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

Reflection of Waves01:07

Reflection of Waves

4.6K
When a wave travels from one medium to another, it gets reflected at the boundary of the second medium. A common example of this is when a person yells at a distance from a cliff and hears the echo of their voice. The sound waves (longitudinal waves) traveling in the air are reflected from the bounding cliff. Similarly, flipping one end of a string whose other end is tied to a wall causes a pulse (transverse wave) to travel through the string, which gets reflected upon reaching the wall. In...
4.6K
The Sense of Self: Reflected Self-Appraisal and Social Comparison02:57

The Sense of Self: Reflected Self-Appraisal and Social Comparison

55.9K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
55.9K
Negative Regulator Molecules01:23

Negative Regulator Molecules

38.5K
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
38.5K
Positive, Negative, and Zero Work00:58

Positive, Negative, and Zero Work

22.1K
Work is done on an object when energy is transferred to the object. In other words, work is done when a force acts on a body that undergoes a displacement from one position to another. By definition, the work done by a force is the integral of the force with respect to the displacement along its path. Forces can vary as a function of position, and displacements can occur along various paths between two points. The magnitude of a force multiplied by the cosine of the angle that the force makes...
22.1K
Influence of Earth's Curvature and Atmospheric Refraction on Leveling01:26

Influence of Earth's Curvature and Atmospheric Refraction on Leveling

908
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
908
Negative and Cognitive Symptoms of Schizophrenia01:30

Negative and Cognitive Symptoms of Schizophrenia

532
Negative symptoms of schizophrenia indicate a reduction or absence of typical behaviors and emotional responses found in healthy individuals, while positive symptoms reflect an excess or distortion of normal functioning.
Negative Symptoms
Negative symptoms of schizophrenia manifest as deficits in normal emotional and behavioral functioning, profoundly impacting daily life. Individuals with schizophrenia often display a flat affect, characterized by a near-total absence of emotional expression,...
532

You might also read

Related Articles

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

Sort by
Same author

Clinically Significant Changes in Global Cervical Range of Motion Following Anterior Cervical Discectomy and Fusion: A Systematic Review.

JBJS reviews·2026
Same author

Surgical Management of Spinal Chondrosarcoma: Retrospective Case Series and Systematic Review of the Literature.

Operative neurosurgery (Hagerstown, Md.)·2026
Same author

Milk Extracellular Vesicle-mediated Delivery of siPRNP Suppresses Growth and Wound Closure in PC-3M Prostate Cancer Cells.

Anticancer research·2026
Same author

Incidence and Causes of Death after Cervical or Thoracolumbar Adult Spinal Deformity Surgery.

Spine·2026
Same author

Neurologic Adverse Events Following Three-Column Osteotomy for Adult Spine Deformities: A Prospective Multicenter Study.

Spine·2026
Same author

miR-4516-Loaded Engineered Milk Extracellular Vesicles Attenuate Indoxyl Sulfate-Induced Mitochondrial Dysfunction and Improve Renal Function in a CKD Mouse Model.

International journal of molecular sciences·2026

Related Experiment Video

Updated: Jan 28, 2026

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
09:39

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Published on: June 28, 2024

1.6K

Zero-reflection acoustic metamaterial with a negative refractive index.

Choon Mahn Park1, Sang Hun Lee2

  • 1Dong-A University, Department of Materials Physics, Busan, 49315, South Korea.

Scientific Reports
|March 6, 2019
PubMed
Summary

Researchers developed a novel acoustic metamaterial with zero reflection, enhancing sound wave manipulation. This breakthrough in acoustic metamaterials offers improved performance for devices like invisibility cloaks and super-lenses.

More Related Videos

Fabricating Metamaterials Using the Fiber Drawing Method
11:57

Fabricating Metamaterials Using the Fiber Drawing Method

Published on: October 18, 2012

14.3K
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

15.9K

Related Experiment Videos

Last Updated: Jan 28, 2026

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
09:39

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Published on: June 28, 2024

1.6K
Fabricating Metamaterials Using the Fiber Drawing Method
11:57

Fabricating Metamaterials Using the Fiber Drawing Method

Published on: October 18, 2012

14.3K
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

15.9K

Area of Science:

  • Acoustics
  • Materials Science
  • Metamaterials

Background:

  • Wave reflection occurs at the interface of different media.
  • Reducing reflection is crucial for advanced materials, particularly acoustic metamaterials.

Purpose of the Study:

  • To theoretically develop a balanced acoustic metamaterial with zero reflection.
  • To achieve zero reflection across the entire refractive index range, irrespective of its sign.

Main Methods:

  • Theoretical development of a balanced acoustic metamaterial.
  • Unit cell design using membranes and open tubes.
  • Experimental verification of material performance.

Main Results:

  • Demonstrated zero reflection between the metamaterial and air.
  • Achieved sound reflectance below 10% within the homogeneous medium condition frequency range.
  • Verified performance across the full refractive index range, including negative values.

Conclusions:

  • The developed acoustic metamaterial achieves broadband zero reflection.
  • This innovation can significantly enhance acoustic devices like invisibility cloaks and super-lenses.
  • Contributes to fundamental research in acoustic metamaterials and wave manipulation.