ArticleScience advances2026
Uncovering piezoelectric effect in polycrystalline diamond membranes.
Article in Science advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
12 authors.
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Abstract
Diamonds have been regarded as nonpiezoelectric materials for more than one century. Here, we uncover a notable piezoelectric effect in ultrathin and ultraflexible polycrystalline diamond membranes. Our experiments show that the piezoelectricity depends on membrane thickness, with peak response (exhibiting a piezoelectric voltage coefficient of ~82.2 millivolt meters per newton that surpasses many conventional piezoelectric materials) seen in ~5-micrometer-thick membranes. First-principles calculations reveal that the unexpected piezoelectricity in polycrystalline membranes originates from local asymmetry induced by grain boundaries, which alter the electric polarization within a finite region near the boundary during deformation. This finding together with the outstanding properties of our membranes is expected to catalyze the exploration and development of diamond-based applications in energy harvesting, intelligent sensing, and wearable electronics.
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Registered trials
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