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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Simulation of the contrast of collimated micro-sensing probes (note: (a,b) represent the contrast variation under the effect of working distance and angle alone, and (c,d) represent the contrast surface plots under the combined effect of the two factors).