More Realistic Environments Lead to More Relevant Results - Atmopshere In Situ Environmental TEM system

Protochips Atmosphere Environmental system is the first commercial in situ environmental TEM system with an integrated mass spectrometer and flexible gas handling that allows you to safely observe previously unseen dynamics in the TEM at atomic resolution under the most realistic temperatures, pressures, and gaseous environments.

Major Application Areas:

  • Heterogeneous catalysis
  • Corrosion
  • Fuel cells & hydrogen storage

 

Overview of the Protochips Atmosphere Environmental System for TEM

Expedite data collection with an intuitive and efficient workflow that gets you the relevant, impactful results you need to accelerate your research.

Prepare Efficiently

Quickly and safely prepare a mini environmental “reactor” for your TEM, maximizing data collection time instead of wasting it on hardware assembly

  • Self-aligning parts enable rapid holder assembly
  • One single sealing gasket minimizes surface area where leaks could form
  • With only 5 steps, it’s quick to learn and easy to teach


                              Holder assembly

Intuitive holder assembly that can be completed in 5 steps with perfect alignment each time.

Create Without Limits

Prepare the most realistic experimental environments that generate more relevant results

  • Atmosphere enables you to introduce the most realistic gaseous environments because it is not limited by the calibrations of mass flow controllers. Gas handling is managed using Dalton’s Law of Partial Pressures and ultra-accurate pressure manometers, a method called Volumetric Blending, allowing any gas to be accurately mixed and flowed through the system.
  • Inert, metal-free heating element prevents unwanted side reactions while heating up to 1000°C
  • Introduce humidity, alcohols, and other volatile organic vapors in a precise and reproducible manner for the first time

Volumetric Blending is a robust technique that enables accurate mixing and flowing of a wide variety of gases independent of the mass of each constituent

Observe in Detail

Capture challenging details and analytical data with unique sample supports specifically designed for each TEM, STEM, and EDS mapping.

Onishi, Ichiro. et al. e-J Surf. Sci. Nanotech. 16 (2018) 286-288 JEOL Ltd.


Courtesy of University of Marburg - top image taken with a standard double tilt holder in vacuum, bottom image taken at 1 atmosphere of nitrogen, 220°C in the Atmosphere closed cell holder.

Vary Precisely

Truly understand each environmental condition’s impact on your sample by precisely adjusting each one of them independent of one another

  • A good experiment requires adjusting only one variable at a time, otherwise there is no way to know which effects are attributed to which experimental variables
  • For the first time, adjust the flow rate to increase residence time without affecting the experimental pressure
  • Unlike a homemade bubbler, you can precisely adjust relative humidity via software, creating a reproducible experiment and preventing condensation

Copper nanoparticles under a redox environment created within the Atmosphere system: 45% Ar, 5% H2O vapor, 50% H2 400 °C 1 atm

Measure Instantly

The integrated residual gas analyzer (RGA) mass spectrometer allows you to monitor your experiment in situ without compromising your imaging resolution

  • High resolution imaging during RGA operation is finally possible with the RGA’s unique, vibration-free integrated vacuum system
  • Rapid response time of < 3 seconds enables easy correlation between TEM images and RGA data
  • Sensitive detection limits down to 50 ppm resultant from low dead volumes


Low dead volumes and short gas lines enable sensitive detection limits down to 50 ppm

Clean Thoroughly

Efficiently and effectively remove air, water, and residual experimental gases for a clean, contamination-free starting environment without having to exchange parts

  • Thoroughly cleaning the holder without having to remove the holder tip or tubing ensures your pole piece stays safe and you can find your viewing window every time
  • In addition to purging, pump the system down to 30 mTorr while baking it out at 50°C to remove even the most difficult residual gases from the smallest areas of the system
  • Once removed, keep air and water out to prevent unwanted contamination with leak tight stainless-steel joints that are helium leak tested before delivery

Understanding in-situ Environmental TEM Research with the Atmosphere

Volumetric Blending is a robust technique that enables accurate mixing and flowing of a wide variety of gases independent of the mass of each constituent
Onishi, Ichiro. et al. e-J Surf. Sci. Nanotech. 16 (2018) 286-288 JEOL Ltd.
Courtesy of University of Marburg
Copper nanoparticles under a redox environment created within the Atmosphere system: 45% Ar, 5% H2O vapor, 50% H2 400°C 1atm
Low dead volumes and short gas lines enable sensitive detection limits down to 50 ppm

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