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Title: Structural evolution and mechanical behaviour of Pt nanoparticle superlattices at high pressure

Journal Article · · Nanoscale
DOI:https://doi.org/10.1039/c5nr08291a· OSTI ID:1332363
 [1];  [2];  [3];  [4];  [5];  [3];  [6];  [1];  [2]
  1. Univ. of Nevada, Las Vegas, NV (United States). Dept. of Physics and Astronomy
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Earth and Environmental Sciences Division
  3. State Univ. of New York (SUNY), Binghamton, NY (United States)
  4. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Coal Chemistry
  5. Univ. of New Mexico, Albuquerque, NM (United States). TEM Lab.
  6. Cornell Univ., Ithaca, NY (United States). Cornell High Energy Synchroton Source

High pressure is an effective means for tuning the interparticle distances of nanoparticle (NP) superlattice and thus for modifying their physical properties and functionalities. In this work, we determined the evolutio of inter-NP distances of a Pt NP superlattice with increasing pressure using an in situ synchrotro small-angle X-ray scattering (SAXS) technique in a diamond-anvil cell (DAC). Transmission electro microscopy (TEM) was used to characterize the microstructures of pre- and post-compression samples Our results demonstrate that the evolution of Pt NP assemblies with increasing pressure consists of fou stages: (1) ligand elastic response, (2) uniform compression, (3) ligand detachment from NP surfaces, an (4) deviatoric compression of ligands between neighboring NPs. Lastly, by controlling the magnitudes of applie pressure and deviatoric stress, one can sinter NPs into novel architectures such as nanowires an nanoceramics.

Research Organization:
Univ. of Nevada, Las Vegas, NV (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0001982
OSTI ID:
1332363
Journal Information:
Nanoscale, Vol. 8, Issue 9; ISSN 2040-3364
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

References (33)

Structural diversity in binary nanoparticle superlattices journal January 2006
Nanobiotechnology II: More Concepts and Applications book January 2007
Nanostructured Gold Architectures Formed through High Pressure-Driven Sintering of Spherical Nanoparticle Arrays journal September 2010
A general strategy for nanocrystal synthesis journal September 2005
The Nanocrystal Superlattice Pressure Cell: A Novel Approach To Study Molecular Bundles under Uniaxial Compression journal July 2014
Controlling Nanocrystal Superlattice Symmetry and Shape-Anisotropic Interactions through Variable Ligand Surface Coverage journal March 2011
Directed Self-Assembly of Nanoparticles journal June 2010
Stress-Induced Nanoparticle Crystallization journal May 2014
Comparing the Structural Stability of PbS Nanocrystals Assembled in fcc and bcc Superlattice Allotropes journal June 2012
Solvent-Mediated Self-Assembly of Nanocube Superlattices journal January 2014
Stress-induced phase transformation and optical coupling of silver nanoparticle superlattices into mechanically stable nanowires journal June 2014
Deviatoric Stress Driven Formation of Large Single-Crystal PbS Nanosheet from Nanoparticles and in Situ Monitoring of Oriented Attachment journal September 2011
Pressure-Driven Assembly of Spherical Nanoparticles and Formation of 1D-Nanostructure Arrays journal July 2010
Correlating Superlattice Polymorphs to Internanoparticle Distance, Packing Density, and Surface Lattice in Assemblies of PbS Nanoparticles journal February 2013
Energy landscape of self-assembled superlattices of PbSe nanocrystals journal June 2014
Tilted Face-Centered-Cubic Supercrystals of PbS Nanocubes journal July 2012
Integrating in situ high pressure small and wide angle synchrotron x-ray scattering for exploiting new physics of nanoparticle supercrystals journal September 2010
Deviatoric Stress-Driven Fusion of Nanoparticle Superlattices journal August 2014
Accurate and simple analytic representation of the electron-gas correlation energy journal June 1992
Pressure Processing of Nanocube Assemblies Toward Harvesting of a Metastable PbS Phase journal July 2015
Integrated Nanoparticle-Biomolecule Hybrid Systems: Synthesis, Properties, and Applications journal November 2004
An Obtuse Rhombohedral Superlattice Assembled by Pt Nanocubes journal August 2015
A General Strategy for Preparation of Pt 3d-Transition Metal (Co, Fe, Ni) Nanocubes journal December 2009
Two-dimensional detector software: From real detector to idealised image or two-theta scan journal January 1996
Theoretical Near-Field Optical Properties of Branched Plasmonic Nanoparticle Networks journal September 2006
Pressure-Driven Assembly of Spherical Nanoparticles and Formation of 1D-Nanostructure Arrays journal July 2010
Ab initio molecular-dynamics simulation of the liquid-metal–amorphous-semiconductor transition in germanium journal May 1994
Projector augmented-wave method journal December 1994
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Elastic moduli and strength of nanocrystalline cubic BC 2 N from x-ray diffraction under nonhydrostatic compression journal January 2009
Reducing Dzyaloshinskii-Moriya interaction and field-free spin-orbit torque switching in synthetic antiferromagnets journal May 2021
Electronic structure of AlFeN films exhibiting crystallographic orientation change from c- to a-axis with Fe concentrations and annealing effect journal February 2020
Integrated Nanoparticle?Biomolecule Hybrid Systems: Synthesis, Properties, and Applications journal February 2005

Cited By (7)

Ligand dynamics control structure, elasticity, and high-pressure behavior of nanoparticle superlattices journal January 2019
Nanocube Superlattices of Cesium Lead Bromide Perovskites and Pressure-Induced Phase Transformations at Atomic and Mesoscale Levels journal March 2017
Pressure-induced emission of cesium lead halide perovskite nanocrystals journal October 2018
Thickness-Dependent Structural Stability and Anisotropy of Black Phosphorus journal January 2019
Nanoparticle Superlattices: The Roles of Soft Ligands journal September 2017
Tunable photoluminescence and an enhanced photoelectric response of Mn 2+ -doped CsPbCl 3 perovskite nanocrystals via pressure-induced structure evolution journal January 2019
Pressure-induced emission of cesium lead halide perovskite nanocrystals. text January 2018