Transmission Electron Microscope

Operated by Brookhaven's Materials Science Department, the 300,000 electron-volt high-resolution Transmission Electron Microscope (TEM) was manufactured under Brookhaven's direction by the Japanese Electro-Optical Laboratory of Tokyo. A structure characterization facility that can be used on various materials, TEM produces information that complements both neutron and synchrotron x-ray studies.

The best of its kind in the U.S., TEM can magnify a sample up to 50 million times its size, with a spatial resolution of 0.1 nanometer (nm). It also has many state-of-the-art attachments that provide powerful tools for researchers to study crystal structure, electronic structure, and chemical composition of materials. TEM has an energy filter, an x-ray energy dispersive spectrometer, an electron energy-loss spectrometer, and several digital data recording systems. TEM is also equipped with a holography unit, a scanning attachment with chemical mapping resolution better than 1 nm, and cooling and heating in-situ stages that can heat or cool specimens to temperatures ranging from 15-1300 kelvins (-258 to +1027 degrees Celsius).

Another unique capability of this TEM is its minimum probe size -down to approximately 0.3 nm. This is extremely useful for nano-technology research, which can reveal remarkable amounts of structural information from a sub-nanometer volume.

Go to the TEM web page

Last Modified: January 31, 2008

One of ten national laboratories overseen and primarily funded by the Office of Science of the U.S. Department of Energy (DOE), Brookhaven National Laboratory conducts research in the physical, biomedical, and environmental sciences, as well as in energy technologies and national security. Brookhaven Lab also builds and operates major scientific facilities available to university, industry and government researchers. Brookhaven is operated and managed for DOE's Office of Science by Brookhaven Science Associates, a limited-liability company founded by the Research Foundation for the State University of New York on behalf of Stony Brook University, the largest academic user of Laboratory facilities, and Battelle, a nonprofit, applied science and technology organization.

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