Topic
Laser ablation
About: Laser ablation is a research topic. Over the lifetime, 19948 publications have been published within this topic receiving 353475 citations.
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TL;DR: In this paper, laser ablation time-of-flight mass spectroscopy (LA-TOF-MS) was used for the spectrochemical analysis of samples of different dates available in Pakistan.
Abstract: Laser induced breakdown spectroscopy (LIBS) complemented with laser ablation time-of-flight mass spectroscopy (LA-TOF-MS) has been utilized for the spectrochemical analysis of samples of different dates available in Pakistan. The plasma was generated by a focused Q-Switched Nd:YAG laser (532 nm), while a set of four spectrometers were used to capture the optical spectra. For the quantitative analyses of the laser produce plasma, optically thin and local thermodynamic equilibrium conditions were validated. The optical emission spectra of the date samples detected Fe, Ca, Mg, K and Na nutritional elements and Ba, Ti, Sr, Al, Li and Si toxic elements. Same date samples were also quantitatively analysed using an LA-TOF-MS. The results obtained from the LA-TOF-MS and calibration-free LIBS (CF-LIBS) techniques showed an excellent agreement, which proves that both techniques are reliable for the multi-elemental analysis of any date sample.
7 citations
TL;DR: In this paper, a laser-induced backside wet etching of silica glass plates was performed by the excitation of a pure toluene solution with a ns-pulsed KrF excimer laser at 248 nm.
Abstract: Laser-induced backside wet etching of silica glass plates was performed by the excitation of a pure toluene solution with a ns-pulsed KrF excimer laser at 248 nm. Well-defined grid micropattern was fabricated without debris and microcrack around the etched area. To understand the etching mechanism, the formation and propagation of shockwave and bubble were monitored by time-resolved optical microscopy at the interface between the silica glass and the toluene solution after laser irradiation. Transient high-pressure as well as high-temperature generated by UV laser irradiation plays a key role in the etching process.
7 citations
TL;DR: In this article, the performance of electrostatic particle deposition onto the platform of an ETA graphite furnace was investigated by solid sampling employing laser ablation, and the deposition efficiency was investigated with steel, phosphate rock and plastic samples.
7 citations
Patent•
28 Oct 2003
TL;DR: In this paper, the authors proposed a method for manufacturing a nanoparticle of a metal oxide at room temperature with a laser ablation method having a wider diversity of choices of experimental conditions.
Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a nanoparticle of a metal oxide at room temperature with a laser ablation method having a wider diversity of choices of experimental conditions, which overcomes the limits of traditional methods for manufacturing the nanoparticle of the metal oxide, and which, different from the traditional methods, can manufacture the nanoparticle of the metal oxide whose crystal structure and stoichiometry are fully controlled and which contains very few impurities. SOLUTION: The method for manufacturing the nanoparticle of the metal oxide comprises a process of irradiating a laser beam to a solid material used as a raw material in the atmosphere of an inert gas, oxygen or the mixture of the two gases controlled at a pressure of 10 mTorr to the atmospheric pressure in order to vaporize the solid material in a plasma state, and a subsequent process of adiabatically cooling the material in this state in the same atmosphere. The solid material for the raw material is a metal or the metal oxide. The laser beam has spectrum in either an ultraviolet, visible or infra-red region. The inert gas is a noble gas of either helium or argon or the like. COPYRIGHT: (C)2004,JPO
7 citations
TL;DR: In this paper, a 193 nm excimer laser is used to deposit thin films of Y-Ba-Cu-O on sapphire and these films are subsequently annealed to be high-Tc superconducting.
Abstract: A 193 nm excimer laser is used to deposit thin films of Y-Ba-Cu-O on sapphire. These films are subsequently annealed to be high-Tc superconducting. Spectral analysis of a 193 nm laser-induced plume from bulk, non-superconducting and superconducting films of Y-Ba-Cu-O as well as from BaO, CuO and Y2O3 leads to the conclusion that the emissions are from simple atomic and diatomic species. The observations add weight to a recent suggestion that in situ observation of the emission spectra from the laser-induced plumes might be used as a monitor of film properties. A subtle difference between the emissions from bulk, annealed and unannealed films is observed.
7 citations