Post by Professor Lake Shore on Jan 31, 2017 17:03:21 GMT -5
What is the purpose of the grid pattern on the sample holder?
The purpose of the grid pattern on the grounded, coaxial, and triaxial holder is to keep air from getting trapped under the sample, such as creation of an air pocket that can form under a layer of vacuum grease used to mount a sample to the sample holder. On a flat surface sample holder, this trapped air can cause a virtual leak, with the air leaking out over time to negatively affect the measurement.