Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Types of Damping01:20

Types of Damping

6.4K
If the amount of damping in a system is gradually increased, the period and frequency start to become affected because damping opposes, and hence slows, the back and forth motion (the net force is smaller in both directions). If there is a very large amount of damping, the system does not even oscillate; instead, it slowly moves toward equilibrium. In brief, an overdamped system moves slowly towards equilibrium, whereas an underdamped system moves quickly to equilibrium but will oscillate about...
6.4K
Surface Tension and Surface Energy01:16

Surface Tension and Surface Energy

1.4K
When a paint brush is immersed in water, the bristles wave freely inside the water. When it is taken out, the bristles stick together. The reason behind this effect is surface tension.
Consider a beaker filled with liquid. The bulk molecules in the liquid experience equal attractive forces on all sides with the surrounding molecules. However, the surface molecules experience a net attractive force downward due to the bulk molecules. The surface of the liquid behaves like a stretched membrane,...
1.4K
Wave Parameters01:10

Wave Parameters

7.7K
The simplest mechanical waves are associated with simple harmonic motion and repeat themselves for several cycles. These simple harmonic waves can be modeled using a combination of sine and cosine functions. Consider a simplified surface water wave that moves across the water's surface. Unlike complex ocean waves, in surface water waves, water moves vertically, oscillating up and down, whereas the disturbance of the wave moves horizontally through the medium. If a seagull is floating on the...
7.7K
Standing Waves01:17

Standing Waves

4.4K
Sometimes waves do not seem to move; rather, they just vibrate in place. Unmoving waves can be seen on the surface of a glass of milk kept in a refrigerator, which is one example of standing waves. Vibrations from the refrigerator motor create waves on the milk that oscillate up and down but do not seem to move across the surface. These waves are formed or created by the superposition of two or more identical moving waves in opposite directions. The waves move through each other, with their...
4.4K
Surface Tension of Fluid01:22

Surface Tension of Fluid

279
Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
Surface tension varies...
279
Elastic Strain Energy for Shearing Stresses01:20

Elastic Strain Energy for Shearing Stresses

185
As discussed in previous lessons, strain energy in a material is the energy stored when it is elastically deformed, a concept crucial in materials science and mechanical engineering. This energy results from the internal work done against the cohesive forces within the material. When a material undergoes shearing stress and corresponding shearing strain, the strain energy density, which is the energy stored per unit volume, is calculated. Within the elastic limit, where the stress is...
185

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Informational blueprints reveal condition-dependent gene regulatory architectures.

bioRxiv : the preprint server for biology·2026
Same author

Measurement-induced phase transitions in informational active matter.

PNAS nexus·2026
Same author

The fourfold way to rupture in active solids.

Nature materials·2026
Same author

Learning functional groups in complex microbiomes.

bioRxiv : the preprint server for biology·2026
Same author

Learning functional groups in complex microbiomes.

ArXiv·2026
Same author

Nonreciprocally coupled spin glasses: Exceptional-point-mediated phase transitions and aging.

Physical review. E·2025

Related Experiment Video

Updated: Jun 30, 2025

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment
04:51

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment

Published on: March 1, 2024

980

Odd elasticity and topological waves in active surfaces.

Michele Fossati1,2, Colin Scheibner3,4, Michel Fruchart3,4

  • 1SISSA, Trieste 34136, Italy.

Physical Review. E
|March 16, 2024
PubMed
Summary
This summary is machine-generated.

Odd elasticity introduces antisymmetric components in the elastic tensor, enabling unique wave dynamics in active surfaces. This study reveals how odd moduli create chiral edge waves, a key finding for topological materials.

More Related Videos

Controlling Flow Speeds of Microtubule-Based 3D Active Fluids Using Temperature
08:04

Controlling Flow Speeds of Microtubule-Based 3D Active Fluids Using Temperature

Published on: November 26, 2019

7.2K
Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces
08:05

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces

Published on: September 9, 2022

2.4K

Related Experiment Videos

Last Updated: Jun 30, 2025

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment
04:51

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment

Published on: March 1, 2024

980
Controlling Flow Speeds of Microtubule-Based 3D Active Fluids Using Temperature
08:04

Controlling Flow Speeds of Microtubule-Based 3D Active Fluids Using Temperature

Published on: November 26, 2019

7.2K
Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces
08:05

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces

Published on: September 9, 2022

2.4K

Area of Science:

  • Physics
  • Materials Science
  • Solid Mechanics

Background:

  • Odd elasticity deviates from traditional elasticity by lacking a potential energy function, introducing antisymmetric components into the elastic tensor.
  • This framework is crucial for understanding active elastic systems and their unique mechanical behaviors.
  • Non-Hermitian wave dynamics explore systems with energy dissipation or gain, relevant to active materials.

Purpose of the Study:

  • To investigate the phenomenon of odd elasticity and its impact on non-Hermitian wave dynamics in active surfaces, specifically moderately thick plates.
  • To explore the emergence of topological invariants, such as the first Chern number, in the vibrational modes of these plates.
  • To elucidate the underlying mechanism responsible for chiral edge waves in odd elastic systems.

Main Methods:

  • Utilizing continuum elastic theory to model the behavior of active surfaces with odd elasticity.
  • Analyzing the vibrational modes of moderately thick plates to identify topological properties.
  • Investigating the relationship between odd moduli, the Chern number, and the presence of boundary waves.

Main Results:

  • Demonstrated that odd moduli can lead to a nonzero first Chern number in the vibrational modes of plates.
  • Established a direct link between the Chern number and the existence of unidirectional shearing waves at the plate boundaries.
  • Identified a two-step mechanism where finite thickness gaps shear modes and odd elasticity induces chirality.

Conclusions:

  • Odd elasticity provides a novel route to engineer topological properties in mechanical systems.
  • The findings reveal the existence of chiral edge waves, analogous to edge states in topological insulators, but arising from different physical principles.
  • This work opens new avenues for designing active materials with tailored wave propagation characteristics and topological protection.