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

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

1.6K
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
1.6K
Magnetic Damping01:17

Magnetic Damping

1.3K
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
1.3K
Echo01:06

Echo

1.1K
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
1.1K
Interference and Superposition of Waves01:07

Interference and Superposition of Waves

7.5K
When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
7.5K
Sound Waves: Interference00:53

Sound Waves: Interference

5.1K
Sound waves can be modeled either as longitudinal waves, wherein the molecules of the medium oscillate around an equilibrium position, or as pressure waves. When two identical waves from the same source superimpose on each other, the combination of two crests or two troughs results in amplitude reinforcement known as constructive interference. If two identical waves, that are initially in phase, become out of phase because of different path lengths, the combination of crests with troughs...
5.1K
Interference and Diffraction02:18

Interference and Diffraction

54.4K
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
54.4K

You might also read

Related Articles

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

Sort by
Same author

Association Between Volleyball Participation and Knee Osteoarthritis in Community-Dwelling Adults: A Cross-Sectional Analysis of the Osteoarthritis Initiative.

Healthcare (Basel, Switzerland)·2026
Same author

Change in diversity patterns of fish by cascade dams: comprehensive dataset of eDNA and traditional evidence from the Jinsha River.

Journal of environmental management·2026
Same author

ICF Syndrome in Chinese Children: Four Case Reports with Novel Mutations.

Genetic testing and molecular biomarkers·2026
Same author

Synergistic Heavy-Atom and Vibronic-Coupling Effects for High-Performance Ionic TADF Emitters: A Theoretical Study.

Journal of computational chemistry·2026
Same author

Associations of co-exposure to organophosphate flame retardants and pesticides with maternal thyroid function in early pregnancy: Findings from the Shanghai Birth Cohort.

Ecotoxicology and environmental safety·2026
Same author

The mechanistic of DCBLD2 in inhibiting TGF-β induced endothelial-mesenchymal transition in calcific aortic valve disease.

Journal of molecular and cellular cardiology·2026

Related Experiment Video

Updated: Mar 31, 2026

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging
04:54

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging

Published on: June 16, 2023

4.0K

Latticed pentamode acoustic cloak.

Yi Chen1, Xiaoning Liu1, Gengkai Hu1

  • 1Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education, School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China.

Scientific Reports
|October 28, 2015
PubMed
Summary

This study presents a practical pentamode acoustic cloak design using microstructures. Introducing material damping improves its broadband performance for cloaking applications.

Area of Science:

  • Acoustics
  • Materials Science
  • Metamaterials

Background:

  • Acoustic cloaking aims to hide objects from sound waves.
  • Pentamode materials offer unique acoustic properties for cloaking.
  • Practical implementation of acoustic cloaks faces challenges.

Purpose of the Study:

  • To design and numerically demonstrate a practical pentamode acoustic cloak.
  • To investigate the impact of microstructure on cloak performance.
  • To identify and mitigate limitations for broadband cloaking.

Main Methods:

  • Numerical simulations were used to demonstrate the cloak's functionality.
  • A pentamode lattice structure made of a single-phase solid material was designed.
  • Material damping was introduced to address shear resonance issues.

More Related Videos

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

16.0K
Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication
10:16

Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication

Published on: December 2, 2011

14.6K

Related Experiment Videos

Last Updated: Mar 31, 2026

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging
04:54

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging

Published on: June 16, 2023

4.0K
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

16.0K
Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication
10:16

Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication

Published on: December 2, 2011

14.6K

Main Results:

  • The proposed pentamode cloak successfully reroutes acoustic waves numerically.
  • Shear resonance in practical lattices limits broadband cloaking to specific frequency ranges.
  • Introducing material damping significantly reduces shear resonance and improves broadband performance.

Conclusions:

  • Practical pentamode acoustic cloaks can be designed using microstructured lattices.
  • Shear resonance is a key challenge for broadband performance in such cloaks.
  • Material damping offers a viable strategy to enhance the broadband capabilities of pentamode acoustic cloaks, paving the way for experimental validation.