ArticleRSC advances2026
Degradation-as-ignal: a digital-twin framework for disposable optical glucose sensing with lead-free perovskite-inspired films.
Article in RSC 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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Abstract
Metal-halide perovskites are often regarded as unstable materials whose rapid breakdown under moisture and oxidative stress limits deployment. Here, we invert this paradigm and propose a degradation-driven sensing concept in which controlled chemical decomposition serves as the transduction mechanism for optical glucose detection. We develop a minimal, mechanistically informed, design-oriented digital-twin model for a lead-free halide perovskite-like thin film functionalised with glucose oxidase (GOx). Enzymatic oxidation of glucose produces hydrogen peroxide, which accelerates oxidative degradation of the sensing layer and yields a glucose-dependent loss of optical signal. The framework combines an analytic 0D constant-rate baseline with a GOx-driven transient rate model and a compact power-law optical readout, enabling efficient parameter sweeps over representative glucose ranges (70-300 mg dL
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