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Related Concept Videos

Three-Dimensional Analysis of Strain01:29

Three-Dimensional Analysis of Strain

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Three-dimensional strain analysis is crucial for understanding how materials deform under stress, particularly in elastic, homogeneous materials. This method employs principal stress axes to simplify complex stress states into more understandable forms. Subjected to stress, a small cubic element within a material either expands or contracts along these axes, transforming into a rectangular parallelepiped. This transformation effectively illustrates the material's deformation. The principal...
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Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity01:15

Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity

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Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
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Transformation of Plane Strain01:12

Transformation of Plane Strain

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When analyzing elongated structures like bars subjected to uniformly distributed loads, it is essential to understand the transformation of plane strain when coordinate axes are rotated. This transformation helps to assess how material deformation characteristics vary with orientation, which is crucial in materials science and structural engineering.
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Measurements of Strain01:27

Measurements of Strain

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Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
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Strain and Elastic Modulus

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The quantity that describes the deformation of a body under stress is known as strain. Strain is given as a fractional change in either length, volume, or geometry under tensile, volume (also known as bulk), or shear stress, respectively, and is a dimensionless quantity. The strain experienced by a body under tensile or compressive stress is called tensile or compressive strain, respectively. In contrast, the strain experienced under bulk stress and shear stress is known as volume and shear...
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Elastic Strain Energy for Normal Stresses01:22

Elastic Strain Energy for Normal Stresses

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Strain energy quantifies the energy stored within a material due to deformation under loading conditions, a fundamental concept in materials science and engineering. The strain energy can be modeled when a material is subjected to axial loading with uniformly distributed stress. In this scenario, the stress experienced by the material is the internal force divided by the cross-sectional area, and the strain induced is directly proportional to this stress through the modulus of elasticity.
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Related Experiment Video

Updated: Dec 11, 2025

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy
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Electronic and effective mass modulation in 2D BCN by strain engineering.

Lifei Liu1, Liangzhi Kou2, Yifeng Wang1,3

  • 1College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China.

Nanotechnology
|August 19, 2020
PubMed
Summary
This summary is machine-generated.

Strain engineering of 2D BCN materials offers precise control over electronic properties. Biaxial strain modulates band gaps and effective masses, paving the way for advanced electronic devices.

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Two-dimensional (2D) BCN materials, combining graphene and hexagonal boron nitride (h-BN), exhibit diverse electronic properties.
  • Precise control over these electronic properties is crucial for realizing practical applications.

Purpose of the Study:

  • To systematically investigate the electronic structure and effective mass of 2D BCN under biaxial strain.
  • To explore strain-induced modulation of band gaps in zigzag and armchair BCN configurations.

Main Methods:

  • Density functional theory (DFT) calculations were employed.
  • Systematic analysis of electronic band structure and effective mass under varying biaxial strain conditions.

Main Results:

  • Zigzag BCN band gaps decrease monotonically with increasing tensile strain, irrespective of the C/h-BN ratio.
  • Armchair BCN band gaps show a ratio-dependent response to strain: C2(BN)4 decreases significantly, while C3(BN)3 and C4(BN)2 exhibit initial stability followed by an increase.
  • Biaxial strain effectively modulates the electron and hole effective masses in BCN materials.

Conclusions:

  • Biaxial strain presents a viable method for tuning the electronic properties of 2D BCN.
  • These findings offer a pathway for designing and fabricating novel electronic devices based on 2D BCN materials.