Deep Learning‐Powered Perovskite Paper Sensors for Ultrasensitive on‐Site Mercury Detection
Source abstract
Abstract
Abstract Rapid, instrument‐free detection of mercury ions (Hg 2+ ) is critical for addressing environmental emergencies, yet current methods face limitations in poor portability and sensitivity. Herein, a deep learning‐optimized paper‐based kit that incorporates controllable turn‐off fluorescence of metal halide perovskite for instrument‐free time‐critical Hg 2+ detection by the dynamic quenching mechanism and ensures visual discernment at 2 ppb, achieving a 1000‐fold sensitivity improvement over commercial strips is presented. Furthermore, a smartphone app powered by the deep learning model (MobileViT) further optimizes sensitivity, achieving ultrasensitive quantification (0.11 ppb limit of detection) across a 0.2–200 ppb linear range (R 2 = 0.987) with 98% overall accuracy, and the whole detection is completed only within 5 min. This approach of instrument‐free time‐critical Hg 2+ detection anticipates a new paradigm for rapid and on‐site Hg 2+ monitoring in environmental and industrial settings.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Molecular Sensors and Ion Detection · Mercury impact and mitigation studies · Luminescence and Fluorescent Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Affiliated Qingyuan Hospital Guangzhou Medical University Qingyuan 511518 China
School of Biomedical Engineering Guangzhou Medical University Guangzhou Guangdong 511436 China
Institute of Light+X Science and Technology Faculty of Electrical Engineering and Computer Science Ningbo University Ningbo 315211 China
Department of Neurosurgery Institute of Neuroscience Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China The Second Affiliated Hospital of Guangzhou Medical University Guangzhou 510260 China
School of Chemistry Sun Yat‐Sen University Guangzhou 510275 China
School of Physics and Optoelectronics South China University of Technology Guangzhou 510641 China
NBU Health Science Center Ningbo University Ningbo Zhejiang 315211 China
Funding
National Natural Science Foundation of China
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