Measurements of the surface microroughness with the scanning electron microscope

Area of Science:

• Materials Science
• Surface Science
• Microscopy

Background:

• Quantitative surface topography analysis is crucial for material characterization.
• Existing methods may have limitations in speed, material compatibility, or accuracy.

Purpose of the Study:

• To develop and validate a novel 3D reconstruction system for scanning electron microscopy.
• To enable quantitative analysis of surface topography, microroughness, and waviness.

Main Methods:

• Development of a system integrating a quadruple scintillator detector, four-channel frame-grabber, and PC-based processing.
• Utilizing the angular distribution of secondary electron emission for topography contrast.
• Implementation of software algorithms for reconstruction and error compensation.

Main Results:

• Successful 3D surface reconstruction with quantitative topography and profile data.
• Accurate calculation of microroughness and waviness statistical parameters.
• Validation on metal roughness standards and etched silicon surfaces.

Conclusions:

• The developed system offers near real-time, reliable, and composition-independent 3D surface reconstruction.
• This advancement is applicable to a broad range of materials.
• The system provides valuable quantitative surface metrology data.