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A flexible and physically transient electrochemical sensor for real-time wireless nitric oxide monitoring
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A flexible and physically transient electrochemical sensor for real-time wireless nitric oxide monitoring
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A flexible and physically transient electrochemical sensor for real-time wireless nitric oxide monitoring
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Journal Article
A flexible and physically transient electrochemical sensor for real-time wireless nitric oxide monitoring
2020
Overview
Real-time sensing of nitric oxide (NO) in physiological environments is critically important in monitoring neurotransmission, inflammatory responses, cardiovascular systems, etc. Conventional approaches for NO detection relying on indirect colorimetric measurement or built with rigid and permanent materials cannot provide continuous monitoring and/or require additional surgical retrieval of the implants, which comes with increased risks and hospital cost. Herein, we report a flexible, biologically degradable and wirelessly operated electrochemical sensor for real-time NO detection with a low detection limit (3.97 nmol), a wide sensing range (0.01–100 μM), and desirable anti-interference characteristics. The device successfully captures NO evolution in cultured cells and organs, with results comparable to those obtained from the standard Griess assay. Incorporated with a wireless circuit, the sensor platform achieves continuous sensing of NO levels in living mammals for several days. The work may provide essential diagnostic and therapeutic information for health assessment, treatment optimization and postsurgical monitoring.
Real-time continuous sensing of biological analytes is of importance in a range of biomedical applications. Here, the authors report on a flexible and physically transient sensor for the detection of nitric oxide and demonstrate applications in nitric oxide sensing in organs ex vivo and in vivo.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
