Journal
MEASUREMENT SCIENCE AND TECHNOLOGY
Volume 18, Issue 2, Pages 334-341Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-0233/18/2/S03
Keywords
sidewalls; nano- and micro-structures; line edge roughness; probe; micro-assembling; atomic force microscopy; micro coordinate measuring machine
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A method for direct and non-destructive sidewall scanning of nano- and micro-structures is presented. The measurements are performed with a kind of novel 'assembled cantilever probe (ACP)'. Such ACPs consist of four parts: substrate, cantilever, extension(s) and probe tip(s). The tip(s) located at the free end of the extension may extend horizontally. As a benefit, the ACPs are capable of probing in a direction perpendicular to sidewalls. The bending, torsion or deformation of the cantilever is detected when the tip is brought into contact, intermittent contact or non-contact, with sidewalls. Investigations show that the ACPs have a low measurement noise at a subnanometre level. Measurement examples performed at the sidewalls of microtrenches, microgears and line edge roughness samples are given in this paper.
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