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Open AccessJournal ArticleDOI

Unique Omnidirectional Negative Poisson’s Ratio in δ-Phase Carbon Monochalcogenides

TLDR
In this article, a two-dimensional δ-phase carbon monochalcoated carbon dioxide (CMCO) was proposed for nanomechanical applications using first-principles calculations.
Abstract
Auxetic materials (negative Poisson’s ratio) are of exceptional importance for nanomechanical applications. Using first-principles calculations, we propose two-dimensional δ-phase carbon monochalco...

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Optoelectronic and magnetic properties of transition metals-adsorbed GeC monolayer

TL;DR: In this paper , the optoelectronic and magnetic behaviors of GeC monolayer after transition metals (TMs) adsorption have been systematically discussed using density functional theory.
Journal ArticleDOI

Concurrence of auxetic effect and topological phase transition in a 2D phosphorous nitride

TL;DR: In this paper , a two-dimensional phosphorous nitride monolayer has been shown to undergo a topological phase transition under tensile strain, where the phase transition from the semi-Dirac material to Dirac material is observed at nearly the same critical tensile force as that in auxetic phase transition.
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Structural, Electronic, and Optical Properties of Hexagonal XC6 (X=N, P, As, and Sb) Monolayers.

TL;DR: Based on first-principles calculations, one novel family of 2D IV-V compounds, XC6 (X = N, P, As and Sb), has been proposed, and these compounds exhibit excellent stability, as determined from the cohesive energies, phonon dispersion analysis, ab initio molecular dynamics (AIMD) simulations and mechanical properties.
References
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Journal ArticleDOI

From ultrasoft pseudopotentials to the projector augmented-wave method

TL;DR: In this paper, the formal relationship between US Vanderbilt-type pseudopotentials and Blochl's projector augmented wave (PAW) method is derived and the Hamilton operator, the forces, and the stress tensor are derived for this modified PAW functional.
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.
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Solvent engineering for high-performance inorganic–organic hybrid perovskite solar cells

TL;DR: A bilayer architecture comprising the key features of mesoscopic and planar structures obtained by a fully solution-based process is reported, providing important progress towards the understanding of the role of solution-processing in the realization of low-cost and highly efficient perovskite solar cells.
Journal ArticleDOI

Nosé-Hoover chains : the canonical ensemble via continuous dynamics

TL;DR: In this paper, a modification of the Nose-Hoover dynamics is proposed which includes not a single thermostat variable but a chain of variables, Nose chains, which gives the canonical distribution where the simple formalism fails.
Journal ArticleDOI

Foam structures with a negative poisson's ratio

TL;DR: A novel foam structure is presented, which exhibits a negative Poisson's ratio, and such a material expands laterally when stretched, in contrast to ordinary materials.
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