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Related Concept Videos

Structures of Solids02:22

Structures of Solids

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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...
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Unit Cells01:18

Unit Cells

48
A crystal's internal structure is an orderly array of atoms, ions, or molecules, and the details of this array significantly influence the solid's properties. In a crystal, periodically repeating 'structural motifs' - which could be atoms, molecules, or groups thereof - create a 'space lattice.' This is essentially a three-dimensional, infinite array of points, each surrounded by its neighbors in an identical way, forming the basic structure of the crystal.A 'unit cell' is a theoretical...
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Crystal Growth: Principles of Crystallization01:25

Crystal Growth: Principles of Crystallization

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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...
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Ionic Crystal Structures02:42

Ionic Crystal Structures

19.9K
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...
19.9K
The Seven Crystal Systems: Overview01:24

The Seven Crystal Systems: Overview

87
Crystals with various point group symmetries belong to different crystal classes, which are synonymous terms. Despite being in the same class, crystals may have distinct shapes, like cubes and octahedra. There are 32 three-dimensional point groups, all of which are systematically divided into seven crystal systems.The basic cubic crystal system, exemplified by NaCl, features orthogonal vectors (α = β = �� = 90°) of equal lengths (a = b = c). When specific...
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The Bone Matrix01:18

The Bone Matrix

6.7K
Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in...
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Updated: Mar 16, 2026

Harvesting and Cryo-cooling Crystals of Membrane Proteins Grown in Lipidic Mesophases for Structure Determination by Macromolecular Crystallography
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Harvesting and Cryo-cooling Crystals of Membrane Proteins Grown in Lipidic Mesophases for Structure Determination by Macromolecular Crystallography

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Mesocrystals: structural and morphogenetic aspects.

Elena V Sturm Née Rosseeva1, Helmut Cölfen1

  • 1Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstr. 10, D-78457 Konstanz, Germany. elena.sturm@uni-konstanz.de helmut.coelfen@uni-konstanz.de.

Chemical Society Reviews
|August 10, 2016
PubMed
Summary
This summary is machine-generated.

Mesocrystals are nanostructured materials merging nanoparticle properties with larger-scale order. This review explores their unique structures and formation mechanisms, offering insights into controlling their assembly.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Crystallography

Background:

  • Mesocrystals are advanced nanostructured materials.
  • They exhibit properties of both nanoparticles and ordered crystalline structures.
  • Understanding their unique structural and formation principles is crucial.

Purpose of the Study:

  • To review the structural aspects of mesocrystals.
  • To elucidate the known formation mechanisms of mesocrystals.
  • To explore the control over mesocrystal formation processes.

Main Methods:

  • Literature review of mesocrystal research.
  • Analysis of structural characteristics.
  • Discussion of formation pathways and control strategies.

Main Results:

  • Mesocrystals exhibit unique structuration principles.
  • Their formation involves specific self-assembly mechanisms.
  • Control over formation allows tailoring of properties.

Conclusions:

  • Mesocrystals offer a unique combination of properties.
  • Further understanding of formation mechanisms is key to their application.
  • Controlling mesocrystal assembly enables novel material design.