High-pressure experiments have successfully produced a variety of gold nanostructures by compressing polymer coated spherical nanoparticles. We apply atomistic simulation to understand the role of the soft polymer response in determining the pressure-driven assembly of gold nanostructures. Quasi-isentropic experiments have shown that 1D, 2D and 3D nanostructures can be formed and recovered from dynamic compression of fcc superlattices of alkanethiol-coated gold nanocrystals on Sandia’s Veloce pulsed power accelerator. Molecular modeling has shown that the dimensionality of the final structures depends on the orientation of the superlattice and the uniaxial loading. We describe the role of coating ligand binding strength, on ligand migration and deformation processes during pressure-driven coalescence of the cores into permanent nanowires, nanosheets and 3D structures.
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3 July 2018
SHOCK COMPRESSION OF CONDENSED MATTER - 2017: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
9–14 July 2017
St. Louis, MO, USA
Research Article|
July 03 2018
Modeling pressure-driven assembly of polymer coated nanoparticles
J. Matthew D. Lane;
J. Matthew D. Lane
a)
1
Sandia National Laboratories
, Albuquerque, NM 87185, USA
a)Corresponding author: [email protected]
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K. Michael Salerno;
K. Michael Salerno
2
U.S. Naval Research Laboratory
, Washington, D.C. 20375, USA
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Ishan Srivastava;
Ishan Srivastava
1
Sandia National Laboratories
, Albuquerque, NM 87185, USA
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Gary S. Grest;
Gary S. Grest
1
Sandia National Laboratories
, Albuquerque, NM 87185, USA
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Hongyou Fan
Hongyou Fan
1
Sandia National Laboratories
, Albuquerque, NM 87185, USA
3
Department of Chemical and Biological Engineering, University of New Mexico
, Albuquerque, NM 87106, USA
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a)Corresponding author: [email protected]
AIP Conf. Proc. 1979, 090007 (2018)
Citation
J. Matthew D. Lane, K. Michael Salerno, Ishan Srivastava, Gary S. Grest, Hongyou Fan; Modeling pressure-driven assembly of polymer coated nanoparticles. AIP Conf. Proc. 3 July 2018; 1979 (1): 090007. https://doi.org/10.1063/1.5044864
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