STEM Microscope | Themis Environmental TEM | Thermo Fisher Scientific

Environmental TEM with the Themis ETEM

In situ observation of structure dynamics at nanostructure-characteristic length scales is extremely important if your focus is atomic-scale research. The Thermo Scientific Themis ETEM builds on the proven Titan Environmental Transmission Electron Microscope (ETEM) concept by combining both standard  TEM/STEM (TEM and scanning transmission electron microscopy) and dedicated environmental TEM capabilities for time-resolved, in situ studies of the dynamic behavior of nanomaterials. The Themis ETEM is designed as a fully integrated platform for in situ experiments, such as exposing nanostructures to gaseous reaction/operating environments.

Environmental TEM advantages

The new Themis ETEM now also benefits from Thermo Scientific Themis Z S/TEM features:

Precise control and knowledge of sample temperature in any gas environment through the NanoEx-i/v heating stage.
Improved sample stability, navigation, and assisted sample drift correction in x, y, and z axes using a piezo enhanced stage.
Advanced high-quality imaging and movie acquisition functions, as well as sample navigation, by combining speed, high-sensitivity, and high-dynamic range with a large field of view in one single Thermo Scientific Ceta 16M Camera.
Handling and processing of large data sets with a 64-bit operating system.

Themis ETEM features

Automation and ease of use

Through full software control of all operational parameters - for novice users as well as advanced operators.

Window-free imaging

Through innovative differentially-pumped objective lens.

Precise control of vacuum system

Including fast switching between different vacuum modes.

Accurate monitoring of gas composition

Through built-in reactant gas analysis via mass-spectrometer (RGA).

Easy decontamination and system flushing

Via the integrated plasma cleaner.

Electron gun protection

To maintain high vacuum even during gaseous experiments.

Fine electron dose (rate) control

Using flexible gun lens and condenser settings.

Easy sample handling

Through an innovative differentially-pumped specimen area and full double-tilt capability as well as standard TEM holder compatibility.

Safe operation mode

Through full compliance with safety regulations and protocols for gas handling.

Specifications

产品表格规范样式表

	Standard mode		ETEM mode (< 0.5 mbar nitrogen)
	No corrector	C_s image corrected	No corrector	C_s image corrected
TEM information limit (nm)	0.10	0.10 (0.09 mono on)	0.12	0.12
TEM point resolution (nm)	0.20	0.10	0.20	0.12
*Probe current @ 1 nm (nA)**	0.6	0.6	0.6	0.6
*Probe current @ 1 nm (nA)**	0.7 eV	0.7 eV	0.8 eV	0.8 eV
STEM resolution (nm)	0.136	0.136	0.16	0.16

Note: All specifications are at 300kV.
* With SFEG. The ETEM is also optionally available with X-FEG and gun monochromator. Depending on the energy filter option the energy resolution could be 0.20 eV (0.25eV in ETEM mode).

Style Sheet for Komodo Tabs

Resources

Soot particles observed to move with constant velocity towards CeO2.

Dynamic ETEM study (2.0 mbar O₂, 475°C) of soot oxidization near the soot-CeO₂ interface. Soot particles observed to move with constant velocity towards CeO₂. Image courtesy of S. Simonsen and S. Helveg (HTAS), as seen in S.B. Simonsen, et al., J. Catal. 225 (1), 2008.

Introducing the Thermo Scientific ETEM Solution.
Thermo Scientific ETEM is the dedicated atomic-resolution Scanning/Transmission Electron Microscope (S/TEM) solution for time-resolved studies of the behavior of nanomaterials during exposure to reactive gas environments and elevated temperatures. Designed specifically for these in-situ, dynamic experiments in catalysis.

Professor Seiji Takeda (Osaka University, Japan) explains the value of the Thermo Scientific ETEM solution for quantitative in-situ microscopy in materials science research.

Dr Hideto Yoshida (Osaka University, Japan) discusses the ease-of-use of the Thermo Scientific ETEM solution and highlights the achievement of more detailed atomic structure information in his materials research.

Publication list for Themis ETEM for Materials Science

Title: Stable amorphous georgeite as a precursor to a high-activity catalyst
Authors: Simon A. Kondrat, Paul J. Smith, Peter P. Wells, Philip A. Chater, James H. Carter, David J. Morgan, Elisabetta M. Fiordaliso, Jakob B. Wagner, Thomas E. Davies, Li Lu, Jonathan K. Bartley, Stuart H. Taylor, Michael S. Spencer, Christopher J. Kiely, Gordon J. Kelly, Colin W. Park, Matthew J. Rosseinsky, Graham J. Hutchings
References: Nature (2016)
DOI: 10.1038/nature16935
Date: February 2016

Title: Oxidation of Carbon Nanotubes in an Ionizing Environment
Authors: Ai Leen Koh, Emily Gidcumb, Otto Zhou, and Robert Sinclair
References: Nano Lett. 16 (2), 856-863 (2016)
DOI: 10.1021/acs.nanolett.5b03035
Date: January 2016

Title: Influence on nickel particle size on the hydrodeoxygenation of phenol over Ni/SiO2
Authors: Peter M. Mortensen, Jan-Dierk Grunwaldt, Peter A. Jensen, Anker D. Jensen
References: Catalysis Today 259, 277-284 (2016)
DOI: 10.1016/j.cattod.2015.08.022
Date: January 2016

Title: In-situ transmission electron microscopy study of surface oxidation for Ni–10Cr and Ni–20Cr alloys
Authors: Langli Luo, Lianfeng Zou, Daniel K. Schreiber, Donald R. Baer, Stephen M. Bruemmer, Guangwen Zhou, Chong-Min Wang
References: Scripta Materialia 114, 129-132 (2016)
DOI: 10.1016/j.scriptamat.2015.11.031
Date: December 2015

Images

Videos

Professor Seiji Takeda (Osaka University, Japan) explains the value of the Thermo Scientific ETEM solution for quantitative in-situ microscopy in materials science research.

Publications