Elastic strain engineering for unprecedented materials properties
Ju Li,Zhi-Wei Shan,Evan Ma +2 more
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TLDR
In this article, the elastic strain field is controlled statically or dynamically by varying the six-dimensional elastic strain as continuous variables, which gives new meaning to Richard Feynman's 1959 statement, "There is plenty of room at the bottom".Abstract:
“Smaller is stronger.” Nanostructured materials such as thin films, nanowires, nanoparticles, bulk nanocomposites, and atomic sheets can withstand non-hydrostatic (e.g., tensile or shear) stresses up to a significant fraction of their ideal strength without inelastic relaxation by plasticity or fracture. Large elastic strains, up to ∼10%, can be generated by epitaxy or by external loading on small-volume or bulk-scale nanomaterials and can be spatially homogeneous or inhomogeneous. This leads to new possibilities for tuning the physical and chemical properties of a material, such as electronic, optical, magnetic, phononic, and catalytic properties, by varying the six-dimensional elastic strain as continuous variables. By controlling the elastic strain field statically or dynamically, a much larger parameter space opens up for optimizing the functional properties of materials, which gives new meaning to Richard Feynman’s 1959 statement, “there’s plenty of room at the bottom.”read more
Citations
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Journal ArticleDOI
Band Gap Engineering with Ultralarge Biaxial Strains in Suspended Monolayer MoS2.
David Lloyd,Xinghui Liu,Jason Christopher,Lauren Cantley,Anubhav Wadehra,Brian L. Kim,Bennett B. Goldberg,Anna K. Swan,J. Scott Bunch +8 more
TL;DR: The continuous and reversible tuning of the optical band gap of suspended monolayer MoS2 membranes is demonstrated by as much as 500 meV by applying very large biaxial strains and evidence for the strain tuning of higher level optical transitions is reported.
Journal ArticleDOI
Strain Engineering of 2D Materials: Issues and Opportunities at the Interface
Zhaohe Dai,Luqi Liu,Zhong Zhang +2 more
TL;DR: These advances highlight how the strain or strain-coupled applications of 2D materials rely on the interfacial properties, essentially shear and adhesion, and finally offer direct guidelines for deterministic design of mechanical strains into 2D material for ultrathin semiconductor applications.
Journal ArticleDOI
Enhancing Electrocatalytic Water Splitting by Strain Engineering
TL;DR: Strain engineering offers a novel route to promote the electrocatalytic HER/OER performances for efficient water splitting and a vision for a future sustainable hydrogen fuel community based on strain-promoted water electrolysis is proposed.
References
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Journal ArticleDOI
Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene
TL;DR: Graphene is established as the strongest material ever measured, and atomically perfect nanoscale materials can be mechanically tested to deformations well beyond the linear regime.
Journal ArticleDOI
Van der Waals heterostructures
TL;DR: With steady improvement in fabrication techniques and using graphene’s springboard, van der Waals heterostructures should develop into a large field of their own.
Journal ArticleDOI
Sample dimensions influence strength and crystal plasticity.
TL;DR: Measurements of plastic yielding for single crystals of micrometer-sized dimensions for three different types of metals find that within the tests, the overall sample dimensions artificially limit the length scales available for plastic processes.
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