{"title":"基于低蚀刻电流密度介孔硅电子传感器的大肠杆菌高灵敏度检测技术","authors":"Husam R. Abed, Mehdi Q. Zayer, Alwan M. Alwan","doi":"10.1007/s13538-024-01546-3","DOIUrl":null,"url":null,"abstract":"<div><p><i>Escherichia coli</i> (<i>E. coli</i>) bacteria identification is important in many areas, such as environmental monitoring and medical diagnostics. Conventional techniques frequently lack specificity and sensitivity. This study investigates the fabrication and characterization of a high-sensitive <i>E. coli</i> bacteria sensor using mesoporous silicon prepared by an electrochemical etching process under different low current densities. This study explores a high-sensitive <i>E. coli</i> sensor grown in nutrient agar at 36.5 °C, deposited on the mesoporous silicon surface, with morphology analyzed using scanning electron microscopy (SEM) and current–voltage characteristics measured. The XRD analysis confirmed the peaks of silicon material with a polycrystalline nature. FTIR demonstrated Si–H bonds which approve the porosity process. Results indicated that silicon etched at 3 mA/cm<sup>2</sup> had small slit mesopores and large nanoparticles (73–102 nm) and at 9 mA/cm<sup>2</sup>, the smallest non-aggregated nanoparticles (54–83 nm) and largest pores (20 nm) were achieved. This study concludes that mesoporous silicon etched at 9 mA/cm<sup>2</sup> provides the best performance for <i>E. coli</i> detection, demonstrating its potential for high-quality biosensor applications.</p></div>","PeriodicalId":499,"journal":{"name":"Brazilian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"High-Sensitive Detection of E. coli Bacteria Based on Low-Etching Current Density Meso Porous Silicon Electrical Sensor\",\"authors\":\"Husam R. Abed, Mehdi Q. Zayer, Alwan M. Alwan\",\"doi\":\"10.1007/s13538-024-01546-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><i>Escherichia coli</i> (<i>E. coli</i>) bacteria identification is important in many areas, such as environmental monitoring and medical diagnostics. Conventional techniques frequently lack specificity and sensitivity. This study investigates the fabrication and characterization of a high-sensitive <i>E. coli</i> bacteria sensor using mesoporous silicon prepared by an electrochemical etching process under different low current densities. This study explores a high-sensitive <i>E. coli</i> sensor grown in nutrient agar at 36.5 °C, deposited on the mesoporous silicon surface, with morphology analyzed using scanning electron microscopy (SEM) and current–voltage characteristics measured. The XRD analysis confirmed the peaks of silicon material with a polycrystalline nature. FTIR demonstrated Si–H bonds which approve the porosity process. Results indicated that silicon etched at 3 mA/cm<sup>2</sup> had small slit mesopores and large nanoparticles (73–102 nm) and at 9 mA/cm<sup>2</sup>, the smallest non-aggregated nanoparticles (54–83 nm) and largest pores (20 nm) were achieved. This study concludes that mesoporous silicon etched at 9 mA/cm<sup>2</sup> provides the best performance for <i>E. coli</i> detection, demonstrating its potential for high-quality biosensor applications.</p></div>\",\"PeriodicalId\":499,\"journal\":{\"name\":\"Brazilian Journal of Physics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-07-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Brazilian Journal of Physics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s13538-024-01546-3\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Brazilian Journal of Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s13538-024-01546-3","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
High-Sensitive Detection of E. coli Bacteria Based on Low-Etching Current Density Meso Porous Silicon Electrical Sensor
Escherichia coli (E. coli) bacteria identification is important in many areas, such as environmental monitoring and medical diagnostics. Conventional techniques frequently lack specificity and sensitivity. This study investigates the fabrication and characterization of a high-sensitive E. coli bacteria sensor using mesoporous silicon prepared by an electrochemical etching process under different low current densities. This study explores a high-sensitive E. coli sensor grown in nutrient agar at 36.5 °C, deposited on the mesoporous silicon surface, with morphology analyzed using scanning electron microscopy (SEM) and current–voltage characteristics measured. The XRD analysis confirmed the peaks of silicon material with a polycrystalline nature. FTIR demonstrated Si–H bonds which approve the porosity process. Results indicated that silicon etched at 3 mA/cm2 had small slit mesopores and large nanoparticles (73–102 nm) and at 9 mA/cm2, the smallest non-aggregated nanoparticles (54–83 nm) and largest pores (20 nm) were achieved. This study concludes that mesoporous silicon etched at 9 mA/cm2 provides the best performance for E. coli detection, demonstrating its potential for high-quality biosensor applications.
期刊介绍:
The Brazilian Journal of Physics is a peer-reviewed international journal published by the Brazilian Physical Society (SBF). The journal publishes new and original research results from all areas of physics, obtained in Brazil and from anywhere else in the world. Contents include theoretical, practical and experimental papers as well as high-quality review papers. Submissions should follow the generally accepted structure for journal articles with basic elements: title, abstract, introduction, results, conclusions, and references.