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A self-powered biosensor based on triboelectric nanogenerator for dual-specificity bacterial detection

InfoMat 2024年第3期6卷 117-130页

作者： Wei Lu Xiaoqiang Wang Congyu Wang Ke Gong Jiawei Li Xue Li Peng Wang State Key Laboratory of Heavy Oil Processing College of Chemistry and Chemical EngineeringChina University of Petroleum(East China)Qingdaothe People's Republic of China Institute of Oceanology Chinese Academy of SciencesQingdaothe People's Republic of China School of Material Science and Engineering China University of Petroleum(East China)Qingdaothe People's Republic of China State Key Laboratory of Microbial Technology Shandong UniversityQingdaothe People's Republic of China Guangxi Academy of Sciences Nanningthe People's Republic of China

Pathogenic and corrosive bacteria pose a significant risk to human health or economic *** specific,sensitive,and on-site detection of these bacteria is thus of paramount significance but remains *** inspiration from immunoassays with primary and secondary antibodies,we describe here a rational design of microbial sensor(MS)under a dualspecificity recognition strategy using Pseudomonas aeruginosa(***)as the detection *** the MS,engineered aptamers are served as the primary recognition element,while polydopamine-N-acetyl-D-galactosamine(PDA-Gal NAc)nanoparticles are employed as the secondary recognition element,which will also generate and amplify changes in the output voltage sig*** achieve self-powering capability,the MS is constructed based on a triboelectric nanogenerator(TENG)with the specific aptamers immobilized on the TENG electrode *** as-prepared MS-TENG system exhibits good stability in output performance under external forces,and high specificity toward ***,with no cross-reactivity observed.A linear relationship(R^(2)=0.995)between the output voltage and *** concentration is established,with a limit of detection estimated at around 8.7×10^(3) CFU mL^(-1).The utilization of PDA-Gal NAc nanoparticles is found to play an important role in enhancing the specific and reliability of detection,and the underlying mechanisms are further clarified by computational *** addition,the MS-TENG integrates a wireless communication module,enabling real-time monitoring of bacterial concentration on mobile *** work introduces a pioneering approach to designing self-powered smart microbial sensors with high specificity,using a double recognition strategy applicable to various bacteria beyond ***.

关键词： bacterial detection high specificity microbial sensor triboelectric nanogenerator wireless transmission

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