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

Surface Tension of Fluid01:22

Surface Tension of Fluid

678
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...
678
Surface Tension, Capillary Action, and Viscosity02:57

Surface Tension, Capillary Action, and Viscosity

30.6K
Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
30.6K
Network Covalent Solids02:18

Network Covalent Solids

15.1K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
15.1K
Fluid Mosaic Model01:19

Fluid Mosaic Model

14.1K
Scientists identified the plasma membrane in the 1890s and its principal chemical components (lipids and proteins) by 1915. The model for plasma membrane structure, proposed in 1935 by Hugh Davson and James Danielli, was the first model to be widely accepted in the scientific community. The model was based on the plasma membrane's "railroad track" appearance in early electron micrographs. Davson and Danielli theorized that the plasma membrane's structure resembled a sandwich...
14.1K
Structures of Solids02:22

Structures of Solids

16.0K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
16.0K
Mechanisms of Membrane-bending01:15

Mechanisms of Membrane-bending

3.0K
The living membranes are flexible due to their fluid mosaic nature; however, their bending into different shapes is an active process regulated by specific lipids and proteins. The membrane bending can be transient as seen in vesicles or stable for a long time as in microvilli. Cells regulate the size, location, and duration of the membrane curvature.
Membrane bending can happen due to intrinsic changes in lipid composition or extrinsic association with different proteins. The proteins involved...
3.0K

You might also read

Related Articles

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

Sort by
Same author

A damage accumulation model identifies distinct aging regimes across species.

Nature aging·2026
Same author

Walks in Rotation Spaces Return Home when Doubled and Scaled.

Physical review letters·2025
Same author

Life sets off a cascade of machines.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same author

AI-Predicted Protein Deformation Encodes Energy Landscape Perturbation.

Physical review letters·2024
Same author

Programmable Potentials Choreograph Defects in a Colloidal Crystal Shell.

Physical review letters·2024
Same author

Convergent evolution in a large cross-cultural database of musical scales.

PloS one·2023

Related Experiment Video

Updated: Oct 20, 2025

Forming, Confining, and Observing Microtubule-Based Active Nematics
08:37

Forming, Confining, and Observing Microtubule-Based Active Nematics

Published on: January 13, 2023

2.9K

Exceptional topology in ordinary soft matter.

Tsvi Tlusty1

  • 1Center for Soft and Living Matter, Institute for Basic Science, and Physics and Chemistry Departments, Ulsan National Institute of Science and Technology, Ulsan 44919, Korea.

Physical Review. E
|September 16, 2021
PubMed
Summary

Hydrodynamics in soft matter can create non-Hermitian topological phenomena. This research reveals bulk Fermi arcs and exceptional points in elastic lattices under viscous flow, enabling new topology-based technologies.

Area of Science:

  • Soft Matter Physics
  • Topological Physics
  • Hydrodynamics

Background:

  • Non-Hermitian phenomena are typically studied in synthetic materials.
  • Soft matter systems offer a new platform for exploring exotic physics.
  • Understanding hydrodynamics' role in material properties is crucial.

Purpose of the Study:

  • To demonstrate hydrodynamics-induced non-Hermitian topological phenomena in passive soft matter.
  • To investigate the formation of bulk Fermi arcs and exceptional points.
  • To explore the potential for topology-based technologies in soft matter.

Main Methods:

  • Subjecting a 2D elastic lattice to low-Reynolds viscous flow.
  • Utilizing analytic modeling and numerical simulations.

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

7.3K
Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

8.1K

Related Experiment Videos

Last Updated: Oct 20, 2025

Forming, Confining, and Observing Microtubule-Based Active Nematics
08:37

Forming, Confining, and Observing Microtubule-Based Active Nematics

Published on: January 13, 2023

2.9K
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

7.3K
Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

8.1K
  • Analyzing spectral band structures and density of states.

    • Main Results:

    • Hydrodynamics and elasticity interplay splits Dirac cones into bulk Fermi arcs.
    • Exceptional points with opposite half-integer topological charges are paired.
    • A web of van Hove singularity lines emerges in the density of states.

    Conclusions:

    • Non-Hermitian physics is achievable in ordinary soft matter.
    • Bulk Fermi arcs are a generic feature across symmetries.
    • This work opens avenues for topology-based soft matter technologies.