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Related Concept Videos

Molecular Models02:00

Molecular Models

Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
Atomic Force Microscopy01:08

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
Overview of Electron Microscopy01:25

Overview of Electron Microscopy

The wavelengths of visible light ultimately limit the maximum theoretical resolution of images created by light microscopes. Most light microscopes can only magnify 1000X, and a few can magnify up to 1500X. Electrons, like electromagnetic radiation, can behave like waves, but with wavelengths of 0.005 nm, they produce significantly greater resolution up to 0.05 nm as compared to 500 nm for visible light. An electron microscope (EM) can create a sharp image that is magnified up to 2,000,000X.
Atomic Structure01:33

Atomic Structure

All matter is composed of atoms, the smallest individual units of elements. Each atom is made up of three subatomic particles: protons, neutrons, and electrons. Together, these three particles account for the mass and the charge of an atom.The History of Atomic TheoryThe first person to propose that everything on Earth is made up of tiny particles was the Greek philosopher Democritus, around 450 B.C. He used the term atomos, Greek for “indivisible,” from which the modern term “atom” is derived.
Atomic Structure01:17

Atomic Structure

The Greek philosopher Democritus proposed that everything on Earth is made up of tiny particles called atomos, Greek for "indivisible," from which the modern term "atom" is derived. In the 19th century, John Dalton proposed the atomic theory that is still largely correct today. He put forth five postulates to explain how atoms made up the world around us. (1) All matter is composed of infinitely small particles or atoms. (2) All atoms of a given element are identical to one another and (3) are...
Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...

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Related Experiment Video

Updated: Jun 16, 2026

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
07:24

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis

Published on: May 10, 2021

Visualizing materials chemistry at atomic resolution.

Sergio I Sanchez1, Matthew W Small, Shankar Sivaramakrishnan

  • 1Department of Chemistry, University of Illinois Urbana-Champaign, USA.

Analytical Chemistry
|February 23, 2010
PubMed
Summary
This summary is machine-generated.

Analytical electron microscopy is advancing rapidly, promising to revolutionize materials chemistry by revealing complex atomic and electronic structures. This technology offers unprecedented insights into material properties and behaviors.

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Revealing Dynamic Processes of Materials in Liquids Using Liquid Cell Transmission Electron Microscopy

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Related Experiment Videos

Last Updated: Jun 16, 2026

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
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Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis

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Revealing Dynamic Processes of Materials in Liquids Using Liquid Cell Transmission Electron Microscopy
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Revealing Dynamic Processes of Materials in Liquids Using Liquid Cell Transmission Electron Microscopy

Published on: December 20, 2012

Area of Science:

  • Materials Chemistry
  • Analytical Chemistry
  • Physical Chemistry

Background:

  • Analytical electron microscopy (AEM) is a powerful technique for characterizing materials at the atomic level.
  • Recent advancements in electron optics and detector technology have significantly enhanced AEM capabilities.

Purpose of the Study:

  • To highlight the transformative potential of modern AEM in materials chemistry.
  • To discuss how AEM can elucidate complex phenomena related to atomic and electronic structure.

Main Methods:

  • Advances in electron optics.
  • Development of novel electron detectors.
  • Application of AEM to materials chemistry problems.

Main Results:

  • Enhanced resolution and sensitivity in AEM.
  • Improved ability to probe atomic and electronic structures.
  • New understanding of complex phenomena in materials.

Conclusions:

  • AEM is set to revolutionize materials chemistry.
  • The technique provides critical insights into structure-property relationships.
  • Future research will benefit from these technological leaps.