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Laser ablation

About: Laser ablation is a research topic. Over the lifetime, 19948 publications have been published within this topic receiving 353475 citations.


Papers
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Journal ArticleDOI
09 Jan 1998-Science
TL;DR: Studies carried out with different conditions and catalyst materials confirmed the central details of the growth mechanism and suggest that well-established phase diagrams can be used to predict rationally catalyst materials and growth conditions for the preparation of nanowires.
Abstract: A method combining laser ablation cluster formation and vapor-liquid-solid (VLS) growth was developed for the synthesis of semiconductor nanowires. In this process, laser ablation was used to prepare nanometer-diameter catalyst clusters that define the size of wires produced by VLS growth. This approach was used to prepare bulk quantities of uniform single-crystal silicon and germanium nanowires with diameters of 6 to 20 and 3 to 9 nanometers, respectively, and lengths ranging from 1 to 30 micrometers. Studies carried out with different conditions and catalyst materials confirmed the central details of the growth mechanism and suggest that well-established phase diagrams can be used to predict rationally catalyst materials and growth conditions for the preparation of nanowires.

4,405 citations

Journal ArticleDOI
21 Aug 1997-Nature
TL;DR: In this article, it was shown that the growth mechanism for SWNTs must be independent of the details of the technique used to make them, and that the ready availability of large amounts of SWNT can make them much more accessible for further study.
Abstract: Single-walled carbon nanotubes (SWNTs) offer the prospect of both new fundamental science and useful (nano)technological applications1. High yields (70–90%) of SWNTs close-packed in bundles can be produced by laser ablation of carbon targets2. The electric-arc technique used to generate fullerenes and multi-walled nanotubes is cheaper and easier to implement, but previously has led to only low yields of SWNTs3,4. Here we show that this technique can generate large quantities of SWNTs with similar characteristics to those obtained by laser ablation. This suggests that the (still unknown) growth mechanism for SWNTs must be independent of the details of the technique used to make them. The ready availability of large amounts of SWNTs, meanwhile, should make them much more accessible for further study.

2,568 citations

Journal ArticleDOI
TL;DR: Theoretical models and qualitative explanations of experimental results are presented in this paper for femtosecond laser ablation of solid targets by 0.2-5000 ps Ti: Sapphire laser pulses.
Abstract: Laser ablation of solid targets by 0.2–5000 ps Ti: Sapphire laser pulses is studied. Theoretical models and qualitative explanations of experimental results are presented. Advantages of femtosecond lasers for precise material processing are discussed and demonstrated.

2,513 citations

Book
01 Jan 1996
TL;DR: In this paper, the authors provide an overview and fundamentals of Lasers in Medicine, Biotechnology and Arts: Lasers In Medicine and Biotechnology, Restoration and Conservation of Artworks.
Abstract: Part I Overview and Fundamentals: Introduction.- Thermal, Photophysical, and Photochemical Processes.- Reaction Kinetics and Transport of Species.- Nucleation and Cluster Formation.- Lasers, Experimental Aspects, Spatial Confinement.- Part II Temperature Distributions and Surface Melting: General Solutions of the Heat Equations.- Semi-infinite Substrates.- Infinite Slabs.- Non-uniform Media.- Surface Melting.- Part III Material Removal: Vaporization, Plasma Formation.- Nanosecond-Laser Ablation.- Ultrashort-Pulse Laser Ablation.- Etching of Metals and Insulators.- Etching of Semiconductors.- Part IV Material Deposition: Laser-CVD of Microstructures.- Growth of Fibers.- Direct Writing.- Thin-Film Formation by Laser-CVD.- Adsorbed Layers, Laser-MBE.- Liquid-Phase Deposition, Electroplating.- Thin-Film Formation by Pulsed-Laser Deposition and Laser-Induced Evaporation.- Part V Material Transformations, Synthesis and Structure Formation: Material Transformations, Laser Cleaning.- Doping.- Cladding, Alloying, and Synthesis.- Oxidation, Nitridation, and Reduction.- Transformation and Functionalization of Organic Materials.- Instabilities and Structure Formation.- Part VI Diagnostic Techniques, Plasmas: Diagnostic Techniques.- Analysis of Species and Plasmas,- Part VII Lasers in Medicine, Biotechnology and Arts: Lasers in Medicine and Biotechnology.- Restoration and Conservation of Artworks.

2,359 citations

Journal ArticleDOI
TL;DR: In this paper, the authors discuss data acquisition and reduction considerations in LA-ICP-MS analysis and suggest optimum data acquisition parameters for time-resolved data acquisition, sensitivity calibration is obtained from reference materials with known analyte concentrations and naturally occurring internal standards are used to correct for the multiplicative correction factors.
Abstract: Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) produces complex, time-dependent signals. These require significantly different treatment both during data acquisition and reduction from the more steady-state signals produced by solution sample introduction. This paper discusses, in detail, data acquisition and reduction considerations in LA-ICP-MS analysis. Optimum data acquisition parameters are suggested. Equations are derived for the calculation of sample concentrations and LOD when time-resolved data acquisition is employed, sensitivity calibration is obtained from reference materials with known analyte concentrations and naturally occurring internal standards are used to correct for the multiplicative correction factors of drift, matrix effects and the amount of material ablated and transported to the ICP.

1,408 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023478
2022975
2021621
2020738
2019773
2018737