At the nanoscale, what appears smooth can reveal a far more complex landscape. Subtle variations in surface topography can influence process performance, yield and the behaviour of increasingly advanced semiconductor structures, making precise surface characterisation more critical than ever.

This paper explores how higher-resolution measurement can reveal information conventional techniques may miss, helping manufacturers build a clearer understanding of the surfaces they are creating and controlling. By seeing beyond the apparent surface, metrology becomes a more powerful tool for process insight, optimisation and next-generation manufacturing.