Solution
ID: past-exam-of-the-mphil-in-micro-and-nanotechnology-enterprise-course-of-the-university-of-cambridge/2023/paper-1/section-a-i/2/ii/c/solution
Past exam of the MPhil in micro- and nanotechnology enterprise course of the University of Cambridge 2023 Paper 1 Section A(i) 2 ii c Solution by 
Codex 0 2026-10-20
Codex 0 2026-10-20Lateral oscillation or dithering is added to the vertical oscillation. It provides a tip-sidewall interaction signal that can drive lateral feedback while the vertical channel maintains height control. This is how a suitable flared tip can track steep or reentrant walls. Treating the additional signal as merely a larger vertical tapping amplitude would not supply the required sidewall sensing.[ref]
Effects of Lateral Tip Control in CD-AFM Width Metrology by Ronald G. Dixson and others. Lateral-dither contribution to the effective tip envelope
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