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Title: Laser-material interaction during atom probe tomography of oxides with embedded metal nanoparticles

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4966122· OSTI ID:1339868
 [1];  [1];  [2];  [1]
  1. Univ. et INSA de Rouen - UMR CNRS 6634 - Normandie Univ., Saint Etienne du Rouvray (France)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Here, oxide-supported metal nano-particles are of great interest in catalysis but also in the development of new large-spectrum-absorption materials. The design of such nano materials requires three-dimensional characterization with a high spatial resolution and elemental selectivity. The laser assisted Atom Probe Tomography (La-APT) presents both these capacities if an accurate understanding of laser-material interaction is developed. In this paper, we focus on the fundamental physics of field evaporation as a function of sample geometry, laser power, and DC electric field for Au nanoparticles embedded in MgO. By understanding the laser-material interaction through experiments and a theoretical model of heat diffusion inside the sample after the interaction with laser pulse, we point out the physical origin of the noise and determine the conditions to reduce it by more than one order of magnitude, improving the sensitivity of the La-APT for metal-dielectric composites.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States). Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1339868
Report Number(s):
PNNL-SA-122789; 49075
Journal Information:
Journal of Applied Physics, Vol. 120, Issue 16; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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  • Bigot, L.; El Hamzaoui, H.; Le Rouge, A.
  • 12th European Quantum Electronics Conference CLEO EUROPE/EQEC, 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC) https://doi.org/10.1109/cleoe.2011.5942822
conference May 2011
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Cited By (3)

Elemental Distribution in CrNbTaTiW-C High Entropy Alloy Thin Films journal February 2019
Thermal diffusivity of diamond nanowires studied by laser assisted atom probe tomography journal April 2018
Atom Probe Tomography for Catalysis Applications: A Review journal July 2019