Flexible Hydrophobic Paper-Based Microfluidic Field-Effect Biosensor Amplified by RNA-Cleaving DNAzyme-Based DNA Nanostructure for Mg

镁离子是动物健康的关键指标，血镁浓度是低镁血症诊断的重要依据。现有比色、荧光和光谱方法操作复杂、设备昂贵且便携性差。本文报道一种柔性疏水纸基微流控场效应生物传感器，用于即时Mg2+检测。该器件以纤维素纸为基底，经十八烷基三氯硅烷(OTS)聚合修饰形成疏水微流控通道，提高机械强度并降低生物干扰；通道内集成半导体单壁碳纳米管(SWNTs...