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

Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

11.3K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
11.3K
Crystal Growth: Principles of Crystallization01:25

Crystal Growth: Principles of Crystallization

4.7K
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...
4.7K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

30.5K
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...
30.5K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

48.1K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
48.1K
Ionic Crystal Structures02:42

Ionic Crystal Structures

16.8K
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...
16.8K
X-ray Crystallography02:18

X-ray Crystallography

25.7K
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...
25.7K

You might also read

Related Articles

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

Sort by
Same author

Stabilizing in-transition phases of superlattices through shape control of silver nanocrystals.

Science (New York, N.Y.)·2026
Same author

Exploring entropy landscapes using hard particle Monte Carlo metadynamics.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Intermetallic nanoassemblies potentiate systemic STING activation.

Science (New York, N.Y.)·2026
Same author

Unveiling metastable intermediates of block copolymer self-assembly in colloids via graphene liquid cell imaging.

Journal of colloid and interface science·2026
Same author

Quantifying local point-group-symmetry order in complex particle systems.

The Journal of chemical physics·2026
Same author

Engineering low-symmetry colloidal crystals with optical anisotropies.

Science advances·2026

Related Experiment Video

Updated: Jan 12, 2026

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
06:57

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

Published on: July 17, 2020

2.6K

Defect-Free Growth of Decagonal Quasicrystals around Obstacles.

Kelly L Wang1, Insung Han2, Domagoj Fijan3

  • 1University of Michigan, Macromolecular Science and Engineering Program, Ann Arbor, Michigan 48109, USA.

Physical Review Letters
|October 31, 2025
PubMed
Summary
This summary is machine-generated.

Quasicrystal growth around obstacles is defect-free, revealing a universal property of aperiodic solids. This discovery enables synthesizing large, single quasicrystals from liquid metal.

More Related Videos

Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization
07:50

Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization

Published on: July 17, 2015

11.6K
Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

14.3K

Related Experiment Videos

Last Updated: Jan 12, 2026

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
06:57

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

Published on: July 17, 2020

2.6K
Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization
07:50

Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization

Published on: July 17, 2015

11.6K
Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

14.3K

Area of Science:

  • Materials Science
  • Solid State Physics
  • Crystallography

Background:

  • Quasicrystals are aperiodic solids with unique physical properties.
  • The growth mechanisms of quasicrystals, especially around obstacles, remain poorly understood.

Purpose of the Study:

  • To investigate the interaction between decagonal quasicrystals and shrinkage pores during alloy solidification.
  • To understand how quasicrystal growth is affected by rigid obstacles.

Main Methods:

  • In situ synchrotron X-ray tomography was employed to observe the growth process.
  • Molecular dynamics simulations were used to model the quasicrystal-obstacle interactions.

Main Results:

  • Defect-free quasicrystal growth was observed around shrinkage pores.
  • The growth was independent of pore size and geometry, indicating a robust mechanism.
  • The findings highlight the role of phasonic degrees of freedom in accommodating structural disruptions.

Conclusions:

  • Quasicrystals exhibit a universal ability to grow defect-free around obstacles due to their inherent structural flexibility.
  • This research paves the way for producing large-scale, single quasicrystals from liquid metal precursors.