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

Abstract

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.

Authors:
 [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)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1067293
DOE Contract Number:  
AC05-00OR22725; AC52-07NA27344
Resource Type:
Journal Article
Journal Name:
Langmuir
Additional Journal Information:
Journal Volume: 28; Journal Issue: 49; Journal ID: ISSN 0743-7463
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

McKeown, Joseph T., Roberts, Nicholas A., Fowlkes, Jason D., Wu, Yueying, LaGrange, Thomas, Reed, Bryan W., Campbell, Geoffrey H., and Rack, Philip D. Real-Time Observation of Nanosecond Liquid-Phase Assembly of Nickel Nanoparticles via Pulsed-Laser Heating. United States: N. p., 2012. Web. doi:10.1021/la303657e.
McKeown, Joseph T., Roberts, Nicholas A., Fowlkes, Jason D., Wu, Yueying, LaGrange, Thomas, Reed, Bryan W., Campbell, Geoffrey H., & Rack, Philip D. Real-Time Observation of Nanosecond Liquid-Phase Assembly of Nickel Nanoparticles via Pulsed-Laser Heating. United States. doi:10.1021/la303657e.
McKeown, Joseph T., Roberts, Nicholas A., Fowlkes, Jason D., Wu, Yueying, LaGrange, Thomas, Reed, Bryan W., Campbell, Geoffrey H., and Rack, Philip D. Mon . "Real-Time Observation of Nanosecond Liquid-Phase Assembly of Nickel Nanoparticles via Pulsed-Laser Heating". United States. doi:10.1021/la303657e.
@article{osti_1067293,
title = {Real-Time Observation of Nanosecond Liquid-Phase Assembly of Nickel Nanoparticles via Pulsed-Laser Heating},
author = {McKeown, Joseph T. and Roberts, Nicholas A. and Fowlkes, Jason D. and Wu, Yueying and LaGrange, Thomas and Reed, Bryan W. and Campbell, Geoffrey H. and Rack, Philip D.},
abstractNote = {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.},
doi = {10.1021/la303657e},
journal = {Langmuir},
issn = {0743-7463},
number = 49,
volume = 28,
place = {United States},
year = {2012},
month = {11}
}