scholarly journals Design and Prediction of a Novel Two-Dimensional Carbon Nanostructure with In-Plane Negative Poisson’s Ratio

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Kun Yuan ◽  
Meng-Yang Li ◽  
Yan-Zhi Liu ◽  
Ren-Zhong Li
Keyword(s):  
Mechanical Properties ◽  
Poisson’S Ratio ◽  
Density Functional ◽  
Mechanical Stability ◽  
Poisson's Ratio ◽  
Negative Poisson’S Ratio ◽  
Two Dimensional ◽  
Carbon Nanostructure ◽  
Ratio Effect ◽  
Negative Poisson's Ratio

The intrinsic negative Poisson’s ratio effect in 2-dimensional nanomaterials have attracted a lot of research interests due to its superior mechanical properties, and new mechanisms have emerged in the nanoscale. In this paper, we designed a novel graphyne-like two-dimensional carbon nanostructure with a “butterfly” shape (GL-2D-1) and its configuration isomer with a “herring-bone” form (GL-2D-2) by means of density functional theoretical calculation and predicted their in-plane negative Poisson’s ratio effect and other mechanical properties. Both GL-2D-1 and GL-2D-2 present a significant negative Poisson’s ratio effect under different specific strains conditions. By contrast, GL-2D-2 presents a much stronger negative Poisson’s ratio effect and mechanical stability than does GL-2D-1. It is hoped that this work could be a useful structural design strategy for the development of the 2D carbon nanostructure with the intrinsic negative Poisson’s ratio.

Global minimum of two-dimensional FeB6and an oxidization induced negative Poisson's ratio: a new stable allotrope

2016 ◽  
Vol 4 (40) ◽  
pp. 9613-9621 ◽  
Author(s):  
Jiao Li ◽  
Yanpei Wei ◽  
Xinyu Fan ◽  
Hongbo Wang ◽  
Yang Song ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electronic Properties ◽  
Poisson’S Ratio ◽  
Global Minimum ◽  
Poisson's Ratio ◽  
Negative Poisson’S Ratio ◽  
Two Dimensional ◽  
Negative Poisson's Ratio

A tri-FeB6sheet with a sandwich-like structure has been found to be a novel stable two-dimensional allotrope which has remarkable mechanical properties and tunable electronic properties.

scholarly journals Giant negative Poisson’s ratio in two-dimensional V-shaped materials

2021 ◽  
Author(s):  
Xikui Ma ◽  
Jian Liu ◽  
Yingcai Fan ◽  
Weifeng Li ◽  
Jifan Hu ◽  
...  
Keyword(s):  
Poisson’S Ratio ◽  
Poisson's Ratio ◽  
Negative Poisson’S Ratio ◽  
Two Dimensional ◽  
Auxetic Materials ◽  
Negative Poisson's Ratio ◽  
Poisson's Ratios ◽  
Poisson’S Ratios

Two-dimensional (2D) auxetic materials with exceptional negative Poisson’s ratios (NPR) are drawing increasing interest due to the potentials in medicine, fasteners, tougher composites and many other applications. Improving the auxetic...

scholarly journals Monolayer Mg2C : Negative Poisson's ratio and unconventional two-dimensional emergent fermions

2018 ◽  
Vol 2 (10) ◽  
Author(s):  
Shan-Shan Wang ◽  
Ying Liu ◽  
Zhi-Ming Yu ◽  
Xian-Lei Sheng ◽  
Liyan Zhu ◽  
...  
Keyword(s):  
Poisson’S Ratio ◽  
Poisson's Ratio ◽  
Negative Poisson’S Ratio ◽  
Two Dimensional ◽  
Negative Poisson's Ratio

Deformation behavior of auxetic woven fabric made of foldable geometry in different tensile directions

2020 ◽  
Vol 91 (1-2) ◽  
pp. 87-99
Author(s):  
Hasan Kamrul ◽  
Weiguo Dong ◽  
Adeel Zulifqar ◽  
Shuaiquan Zhao ◽  
Minglonghai Zhang ◽  
...  
Keyword(s):  
Poisson’S Ratio ◽  
Tensile Deformation ◽  
Tensile Loading ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Poisson's Ratio ◽  
Negative Poisson’S Ratio ◽  
Ratio Effect ◽  
Negative Poisson's Ratio ◽  
Principal Directions

