conventional chemical methods is the lower cost, high purity and absence of defects in the formed nanoparticles (NPs). The technique requires the minimum amount of chemical species for synthesis compared to the conventional chemical process and provides greater flexibility in controlling the properties of NPs by suitable choice of laser parameters and liquid medium. This work discuss effect of various laser parameters, surrounding liquid and surfactants on synthesized metal oxide nanostructures. Different approaches to extend PLAL technique to multicomponent material fabrication has been discussed. These multicomponent nanocomposites exhibit modified optical properties, enhanced stability and functionalities.

Anbieter: Dodax
Stand: 27.01.2020
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Synthesis of monodisperse FePt nanoparticles by...
40,00 € *
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The continuous drive to further miniaturization is one of the basic research and development goals in industry producing data processing and storage devices, for reasons of economy, performance and energy minimisation. Modern magnetic hard drives have storage densities of hundreds of GBits / in² , but future storage devices are required to reach values of over 1 TBits/ in². Ideally, a single domain magnetic nanoparticle could represent a single data bit. A main issue for reaching this is the thermal stability of magnetisation if the superparamagnetic limit is reached. The most promising material is the bimetallic alloy FePt which offers large magnetic anisotropy due the presence of the ordered face centered tetragonal phase. In the frame of this objective a synthesis process by means of the physical approach of evaporation and recondensation in the gas phase was developed and optimized. Thereby ns-Pulsed Laser Ablation was applied on a FePt rod inside a vacuum-tight facility. The FePt nanoparticles were size selected by means of a Differential Mobility Analyzer and annealed in order to obtain desired spherical shape and magnetic properties.

Anbieter: Dodax AT
Stand: 27.01.2020
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Synthesis of monodisperse FePt nanoparticles by...
38,90 € *
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The continuous drive to further miniaturization is one of the basic research and development goals in industry producing data processing and storage devices, for reasons of economy, performance and energy minimisation. Modern magnetic hard drives have storage densities of hundreds of GBits / in² , but future storage devices are required to reach values of over 1 TBits/ in². Ideally, a single domain magnetic nanoparticle could represent a single data bit. A main issue for reaching this is the thermal stability of magnetisation if the superparamagnetic limit is reached. The most promising material is the bimetallic alloy FePt which offers large magnetic anisotropy due the presence of the ordered face centered tetragonal phase. In the frame of this objective a synthesis process by means of the physical approach of evaporation and recondensation in the gas phase was developed and optimized. Thereby ns-Pulsed Laser Ablation was applied on a FePt rod inside a vacuum-tight facility. The FePt nanoparticles were size selected by means of a Differential Mobility Analyzer and annealed in order to obtain desired spherical shape and magnetic properties.

Anbieter: Dodax
Stand: 27.01.2020
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Bajaj, Geetika: Pulsed Laser Ablation in liquid...
79,00 € *
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Erscheinungsdatum: 08/2012, Medium: Taschenbuch, Einband: Kartoniert / Broschiert, Titel: Pulsed Laser Ablation in liquid based synthesis of Nanoparticles, Titelzusatz: Synthesis and Optical properties of metal oxide nanoparticles and gold-metal oxide nanocomposites, Autor: Bajaj, Geetika, Verlag: LAP Lambert Academic Publishing, Sprache: Englisch, Rubrik: Physik // Astronomie, Sonstiges, Seiten: 252, Informationen: Paperback, Gewicht: 400 gr, Verkäufer: averdo

Anbieter: averdo
Stand: 27.01.2020
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Stafe, Mihai: Pulsed Laser Ablation of Solids
116,49 € *
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Erscheinungsdatum: 21.11.2013, Medium: Buch, Einband: Gebunden, Titel: Pulsed Laser Ablation of Solids, Titelzusatz: Basics, Theory and Applications, Autor: Stafe, Mihai // Marcu, Aurelian // Puscas, Niculae, Verlag: Springer-Verlag GmbH // Springer Berlin, Sprache: Englisch, Schlagworte: Festkörperphysik // Elektrizität // Elektromagnetismus // Magnet // physikalisch // Magnetismus // Physik // Chemie // Physikalische Chemie // Oberfläche // Materialwissenschaft // Mathematik // Laser // Optik // SCIENCE // Physics // Condensed Matter // Magnetismus und Elektromagnetismus // Mathematische Physik // Angewandte Physik // Oberflächenchemie und Adsorption // Optische Physik, Rubrik: Theoretische Physik, Seiten: 233, Abbildungen: 140 illus., 11 illus. in color., 129 schwarz-weiße und 11 farbige Abbildungen, Herkunft: NIEDERLANDE (NL), Reihe: Springer Series in Surface Sciences (Nr. 53), Gewicht: 555 gr, Verkäufer: averdo

Anbieter: averdo
Stand: 27.01.2020
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Characterization of Femtosecond Laser Ablation ...
60,70 € *
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A novel femtosecond micromachining workstation that permits real-time measurement of ablation depth and transient reflectivity is demonstrated. This instrumentation is used to characterize two processes: micromachining of thin metal films, and laser induced forward transfer (LIFT). Spectral interferometry was incorporated in a femtosecond micromachining system to enable real-time visualization of micromachined features as they are written into thin metal films-low energy(pJ) femtosecond oscillator pulses are used to probe the sample as it is cut by high energy (uJ) pulses. Sub-wavelength depths are readily resolved using this technique, making it possible to monitor the integrity of micromachined structures as they are created. This technique can also be employed to characterize interesting processes such as laser induced forward transfer (LIFT) of thin metal films. LIFT essentially involves using a pulsed laser to pattern a structure by deposition as opposed to ablation. Using modest numerical apertures (0.65 or less) we have been able to produce submicron features using this method of femtosecond pulsed laser deposition.

Anbieter: Dodax AT
Stand: 27.01.2020
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Characterization of Femtosecond Laser Ablation ...
59,00 € *
ggf. zzgl. Versand

A novel femtosecond micromachining workstation that permits real-time measurement of ablation depth and transient reflectivity is demonstrated. This instrumentation is used to characterize two processes: micromachining of thin metal films, and laser induced forward transfer (LIFT). Spectral interferometry was incorporated in a femtosecond micromachining system to enable real-time visualization of micromachined features as they are written into thin metal films-low energy(pJ) femtosecond oscillator pulses are used to probe the sample as it is cut by high energy (uJ) pulses. Sub-wavelength depths are readily resolved using this technique, making it possible to monitor the integrity of micromachined structures as they are created. This technique can also be employed to characterize interesting processes such as laser induced forward transfer (LIFT) of thin metal films. LIFT essentially involves using a pulsed laser to pattern a structure by deposition as opposed to ablation. Using modest numerical apertures (0.65 or less) we have been able to produce submicron features using this method of femtosecond pulsed laser deposition.

Anbieter: Dodax
Stand: 27.01.2020
Zum Angebot