Vacuum to Control
Ensure that measurement progress would flow smoothly without much error
Vacuum pump is used to decrease pressure
Decreases the possibility of freezing
When the chamber is cooled to cryogenic levels, the moisture in the chamber can freeze and produce ice over the sample
With a vacuum, the moisture is removed, preventing freezing
Prevents breaking or cracking of the sample
If the sample is cooled to rapidly, one end of the sample would be cold while the other is relatively warm, causing one end to contract over the other. This would cause the sample to bend and snap
With a vacuum, there would be less gas particles, decreasing the convection and ensuring a slow temperature change
Helium gas is used as an exchange gas to provide heat exchange from the outside to the inside, ensuring that the chamber will cool down
Helium has a low freezing point, so it can work with cryogenic temperatures.
Conduct measurements while being customizable
Can be adjusted to measure specific characteristics
Opens up possibilities to conduct further measurements while still being customizable
Future compositions of materials can be analyzed upon and specific characteristics can be measured
With the results received from the tests, it is found that the cryostat device is accurate and relatively precise due to the same relationship found with semi-conductors. In the future, this device and methodology can be used to measure future materials and its various properties under different conditions, and all that is required is to change the sample. In the future, this could be used to discover new composite's properties.
In this work, Dylan determined to work on designing a measuring device for electronic measurement that is precise and accurate.
Design of Cryostats for Electronic Measurements