Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Transformation of Plane Strain01:12

Transformation of Plane Strain

193
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.
Under plane strain conditions, typical for members where one dimension significantly exceeds the others, deformations and resultant strains are...
193
Three-Dimensional Analysis of Strain01:29

Three-Dimensional Analysis of Strain

250
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...
250
Angle of Twist - Elastic Range01:13

Angle of Twist - Elastic Range

357
Consider a cylindrical shaft with a length denoted by L and a consistent cross-sectional radius referred to as r. This shaft undergoes a torque at the free end. The highest shearing strain within the shaft is directly proportional to the twist angle and the radial distance from the shaft axis. When the shaft behaves elastically, this shearing strain can be articulated using variables such as the applied torque, radial distance, the polar moment of inertia, and the modulus of rigidity. By...
357
Bending of Curved Members - Strain Analysis01:14

Bending of Curved Members - Strain Analysis

158
The mechanics of deformation in curved members, such as beams or arches, under bending moments, involve complex responses. When such a member, symmetric about the y-axis and shaped like a segment of a circle centered at point C, is subjected to equal and opposite forces, its curvature and surface lengths change significantly. This alteration results in the shift of the curvature's center from C to C', indicating a tighter curve.
The important part of bending analysis for such a member...
158
Angle of Twist: Problem Solving01:13

Angle of Twist: Problem Solving

349
An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the...
349
Deformations in a Transverse Cross Section01:21

Deformations in a Transverse Cross Section

278
When a material is subjected to uniaxial stress, it elongates or contracts in the direction of the applied force, and also undergoes changes in the perpendicular directions. This behavior is crucial for understanding how materials behave under stress and is governed by mechanical properties such as Poisson's ratio v, which measures the ratio of transverse strain to axial strain.
As the material stretches, it expands or contracts in orthogonal directions to the load. This phenomenon varies...
278

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

High Pressure Synthesis of Ultrasmall Nanodiamonds with Nitrogen Vacancy Centers.

Nano letters·2026
Same author

Deterministic, dynamically reconfigurable single quantum emitters enabled by tip-enhanced nano-optical trapping spectroscopy.

Nature communications·2026
Same author

Author Correction: Hidden states and dynamics of fractional fillings in twisted MoTe<sub>2</sub> bilayers.

Nature·2026
Same author

Imaging the flat bands of magic-angle graphene reshaped by interactions.

Nature·2026
Same author

Upconversion Nanoparticles: Toward Programmable Nanoscale Photonic Systems.

Accounts of chemical research·2026
Same author

Correction to "Macroscopic Transition Metal Dichalcogenide Monolayers from Gold-Tape Exfoliation Retain Intrinsic Properties".

Nano letters·2026
Same journal

A native sulfur deposit in Gale crater, Mars.

Science (New York, N.Y.)·2026
Same journal

Coordinated demise of harmful algal blooms.

Science (New York, N.Y.)·2026
Same journal

Genetic effects put into context.

Science (New York, N.Y.)·2026
Same journal

Bacteria share proteins to survive antibiotics.

Science (New York, N.Y.)·2026
Same journal

Impacts shaped Earth's first continents.

Science (New York, N.Y.)·2026
Same journal

Erratum for the Report "Covalently bonded single-molecule junctions with stable and reversible photoswitched conductivity" by C. Jia <i>et al</i>.

Science (New York, N.Y.)·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Jul 19, 2025

Micro/Nano-scale Strain Distribution Measurement from Sampling Moir&#233; Fringes
06:56

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Published on: May 23, 2017

12.3K

Programación de perfiles de torsión y deformación en materiales 2D

Maëlle Kapfer1, Bjarke S Jessen1, Megan E Eisele1

  • 1Department of Physics, Columbia University, New York, NY, USA.

Science (New York, N.Y.)
|August 10, 2023
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores controlaron con precisión las superrejillas de moiré en materiales 2D doblando cintas. Este método reduce la tensión y el desorden, permitiendo patrones de moiré sintonizables para aplicaciones cuánticas.

Más Videos Relacionados

Artificial Thermal Ageing of Polyester Reinforced and Polyvinyl Chloride Coated Technical Fabric
07:48

Artificial Thermal Ageing of Polyester Reinforced and Polyvinyl Chloride Coated Technical Fabric

Published on: January 29, 2020

6.6K
3D Printing and In Situ Surface Modification via Type I Photoinitiated Reversible Addition-Fragmentation Chain Transfer Polymerization
07:28

3D Printing and In Situ Surface Modification via Type I Photoinitiated Reversible Addition-Fragmentation Chain Transfer Polymerization

Published on: February 18, 2022

3.8K

Videos de Experimentos Relacionados

Last Updated: Jul 19, 2025

Micro/Nano-scale Strain Distribution Measurement from Sampling Moir&#233; Fringes
06:56

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Published on: May 23, 2017

12.3K
Artificial Thermal Ageing of Polyester Reinforced and Polyvinyl Chloride Coated Technical Fabric
07:48

Artificial Thermal Ageing of Polyester Reinforced and Polyvinyl Chloride Coated Technical Fabric

Published on: January 29, 2020

6.6K
3D Printing and In Situ Surface Modification via Type I Photoinitiated Reversible Addition-Fragmentation Chain Transfer Polymerization
07:28

3D Printing and In Situ Surface Modification via Type I Photoinitiated Reversible Addition-Fragmentation Chain Transfer Polymerization

Published on: February 18, 2022

3.8K

Área de la Ciencia:

  • Ciencias de los materiales
  • Física de la materia condensada
  • Nanotecnología

Sus antecedentes:

  • Las superrejillas Moiré en materiales 2D retorcidos ofrecen propiedades cuánticas ajustables.
  • Los métodos de montaje actuales carecen de un control preciso sobre el ángulo de torsión e introducen deformación, lo que limita la calidad del patrón de moiré.

Objetivo del estudio:

  • Desarrollar una nueva técnica para la manipulación precisa de patrones de moiré en materiales 2D.
  • Mejorar la homogeneidad del ángulo de giro y reducir la tensión en las superredes de moiré.

Principales métodos:

  • Doblado en el plano de las cintas monocapa utilizando una punta de microscopio de fuerza atómica.
  • Manipulación controlada del registro atómico entre capas para formar patrones de moiré.

Principales resultados:

  • Se logra una variación continua de los ángulos de torsión con una alta homogeneidad.
  • Se redujo significativamente la tensión aleatoria, lo que lleva a patrones de moiré de trastorno ultrabajo.
  • Se ha demostrado la longitud de onda del patrón de moiré ajustable.

Conclusiones:

  • La flexión en plano ofrece un control superior sobre las superretas de moiré en comparación con los métodos existentes.
  • La técnica facilita los estudios detallados de los sistemas de moiré de desorden ultrabajo.
  • Permite el desarrollo de dispositivos de ingeniería de tensión con precisión.