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

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...

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Two-dimensional materials with intrinsic auxeticity: progress and perspectives

Nanoscale ◽

10.1039/c9nr03546j ◽

2019 ◽

Vol 11 (24) ◽

pp. 11413-11428 ◽

Cited By ~ 14

Author(s):

Rui Peng ◽

Yandong Ma ◽

Qian Wu ◽

Baibiao Huang ◽

Ying Dai

Keyword(s):

Poisson’S Ratio ◽

Poisson's Ratio ◽

Negative Poisson’S Ratio ◽

Two Dimensional ◽

Auxetic Materials ◽

Two Dimensional Materials ◽

Negative Poisson's Ratio

2D auxetic materials with an intrinsic negative Poisson's ratio hold great potential in nanodevices.

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Designing a new three-dimensional periodic cellular auxetic material

International Journal of Modern Physics B ◽

10.1142/s021797921744088x ◽

2017 ◽

Vol 31 (16-19) ◽

pp. 1744088

Author(s):

Yiyi Zhou ◽

Lianmen Chen

Keyword(s):

Poisson’S Ratio ◽

Three Dimensional ◽

Parametric Model ◽

Early Research ◽

Poisson's Ratio ◽

Negative Poisson’S Ratio ◽

Two Dimensional ◽

Auxetic Materials ◽

Negative Poisson's Ratio ◽

Fundamental Mechanism

Auxetics are materials showing a negative Poisson’s ratio. Early research found several categories of auxetic materials in the chemical field. Later research identified the fundamental mechanism generating this behavior is rotation; a variety of two-dimensional auxetic material have been generated accordingly. Nevertheless, the successful example of three-dimensional auxetic material is still rare. This paper introduces a new design of three-dimensional periodic cellular auxetic material based on geometrical and mechanical methodology. The projections of the optimized periodic modules in two horizontal directions are geometrically same with auxetic hexahedral poem, so that the optimized periodic material can perform auxetic in both two horizontal directions under vertical compression. Parametric model is simulated to prove the design.

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

Physical Review Materials ◽

10.1103/physrevmaterials.2.104003 ◽

2018 ◽

Vol 2 (10) ◽

Cited By ~ 12

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

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

Journal of Nanomaterials ◽

10.1155/2019/8618159 ◽

2019 ◽

Vol 2019 ◽

pp. 1-10 ◽

Cited By ~ 1

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.

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

Physical Chemistry Chemical Physics ◽

10.1039/c8cp01353e ◽

2018 ◽

Vol 20 (28) ◽

pp. 18924-18930 ◽

Cited By ~ 20

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.

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Auxetic Materials Materials with Negative Poisson’s Ratio

Material Science & Engineering International Journal ◽

10.15406/mseij.2017.01.00011 ◽

2017 ◽

Vol 1 (2) ◽

Author(s):

Mehrdad Ashjari

Keyword(s):

Poisson’S Ratio ◽

Poisson's Ratio ◽

Negative Poisson’S Ratio ◽

Auxetic Materials ◽

Negative Poisson's Ratio

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

Journal of Materials Chemistry C ◽

10.1039/d0tc04846a ◽

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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Design and fabrication of auxetic warp-knitted structures with a rotational hexagonal loop

Textile Research Journal ◽

10.1177/0040517515621132 ◽

2016 ◽

Vol 86 (20) ◽

pp. 2151-2157 ◽

Cited By ~ 19

Author(s):

Pibo Ma ◽

Yuping Chang ◽

Gaoming Jiang

Keyword(s):

Poisson’S Ratio ◽

Rotation Angle ◽

Hexagonal Structure ◽

Poisson's Ratio ◽

Negative Poisson’S Ratio ◽

Two Dimensional ◽

Auxetic Structures ◽

Negative Poisson's Ratio ◽

Novel Structures

In this paper, the design, manufacturing and characterization of two-dimensional warp-knitted textiles with auxetic performance is reported. Four warp-knitted structures based on a rotational hexagonal structure are produced, and these structures can lead to a negative Poisson’s ratio mathematically. The testing results have confirmed that the knitting structure of the front bar, as well as let-off values of the front bar’s chain parts, has a great effect, and auxetic properties of the warp-knitted textiles have a complicated relationship with the rotation angle. These novel structures can expand the applied area of auxetic structures.

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