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- W4386114020 abstract "In assessing piezoresistive microcantilever sensitivity for surface stress sensing, the key is its capacity to translate surface stress into changes in resistance. This change hinges on the interplay between stresses and piezoresistivity. Traditional optimization has been constrained by rudimentary 1D models, overlooking potentially superior designs. Addressing this, we employed topology optimization to optimize Si(100) microcantilevers with a p-type piezoresistor. This led to optimized designs with up to 30% enhanced sensitivity over conventional designs. A recurrent double-cantilever configuration emerged, which optimizes longitudinal stress and reduces transverse stress at the piezoresistor, resulting in enhanced sensitivity. We developed a simplified model to analyze stress distributions in these designs. By adjusting geometrical features in this model, we identified ideal parameter combinations for optimal stress distribution. Contrary to conventional designs favoring short cantilevers, our findings redefine efficient surface stress sensing, paving the way for innovative sensor designs beyond the conventional rectangular cantilevers." @default.
- W4386114020 created "2023-08-24" @default.
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- W4386114020 date "2023-08-21" @default.
- W4386114020 modified "2023-10-16" @default.
- W4386114020 title "Tailoring Stresses in Piezoresistive Microcantilevers for Enhanced Surface Stress Sensing: Insights from Topology Optimization" @default.
- W4386114020 doi "https://doi.org/10.48550/arxiv.2308.11143" @default.
- W4386114020 hasPublicationYear "2023" @default.
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