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
Nanoparticles by Continuous-wave Laser Ablation in Liquid: ab 79 € als Taschenbuch: Generation and Characterisation. Aus dem Bereich: Bücher, Wissenschaft, Technik,
Pulsed Laser Ablation in liquid based synthesis of Nanoparticles ab 78.99 € als Taschenbuch: Synthesis and Optical properties of metal oxide nanoparticles and gold-metal oxide nanocomposites. Aus dem Bereich: Bücher, Wissenschaft, Physik,
Nanoparticles by Continuous-wave Laser Ablation in Liquid: ab 79 EURO Generation and Characterisation
Pulsed Laser Ablation in liquid based synthesis of Nanoparticles ab 79 EURO Synthesis and Optical properties of metal oxide nanoparticles and gold-metal oxide nanocomposites
Noble metals gold NPs are produced by pulsed ("Q-switched, 1064 or 532nm Nd: YAG") laser ablation of gold foil dipped in double distilled water DDW. (PLAL) process is performed with different laser shots such as 25, 50, 75 and 90 pulse at (700 mJ, wavelength 1064 nm and room temperature), laser energy in range (400-700) mJ at (90 pulse, wavelength 1064 and room temperature ), two wavelength (532-1064) nm at (700 mJ,90 pulse, and room temperature) two water's temperature (25-50) Co and liquid depth 9 mm. The effect of these parameters has been studied on structurally, optically and morphologically and investigated by using scanning electron microscopy (SEM), UV-visible spectroscopy and atomic force microscopy (AFM). The absorption spectra of
The organic compounds that emit at different wavelength regions have been selected to study. Fluorescent dyes play an important role for staining and sensoring in analytical chemistry, environmental science, biology and medicine. Some fluorescent dyes are laser active and are used in dye lasers. In recent years the research interests changed from liquid dye lasers to solid state dye lasers.Often organic polymers are used as solid matrices for organic dyes. Semiconducting (conjugated) polymers have properties that make them attractive as the gain material for solid state lasers. Dye lasers utilizing a solid host are very attractive for a wide range of applications. For example, in medicine can use in cardiology for ablation of blood clots, photodynamic therapy for photo-radiation and bio-stimulation, biological field DNA detection and sequencing, remote sensing of atmospheric contaminants, underwater communications, holography, optoelectronic applications.
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.
Ferromagnetic shape-memory (FSM) compounds are actively studied materials due to their large shape changes in an external magnetic field. This makes it possible to realize novel actuators and sensors. For the fabrication of micromechanical components and even microscopic machines, the material should be in thin-film form, and pulsed laser deposition (PLD) is an effective technique to reach this goal. In this thesis, FSM Ni-Mn-Ga films with a thickness of a few hundred nanometers were deposited on different substrates and methods were developed to release the film from its substrate. For efficient ablation, the intensity distribution of the laser beam on the target should be smooth with steep edges. In this work, such a distribution was realized with the help of diffractive optics. Diffractive optics was also applied to directly produce almost propagation-invariant laser beams, so-called Bessel-Gauss beams in laser resonators. Furthermore, Bessel-like laser beams were created as a result of self-focusing in a certain liquid crystal. Such diffraction-free laser beams can be used in precise laser ablation and accurate patterning of small structures in thin films.