DC Field | Value | Language |
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dc.contributor.author | Lee, Hyeonjeong | - |
dc.contributor.author | Han, Hyunsoo | - |
dc.contributor.author | Jeon, Sangmin | - |
dc.date.accessioned | 2021-06-12T02:51:22Z | - |
dc.date.available | 2021-06-12T02:51:22Z | - |
dc.date.created | 2021-02-03 | - |
dc.date.issued | 2020-11 | - |
dc.identifier.issn | 2379-3694 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/106659 | - |
dc.description.abstract | We have developed a virtual filter that quickly and efficiently captures and detects pathogenic bacteria in large amounts of water. The virtual filter comprised magnetic nanoparticle chains (MNCs) obtained by cross-linking alginate-coated magnetic nanoparticles (MNPs). When the MNC solution in a disposable plastic tube was exposed to an external magnetic field, the MNCs were aligned along the magnetic field lines, forming a filter similar to a whale's baleen filtering system. A Halbach ring that increased the magnetic field inside the ring was used as the source of an external magnetic field. The Halbach ring produced a more uniform and denser alignment of MNCs than any other ring array. To demonstrate the performance of the virtual filter comprising MNCs, Escherichia coli (E. coli) O157-spiked water was injected into the virtual filter comprising polyethyleneimine-coated MNCs, and the concentration of E. coli O157 captured by electrostatic interaction was determined using qPCR analysis. The bacterial capture efficiency using MNCs was 90% at a flow rate of 5 mL/min, and the detection limit after 10 min of preconcentration of bacteria was 10 cfu/mL, which is 100 times lower than that obtained using qPCR alone. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | ACS SENSORS | - |
dc.title | Baleen-Mimicking Virtual Filters for Rapid Detection of Pathogenic Bacteria in Water Using Magnetic Nanoparticle Chains and a Halbach Ring | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acssensors.0c01334 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | ACS SENSORS, v.5, no.11, pp.3432 - 3437 | - |
dc.identifier.wosid | 000595550100013 | - |
dc.citation.endPage | 3437 | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 3432 | - |
dc.citation.title | ACS SENSORS | - |
dc.citation.volume | 5 | - |
dc.contributor.affiliatedAuthor | Lee, Hyeonjeong | - |
dc.contributor.affiliatedAuthor | Jeon, Sangmin | - |
dc.identifier.scopusid | 2-s2.0-85095994575 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | Halbach ring | - |
dc.subject.keywordAuthor | magnetic nanoparticle chain | - |
dc.subject.keywordAuthor | virtual filter | - |
dc.subject.keywordAuthor | pathogenic bacteria | - |
dc.subject.keywordAuthor | PCR | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
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