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Real-Time Observation of Nanosecond Liquid-Phase Assembly of Nickel Nanoparticles via Pulsed-Laser Heating

Journal Article · · Langmuir
DOI:https://doi.org/10.1021/la303657e· OSTI ID:1067293
 [1];  [2];  [3];  [2];  [1];  [1];  [1];  [4]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Condensed Matter and Materials Division
  2. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
  4. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
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Using pump–probe electron microscopy techniques, the dewetting of thin nickel films exposed to a pulsed nanosecond laser was monitored at tens of nanometers spatial and nanosecond time scales to provide insight into the liquid-phase assembly dynamics. Thickness-dependent and correlated time and length scales indicate that a spinodal instability drives the assembly process. Measured lifetimes of the liquid metal are consistent with finite-difference simulations of the laser-irradiated film and are consistent with estimated and observed spinodal time scales. Lastly, these results can be used to design improved synthesis and assembly routes toward achieving advanced functional nanomaterials and devices.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
DOE Contract Number:
AC05-00OR22725; AC52-07NA27344
OSTI ID:
1067293
Journal Information:
Langmuir, Journal Name: Langmuir Journal Issue: 49 Vol. 28; ISSN 0743-7463
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY