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

Parallel Resonance01:23

Parallel Resonance

274
The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
274
Sound Waves: Resonance01:14

Sound Waves: Resonance

2.7K
Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...
2.7K
Design Example01:23

Design Example

372
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
372
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

293
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
293
Sound Waves: Interference00:53

Sound Waves: Interference

3.9K
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...
3.9K
Resonance and Hybrid Structures02:16

Resonance and Hybrid Structures

18.3K
According to the theory of resonance, if two or more Lewis structures with the same arrangement of atoms can be written for a molecule, ion, or radical, the actual distribution of electrons is an average of that shown by the various Lewis structures.
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.
18.3K

You might also read

Related Articles

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

Sort by
Same author

Safety, efficacy, and pharmacokinetics of eratrectinib (VC004) in solid tumors with NTRK fusions: phase 1 results from a phase 1/2 study.

Experimental hematology & oncology·2026
Same author

Zinc accumulation as a primary contributor to co-exposure toxicity with 6PPD-quinone in earthworms: Multi-level evidence.

Journal of hazardous materials·2026
Same author

Efficacy and safety of toripalimab in combination with cetuximab in patients with recurrent or metastatic head and neck squamous cell carcinoma (R/M HNSCC): a phase 1b/2 study.

Signal transduction and targeted therapy·2026
Same author

Spatial Patterns and Ecological Drivers of Sedimentary Eukaryotic Microorganisms Across Typical Depositional Zones of Lake Taihu.

Microorganisms·2026
Same author

How does teacher support impact the academic achievement of boarding junior high school students? The mediating role of academic self-concept and the moderating effect of academic anxiety.

Frontiers in psychology·2026
Same author

Case report of a rare TCF3::BEND2-fused primary intracranial neuroepithelial neoplasm in a female child.

Brain tumor pathology·2026
Same journal

Reassessing the Proposed Creatine-PrP Axis in Endometriosis: Methodological and Mechanistic Considerations.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same journal

IL-7R-Enriched Extracellular Vesicles From the Thymus Drive Colitis via Promoting Neutrophil Extracellular Trap Formation.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same journal

Oral Prebiotic Polysaccharide Hydrogels Sustaining Colon Antibody Release Alleviate Inflammatory Bowel Disease.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same journal

Systematic Phosphorus-Driven Structural and Field Engineering of n-a-Si:H for Flexible n-a-Si:H/Te Near-Infrared Photodetectors.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same journal

Chemically Gradient Ordered Nanodomains Enable Large Tensile Ductility in Gigapascal Lightweight Refractory High-Entropy Alloys.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same journal

Single-Molecule Characterization of Bacterial Factor-Dependent Transcription Activation by Rob.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
See all related articles

Related Experiment Video

Updated: Sep 11, 2025

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

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

15.5K

Switchable Bidirectional Sound Absorption Via Exceptional Point Modulation in Acoustic Metastructures with

Zichao Guo1,2, Liangfen Du3, Zirui Yang2

  • 1School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, 410075, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|August 11, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a novel acoustic metamaterial capable of switchable bidirectional sound absorption. This breakthrough overcomes limitations of unidirectional devices, offering enhanced noise control in compact, subwavelength structures.

Keywords:
acoustic metastructuresbidirectional absorptionexceptional pointinterleaved resonators

More Related Videos

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
09:39

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Published on: June 28, 2024

1.1K
Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
06:51

Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations

Published on: August 21, 2018

7.1K

Related Experiment Videos

Last Updated: Sep 11, 2025

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

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

15.5K
Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
09:39

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Published on: June 28, 2024

1.1K
Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
06:51

Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations

Published on: August 21, 2018

7.1K

Area of Science:

  • Acoustics
  • Materials Science
  • Physics

Background:

  • Acoustic metamaterials enable advanced sound wave manipulation.
  • Sound-absorbing metamaterials offer subwavelength control and high-efficiency absorption.
  • Existing designs often lack bidirectional absorption, limiting applications.

Purpose of the Study:

  • To present a switchable bidirectional acoustic metastructure.
  • To achieve broadband and frequency-selective absorption in both directions.
  • To develop a generalized theoretical framework for EP-based switching strategies.

Main Methods:

  • Integrating interleaved resonator coupling with exceptional point (EP) modulation.
  • Coordinating resonant interactions via impedance matching and controlled energy dissipation.
  • Validating performance through theoretical, numerical, and experimental analyses.

Main Results:

  • Demonstrated broadband absorption (478–670 Hz) and discrete peaks (260, 542 Hz) under opposite incidences.
  • Achieved deep-subwavelength scale absorption with robust bidirectional performance.
  • Developed a generalized framework for translating acoustic parameters into impedance forms for EP-based switching.

Conclusions:

  • The proposed metastructure offers practical, high-performance bidirectional acoustic wave control.
  • The developed theoretical framework enables functional extension from unidirectional to bidirectional absorption.
  • This work presents a novel physics-driven pathway for advanced acoustic manipulation.