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Transmission Electron Microscopy

Transmission Electron Microscopy

In 1931, physicist Ernst Ruska—building on the idea that magnetic fields can direct an electron beam just as lenses can direct a beam of light in an optical microscope—developed the first prototype of the electron microscope. This development led to the development of the field of electron microscopy. In the transmission electron microscope (TEM), electrons are produced by a hot tungsten element and accelerated by a potential difference in an electron gun, which gives them up to 400 keV in...

Electron Microscope Tomography and Single-particle Reconstruction

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...

Overview of Electron Microscopy

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.

Scanning Electron Microscopy

Scanning Electron Microscopy

A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...

Overview of Microscopy Techniques

Overview of Microscopy Techniques

The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...

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Related Experiment Video

Updated: May 28, 2026

Studying Dynamic Processes of Nano-sized Objects in Liquid using Scanning Transmission Electron Microscopy

Studying Dynamic Processes of Nano-sized Objects in Liquid using Scanning Transmission Electron Microscopy

Published on: February 5, 2017

Nanomaterial engineering and property studies in a transmission electron microscope.

Dmitri Golberg¹, Pedro M F J Costa, Ming-Sheng Wang

¹Nanotube Unit, International Center for Materials, Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, Japan. GOLBERG.Dmitri@nims.go.jp

Advanced Materials (Deerfield Beach, Fla.)

|October 15, 2011

Summary

Advanced in situ transmission electron microscopy (TEM) enables precise nanoscale manipulation and analysis. This technique links mechanical and electrical data to nanomaterial properties for deeper insights.

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A Machine-Vision Approach to Transmission Electron Microscopy Workflows, Results Analysis and Data Management

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Last Updated: May 28, 2026

Studying Dynamic Processes of Nano-sized Objects in Liquid using Scanning Transmission Electron Microscopy

Studying Dynamic Processes of Nano-sized Objects in Liquid using Scanning Transmission Electron Microscopy

Published on: February 5, 2017

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

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

Published on: May 10, 2021

A Machine-Vision Approach to Transmission Electron Microscopy Workflows, Results Analysis and Data Management

A Machine-Vision Approach to Transmission Electron Microscopy Workflows, Results Analysis and Data Management

Published on: June 23, 2023

Area of Science:

Materials Science
Nanotechnology
Physics

Background:

In situ transmission electron microscopy (TEM) has advanced significantly.
Dedicated TEM holders integrate atomic force microscopy (AFM) and scanning tunneling microscopy (STM) probes.

Purpose of the Study:

To review the past, present, and future of in situ TEM methods for nanomaterials analysis.
To highlight the direct correlation of mechanical and electrical properties with nanomaterial characteristics.

Main Methods:

Utilizing in situ transmission electron microscopy (TEM) with integrated AFM/STM probes.
Performing nanoscale mechanical and electrical transport measurements on individual nanostructures.

Main Results:

Demonstrated precise manipulation of nanoscale objects with nanometer-range precision.
Acquired high-resolution mechanical and electrical data linked to morphological, structural, and chemical properties.
Analyzed diverse 1D and 2D nanomaterials including carbon and boron nitride.

Conclusions:

In situ TEM is a powerful tool for comprehensive nanomaterials analysis.
This methodology allows for a direct link between macroscopic properties and nanoscale features.
Future advancements promise deeper insights into nanomaterial behavior.