Layer Thickness Measurement for Precision and Reliability

Eddy-Current Based Layer Thickness Measurement for Precision and Reliability

Our advanced layer thickness measurement technology utilizes an eddy-current-based, non-contact approach to provide highly accurate, non-destructive measurements. Designed for delicate and conductive layers, our layer thickness measurement system ensures precise readings without compromising material integrity. This innovative eddy-current-based layer thickness measurement solution is ideal for applications requiring fast, reliable results in quality control and manufacturing. Experience the advantages of non-contact layer thickness measurement for enhanced precision and efficiency across a variety of materials and layers.

Understanding Sheet Resistance and Thickness Relationship

Sheet resistance is defined as the resistivity (ρ) of the material divided by its thickness (t):

Layer Thickness Meaturement

Rearranging this equation to solve for thickness:

Layer Thickness Meaturement

This relationship allows for the determination of the layer thickness if the resistivity of the conductive material and its sheet resistance are known.


Example
Calculation for a Copper Layer

Consider a thin copper layer with:

  • Resistivity of copper:
    Layer Thickness Meaturement
  • Measured sheet resistance:
    Layer Thickness Meaturement

Calculating the thickness t:

Layer Thickness Meaturement

Eddy-Current

Key Applications:

  • Thin-Film Technologies: Ideal for assessing thin-film materials after deposition processes like PVD, CVD, MBE and ALD.
  • Semiconductor Applications: Suitable for a wide range of semiconductor materials, like Si, GaN and SiC, supporting both research and production needs.
  • Solar and Photovoltaic Applications: Designed to measure and optimize materials used in solar cells and other photovoltaic technologies.
  • Innovative Glass Technologies: Applicable to architectural glass such as Low-E (low emissivity) glass and smart glass technologies.
  • Lighting and Display Technologies: Supports OLED and LED material testing and development.

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