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

Ionic Crystal Structures02:42

Ionic Crystal Structures

17.7K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
17.7K
Crystal Growth: Principles of Crystallization01:25

Crystal Growth: Principles of Crystallization

5.1K
Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
5.1K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

31.0K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
31.0K
Phase Diagrams02:39

Phase Diagrams

50.4K
A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
50.4K
Phase Transitions02:31

Phase Transitions

23.3K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
23.3K
Assembly of the Lipid Bilayer in the ER01:28

Assembly of the Lipid Bilayer in the ER

4.3K
Biological membranes are more than just a barrier separating cell cytoplasm from the outside environment. They are highly dynamic and help maintain the integrity and physiological stability of the cells as well as membrane-bound organelles. Membranes also play vital roles in cell-to-cell and intracellular communication.
A large chunk of any biological membrane is composed of phospholipids. These lipids have a heterogeneous distribution across different subcellular organelles and even between...
4.3K

You might also read

Related Articles

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

Sort by
Same author

Observation of Higher-Dimensional Point-Gap Bulk-Boundary Correspondence.

Physical review letters·2026
Same author

Quantum Geometric Inequality and Its Classical Wave Verification.

Physical review letters·2026
Same author

Experimental Observation of Hidden Multistability in Nonlinear Systems.

Physical review letters·2026
Same author

Harmonic non-Hermitian skin effect.

Nature communications·2026
Same author

Observation of momentum-band topology in PT-symmetric Floquet lattices.

Nature communications·2025
Same author

Observation of Dislocation Non-Hermitian Skin Effect in a Torus-like Acoustic Metamaterial.

Advanced materials (Deerfield Beach, Fla.)·2025

Related Experiment Video

Updated: Feb 12, 2026

Lipid Bilayer Experiments with Contact Bubble Bilayers for Patch-Clampers
07:18

Lipid Bilayer Experiments with Contact Bubble Bilayers for Patch-Clampers

Published on: January 16, 2019

10.2K

Valley Topological Phases in Bilayer Sonic Crystals.

Jiuyang Lu1, Chunyin Qiu2, Weiyin Deng1

  • 1School of Physics and Optoelectronic Technology, South China University of Technology, Guangzhou, Guangdong 510640, China.

Physical Review Letters
|March 31, 2018
PubMed
Summary

We demonstrate a novel bilayer sonic crystal design exhibiting rich topological phases. This acoustic topological insulator features unique edge states, paving the way for advanced sound communication devices.

More Related Videos

Author Spotlight: High-Throughput Screening to Obtain Crystal Hits for Protein Crystallography
06:19

Author Spotlight: High-Throughput Screening to Obtain Crystal Hits for Protein Crystallography

Published on: March 10, 2023

5.7K
Ligand Nano-cluster Arrays in a Supported Lipid Bilayer
10:34

Ligand Nano-cluster Arrays in a Supported Lipid Bilayer

Published on: April 23, 2017

7.3K

Related Experiment Videos

Last Updated: Feb 12, 2026

Lipid Bilayer Experiments with Contact Bubble Bilayers for Patch-Clampers
07:18

Lipid Bilayer Experiments with Contact Bubble Bilayers for Patch-Clampers

Published on: January 16, 2019

10.2K
Author Spotlight: High-Throughput Screening to Obtain Crystal Hits for Protein Crystallography
06:19

Author Spotlight: High-Throughput Screening to Obtain Crystal Hits for Protein Crystallography

Published on: March 10, 2023

5.7K
Ligand Nano-cluster Arrays in a Supported Lipid Bilayer
10:34

Ligand Nano-cluster Arrays in a Supported Lipid Bilayer

Published on: April 23, 2017

7.3K

Area of Science:

  • Topological physics
  • Acoustics
  • Condensed matter physics

Background:

  • Topological physics in artificial crystals for classical waves is an emerging research area.
  • Topological insulators exhibit unique edge states with potential applications.

Purpose of the Study:

  • To propose a unique bilayer design of sonic crystals for exploring topological phases.
  • To analytically distinguish different types of topological acoustic insulators.
  • To confirm theoretical predictions with numerical and experimental observations.

Main Methods:

  • Designing a bilayer sonic crystal with coupled hexagonal arrays of triangular scatterers.
  • Utilizing the layer degree of freedom and scatterer rotation to achieve topological phase diagrams.
  • Developing a unified theoretical framework to analyze valley-projected topological acoustic insulators.
  • Conducting numerical simulations and experimental observations to verify theoretical findings.

Main Results:

  • A rich topological phase diagram is achieved by rotating scatterers in both layers of the sonic crystal.
  • Two distinct valley-projected topological acoustic insulators are identified: layer-mixed and layer-polarized topological valley Hall phases.
  • Nontrivial edge states propagating along interfaces between different topological phases are observed and confirmed.
  • The proposed design demonstrates the feasibility of acoustic topological insulators with tunable properties.

Conclusions:

  • The bilayer sonic crystal design offers a versatile platform for exploring rich topological phenomena in acoustics.
  • The identified topological phases and edge states provide a foundation for novel acoustic devices.
  • The study highlights the potential of acoustic topological insulators for applications like sound communications in integrated devices.