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Molecular Beam Epitaxy

Control your process temperature while it evolves with non-contact infrared sensors.

Molecular beam epitaxy is a known process for producing thin-film depositions on single crystals. This process takes place in an ultra-high vacuum, which reduces carbon contamination in the reaction chamber and can result in a grown crystal with an extremely high purity.

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The molecular beam epitaxy reaction chamber, which consists of a heating source and rotating mechanism, is also comprised of effusion cells located at the bottom of the chamber. These cells contain different elements (in ultra-pure solid form) that are used in the thin film synthesis; however, these cells also require their own heating source to ensure the cell reaches the appropriate temperature.

Beams of molecules in the form of physical vapor are then fired at the product from the effusion cells. This is controlled by opening and closing a shutter mechanism that covers each effusion cell. Once the molecules are fired, they build up on the product to create a thin layer of film. Here, the product is rotated to achieve uniformity, which results in a complex single crystal growth.

Once the crystal growth has been properly coated, it is heated and held at static setpoint. Because the product is fixed, albeit rotating, an infrared sensor is a non-contact solution that can help ensure the final product has been heated appropriately.

Infrared Temperature Solutions
  • Ensure uniform temperatures across transformer bushings 24/7
  • Continuously monitor contact points, switches, and other critical assets where hot spot conditions may occur
  • Observe your equipment and analyze data in realtime with customizable areas of interest; independent, continuous, or intermittent evaluation; and more
Infrared Temperature Solutions
  • Dedicated spectral models P3 (3.43 µm) and P7 (7.9 µm) to provide accurate temperature measurements even for very thin plastics even for very low temperature (P3 down to 25° (77 (°F) and P7 10°C (50 °F))
  • Spectal ranges P3 and P7 in one product series cover most common plastic materials
Infrared Temperature Solutions
  • Simultaneous background temperature compensation and remote emissivity adjustment using an analog input or fieldbus communication
  • Field replacable window without recalibration with best in class 4 year warranty
  • Measurements down to 50°C (122°F) (with short wavelength Endurance 3M models

Get more information about Fluke Process Instruments solutions to this application