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

14.6K
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...
14.6K
Cell Inclusions01:27

Cell Inclusions

80
Prokaryotic cells possess a variety of inclusions that play crucial roles in nutrient storage, metabolic processes, and environmental adaptation. These structures enable bacteria to thrive under fluctuating environmental conditions by storing essential resources and optimizing their metabolic efficiency.Carbon Storage: Poly-β-Hydroxybutyric Acid and Glycogen GranulesBacteria frequently store excess carbon in specialized granules. Poly-β-hydroxybutyric acid (PHB) granules are lipid...
80
Types of Coprecipitation01:10

Types of Coprecipitation

768
Coprecipitation is the contamination of a precipitate by otherwise soluble species and occurs via different processes. In colloidal precipitates, coprecipitation occurs via surface adsorption. For instance, barium sulfate has a primary layer of adsorbed barium ions and a secondary layer of nitrate counterions. This results in contamination of the precipitate by barium nitrate.
Sometimes, ions in a crystal lattice can undergo isomorphous replacement by inclusions of similar charge and size. For...
768
Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

8.3K
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
8.3K
Recrystallization: Solid–Solution Equilibria01:10

Recrystallization: Solid–Solution Equilibria

1.2K
Recrystallization is a purification technique used to separate impurities from solid compounds. In this technique, no chemical reactions occur. Instead, it exploits physical properties only, specifically, the solubility differences between the desired compound and impurities, either at a single temperature or at different temperatures, and under other selected conditions. The solid-solution equilibrium (solubility equilibrium) of each component in the solution represents a binary phase...
1.2K
X-ray Crystallography02:18

X-ray Crystallography

24.1K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
24.1K

You might also read

Related Articles

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

Sort by
Same author

Newton-Krylov continuation of amplitude-modulated rotating waves in sheared annular electroconvection.

Physical review. E·2024
Same author

Transient Multimedia Model for Investigating the Influence of Indoor Human Activities on Exposure to SVOCs.

Environmental science & technology·2020
Same author

The heads and tails of buoyant autocatalytic balls.

Chaos (Woodbury, N.Y.)·2012
Same author

Frequency structure of the nonlinear instability of a dragged viscous thread.

Physical review. E, Statistical, nonlinear, and soft matter physics·2012
Same author

Lift and drag forces on an inclined plow moving over a granular surface.

Physical review. E, Statistical, nonlinear, and soft matter physics·2011
Same author

Experiments on the morphology of icicles.

Physical review. E, Statistical, nonlinear, and soft matter physics·2011
Same journal

Erratum: Low-dimensional model for adaptive networks of spiking neurons [Phys. Rev. E 111, 014422 (2025)].

Physical review. E·2026
Same journal

Disentangling the effects of many-body forces on depletion interactions.

Physical review. E·2026
Same journal

Charge transport and mode transition in dual-energy electron beam diodes.

Physical review. E·2026
Same journal

Optimization of multisite reactions in complex compartmentalized media.

Physical review. E·2026
Same journal

Origin of geometric cohesion in nonconvex granular materials: Interplay between interdigitation and rotational constraints enhancing frictional stability.

Physical review. E·2026
Same journal

Interaction of walkers with a standing Faraday wave.

Physical review. E·2026
See all related articles

Related Experiment Video

Updated: Aug 16, 2025

Single Particle Cryo-Electron Microscopy: From Sample to Structure
11:52

Single Particle Cryo-Electron Microscopy: From Sample to Structure

Published on: May 29, 2021

8.7K

Pattern of inclusions inside rippled icicles.

John Ladan1, Stephen W Morris1

  • 1Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S 1A7.

Physical Review. E
|December 23, 2022
PubMed
Summary
This summary is machine-generated.

Ripples on icicles are caused by impurities. These impurities form chevron patterns inside the ice, revealing new insights into icicle growth and instabilities.

More Related Videos

Exfoliation and Analysis of Large-area, Air-Sensitive Two-Dimensional Materials
10:18

Exfoliation and Analysis of Large-area, Air-Sensitive Two-Dimensional Materials

Published on: January 5, 2019

11.8K
Determining the Ice-binding Planes of Antifreeze Proteins by Fluorescence-based Ice Plane Affinity
08:46

Determining the Ice-binding Planes of Antifreeze Proteins by Fluorescence-based Ice Plane Affinity

Published on: January 15, 2014

9.2K

Related Experiment Videos

Last Updated: Aug 16, 2025

Single Particle Cryo-Electron Microscopy: From Sample to Structure
11:52

Single Particle Cryo-Electron Microscopy: From Sample to Structure

Published on: May 29, 2021

8.7K
Exfoliation and Analysis of Large-area, Air-Sensitive Two-Dimensional Materials
10:18

Exfoliation and Analysis of Large-area, Air-Sensitive Two-Dimensional Materials

Published on: January 5, 2019

11.8K
Determining the Ice-binding Planes of Antifreeze Proteins by Fluorescence-based Ice Plane Affinity
08:46

Determining the Ice-binding Planes of Antifreeze Proteins by Fluorescence-based Ice Plane Affinity

Published on: January 15, 2014

9.2K

Area of Science:

  • Physics
  • Materials Science
  • Geophysics

Background:

  • Icicles grown from impure water exhibit circumferential ripples.
  • These ripples are associated with a morphological instability.
  • The underlying mechanism of ripple formation remains unclear.

Purpose of the Study:

  • To investigate the role of impurities in icicle ripple formation.
  • To characterize the internal structure of laboratory-grown icicles.
  • To elucidate the mechanism behind the ripple-forming instability.

Main Methods:

  • Laboratory cultivation of icicles using water with various impurities (e.g., fluorescent dye).
  • Microscopic examination of internal ice structures, including impurity inclusions and crystal grain boundaries.
  • Analysis of impurity distribution and organization within the ice matrix.

Main Results:

  • Impurities are trapped within the ice, forming inclusions organized into chevron patterns.
  • These chevrons align with the ripple peaks on the icicle surface.
  • A substructure of crescent-shaped formations is observed within the chevrons.
  • Differences in crystal grain structure were noted between pure and impure icicles.

Conclusions:

  • Impurities play a crucial role in the formation of internal growth patterns in icicles.
  • The observed chevron patterns provide evidence supporting specific models of morphological instability.
  • This study offers the first detailed examination of internal icicle growth patterns and their link to surface ripple formation.