Solid–Solid Phase Transformations Induced through Cation Exchange and Strain in 2D Heterostructured Copper Sulfide Nanocrystals

We demonstrate dual interface formation in nanocrystals (NCs) through cation exchange, creating epitaxial heterostructures within spherical NCs. The thickness of the inner-disk layer can be tuned to form two-dimensional (2D), single atomic layers (

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Bibliographic Details
Published in:Nano letters 2014-12, Vol.14 (12), p.7090-7099
Main Authors: Ha, Don-Hyung, Caldwell, Andrew H, Ward, Matthew J, Honrao, Shreyas, Mathew, Kiran, Hovden, Robert, Koker, Margaret K. A, Muller, David A, Hennig, Richard G, Robinson, Richard D
Format: Article
Language:English
Subjects:
Cation exchanging
Cations
Condensed matter: structure, mechanical and thermal properties
Copper - chemistry
Copper sulfides
Cross-disciplinary physics: materials science
rheology
Elastic Modulus
Equations of state, phase equilibria, and phase transitions
Exact sciences and technology
Exchange
Materials science
Materials Testing
Mechanical and acoustical properties of condensed matter
Mechanical properties of nanoscale materials
Metal Nanoparticles - chemistry
Metal Nanoparticles - ultrastructure
Methods of nanofabrication
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Nanospheres - chemistry
Nanospheres - ultrastructure
Nanostructure
Particle Size
Phase transformations
Phase Transition
Physics
Specific phase transitions
Strain
Stress, Mechanical
Structural transitions in nanoscale materials
Sulfides - chemistry
Tensile Strength
Two dimensional
Zinc Compounds - chemistry
Zinc sulfides
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Description
Summary:We demonstrate dual interface formation in nanocrystals (NCs) through cation exchange, creating epitaxial heterostructures within spherical NCs. The thickness of the inner-disk layer can be tuned to form two-dimensional (2D), single atomic layers (
ISSN:1530-6984
1530-6992
DOI:10.1021/nl5035607