Meaning
High-resolution analysis methods employ electron microscopy to inspect internal structures of semiconductor and composite materials. Precision evaluation through fe-sem micro-sectioning reveals sub-micron defects within multi-layer silicon substrates. This practice isolates voiding and delamination.
Technical laboratories execute these physical audits to verify production quality before bulk shipping.
Sample Preparation
Embedding the specimen in specialized epoxy resin secures fragile structures before mechanical grinding begins. Accurate execution of fe-sem micro-sectioning requires a flat, polished surface achieved through diamond-grit polishing or ion milling. Any sample deformation or surface scratching ruins the analysis.
Imaging Resolution
Cold field emission electron sources provide high resolution at low accelerating voltages, which avoids damaging delicate samples. This technology allows engineers to examine structural layers less than ten nanometers thick with outstanding clarity. Microscopic imaging reveals the crystal structure of the copper interconnects and the thickness of the dielectric barriers.
The resulting scans are analyzed by software to detect structural anomalies in the printed circuit board.
Failure Diagnosis
Root-cause analysis of product returns relies heavily on physical evidence obtained from sliced cross-sections. When electronic components fail in the field, technicians use the extracted slice to determine if the issue occurred during wave soldering. This investigation identifies board-level solder cracks and thermal stress points.
Having this physical proof allows manufacturers to adjust their thermal profiles.
