Posted in | Electron Microscopy

Real-Time Imaging of Thermal Dynamics with In Situ TEM

DENSsolutions has introduced the Wildfire In Situ Heating Series that allows scientists to carry out thermal analyses in a stable and controlled setting within the TEM.

The Wildfire In Situ Heating Series can be used for a wide range of applications, allowing users to convert their high-end TEM from a static imaging tool to a multi-functional lab.

Wildfire Application Fields

  • Nanotechnology
  • LowD materials
  • Soft matter systems
  • Materials for energy applications
  • Materials engineering

Get More from the TEM: Three Reasons to Choose Wildfire

Analyzing materials while altering the temperature can widen the application areas of the traditional TEM, and also improve its already robust imaging capabilities. DENSsolutions’ Wildfire system can be used to heat from room temperature to 1300 °C with the ultimate sample stability and temperature control in all directions.

The system’s stability makes sure that the analytical performance and full resolution of each TEM are maintained, while the dynamics of a sample are observed at increased temperatures.

Reason 1: High-Impact Publications

Experiment: Thermal degradation of perovskite solar cell

Researchers from academia or industry aim to achieve the “game-changing” experimental results. At Cambridge University, the team working on energy-related materials utilized the Wildfire system to examine perovskite solar cells and their degradation processes at the time of heating. While these solar cells have turned out to be increasingly popular, their lifetime and stability at increased temperatures present a major challenge. Here, in situ TEM was utilized to figure out the variations in chemical composition and morphology. This provided a better understanding of the degradation evolution, culminating in the Nature Energy publication.

Perovskite Solar Cell

Heat-induced degradation of perovskite solar cells. G. Divitini, et al. University of Cambridge, Nature Energy 2016. DOI: 10.1038/nenergy.2015.12

Reason 2: Real-Time Dynamics

Behavior at the macroscale is considerably associated with the arrangement and transformation of atoms. In this case, DENSsolutions’ Wildfire system was used to heat the Ru nanoparticles supported on silica to 1300 °C.

The SiO2 sphere evaporates at that temperature, while the Ru nanoparticles become extremely mobile. The nanoparticle in question changes from a round shape to a square one. This change can be thoroughly examined, thanks to the technology used in DENSsolutions’ heating systems. The technology guarantees high sample stability and sub-Å resolution, thus allowing a better understanding of the processes involved.

Atomic resolution at 1300 °C

Courtesy of Gatan. Acquired with Wildfire D6 (now H+ DT) and Gatan OneView IS camera on a Thermo Fisher Scientific (FEI) Tecnai TF20.

Reason 3: High-Temperature EDS

Analyzing chemicals while heating is very crucial for interpreting the dynamics of temperature-induced changes. In addition, high-quality EDS analysis at increased temperatures is very difficult because strong infrared radiation is generated at the time of heating, which affects the X-ray spectral acquisition.

DENSsolutions offers both the experimental evidence and technology that in situ EDS at high temperatures is a robust and reliable method, and can be used across a wide range of temperatures. It was demonstrated for the first time that EDS analysis can be performed even at 1000 °C.

Acquired on a Wildfire S3. Maps courtesy of Bruker

Acquired on a Wildfire S3. Maps courtesy of Bruker


  • JEOL
  • FEI/Thermo Fisher Scientific

Real-Time Imaging of Thermal Dynamics with In Situ TEM

Wildfire Nanochip
Wildfire Sample Holder Tip
Wildfire Sample Holder
Wildfire System

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