Auxetic woven fabrics made with special geometrical structures have gained the interest of textile scientists in recent years. This paper reports a study on auxetic woven fabric based on a double-directional parallel in-phase zig-zag foldable geometrical structure. Such a fabric has been already produced and investigated for its negative Poisson's ratio effect in two principal directions (weft and warp directions). However, its negative Poisson's ratio effect in biased tensile directions as well as under repeated tensile loading conditions has not been studied yet. Therefore, in this paper, these two limitations are addressed. The auxetic woven fabric was firstly fabricated, and then subjected not only to tensile tests in different tensile directions, including two principle directions and three biased directions, but also to repeated tensile loading. It was found that both the negative Poisson's ratio effect and the resistance to tensile deformation are dependent upon the tensile direction, and the highest negative Poisson's ratio effect and higher resistance to tensile deformation are obtained in two principal directions.

Highly negative Poisson's ratio in a flexible two-dimensional tungsten carbide monolayer

2018 ◽  
Vol 20 (28) ◽  
pp. 18924-18930 ◽  
Author(s):  
Donghai Wu ◽  
Shuaiwei Wang ◽  
Shouren Zhang ◽  
Jinyun Yuan ◽  
Baocheng Yang ◽  
...  
Keyword(s):  
Tungsten Carbide ◽  
Poisson’S Ratio ◽  
Poisson's Ratio ◽  
Negative Poisson’S Ratio ◽  
Two Dimensional ◽  
Negative Poisson's Ratio

A highly negative Poisson's ratio in a flexible 2D W2C sheet was found and its mechanism was proposed.

scholarly journals Strain driven negative Poisson's ratio and extraordinary light-harvesting response of Penta-BCN monolayer

2021 ◽  
Author(s):  
Shambhu Bhandari Sharma ◽  
Ramchandra Bhatta ◽  
Rajendra Adhikari ◽  
Durga Paudyal
Keyword(s):  
Poisson’S Ratio ◽  
Density Functional ◽  
Compressive Strain ◽  
Optical Response ◽  
Mechanical Anisotropy ◽  
Poisson's Ratio ◽  
Visible Range ◽  
Negative Poisson’S Ratio ◽  
Structural Dynamic ◽  
Negative Poisson's Ratio

We report here, structural, dynamic, and mechanical stability in pentagonal boron carbon nitride (p-BCN) monolayer, a new member of direct bandgap two-dimensional (2D) semiconductor. The identified visible range bandgap with excellent mechanical strength allows it to be a promising candidate material in optoelectronics and nanomechanics. By employing density functional theory (DFT), we reveal a unique geometrical reconstruction with rigidity in B$ - $N and C$ - $N bond lengths with applied strain. These quasi-sp$ ^3$ hybridized short and strong covalent bonding and unique geometry support the monolayer to possess extraordinary mechanical response. Remarkably, the very rare, negative Poisson's ratio (NPR), with softening and hardening, mechanical anisotropy to isotropy is achieved with the application of a small value of strain. Similarly, the desired bandgap is manipulated by loading the biaxial strain. Most importantly, our predictions on p-BCN show excellent optical response such as good static dielectric constant and refractive index, strong optical absorption (up to 1.08$\times$10$ ^5 $ $ {cm}^{-1}$ in VR and 7.01$\times$10$ ^5 $ $ {cm}^{-1}$ in UV) with small energy loss and reflectance both appearing in visible and ultraviolet regions (UV). The desired optical response along with the blue and red shift is demonstrated by tailoring with tensile and compressive strain. Additionally, the predicted strong optical anisotropy provides it's application in polarized photodetection.

Two-dimensional vanadium tetrafluoride with antiferromagnetic ferroelasticity and bidirectional negative Poisson's ratio

2021 ◽  
Vol 9 (1) ◽  
pp. 95-100
Author(s):  
Lei Zhang ◽  
Cheng Tang ◽  
Aijun Du
Keyword(s):  
Poisson’S Ratio ◽  
Poisson's Ratio ◽  
Negative Poisson’S Ratio ◽  
Two Dimensional ◽  
2D Material ◽  
Negative Poisson's Ratio

A new 2D material (VF4) integrated with AFM–FA coupling and sizable bidirectional auxeticity is highlighted which could be accessible from its layered bulk counterpart.

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