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FEI Titan 80-300, a dedicated Environmental Transmission Electron microscope (E-TEM)

Contact: Eric Stach, James Ciston

This instrument is the first 80-300kV field-emission environmental transmission electron microscope to be installed in the US with an objective-lens aberration corrector. It has a spatial resolution of 0.08nm in the high-resolution phase contrast mode, and is capable of achieving this resolution at unusually high pressures due to the differential pumping apertures and custom pumping arrangement that is incorporated with the system. The maximum gas pressure for the environmental-cell is about 20mbar for N2, with other maximum pressures dependent on the atomic weight of the gas. As a result, this instrument is uniquely well-suited to imaging the fundamental mechanisms of catalysis and catalyzed nanostructure growth. The instrument has also scanning transmission imaging (STEM), magnetic imaging, and chemical analysis capabilities. It has a Lorentz lens and a bi-prism for imaging electrostatic and magnetic potentials or fields in materials. It is also equipped with an energy dispersive x-ray spectrometer and an electron energy-loss image filter spectrometer.  A mass-flow controlled catalytic reaction system capable of providing controlled pressures of gas mixtures will be installed in the near future.

Specifications

  300 kV 300 kV E-TEM 80 kV 80 kV E-TEM
TEM Information Limit 80 pm < 120 pm 150 pm < 200 pm
TEM Point Resolution 80 pm < 140 pm 150 pm < 200 pm
Energy Resolution (EELS) 0.8 eV 0.8 eV 0.8 eV 0.8 eV
STEM Resolution 140 pm 200 pm <300 pm <300 pm
Probe current (1nm) 0.6 nA 0.6 nA 0.6 nA 0.6 nA
Spherical aberration <1 um <1 um <1 um <1 um

Sample Holders

Holder Alpha Beta Notes
Double tilt,  low x-ray background ±40 deg ±30 deg Beryllium sample cup
Single tilt tomography ±70 deg N/A  
Single Tilt heating (800c max) ±40 deg N/A Vacuum environment only
Double Tilt heating (800c max) ±30 deg ±15 deg E-TEM compatible
Nanofactory STM single tilt (coming soon) ±30 deg N/A In-situ electrical probing, I/V curves, scanning probe imaging
Protochips Aduro double tilt heating (coming soon) ±30 deg ±15 deg E-TEM compatible, 1000c max, 1000deg/ms heating rate

Instrument images

Figure 1

Image of Titan microscope with noise-reducing covers installed.

Figure 2

Image of the rear of the Titan microscope showing detail of the gas handling and injection system including mass spectrometer, valve systems, and ion pumps. 

 

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Last Modified: January 10, 2011
Please forward all questions about this site to: Pam Ciufo.

 


DOE, Office of Science 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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