High-Performance Cold Cathode X-ray Tubes Using a Carbon Nanotube Field Electron Emitter
DC Field | Value | Language |
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dc.contributor.author | Han, Jun Soo | - |
dc.contributor.author | Lee, Sang Heon | - |
dc.contributor.author | Go, Hanbin | - |
dc.contributor.author | Kim, Soo Jin | - |
dc.contributor.author | Noh, Jun Hong | - |
dc.contributor.author | Lee, Cheol Jin | - |
dc.date.accessioned | 2022-09-25T09:41:04Z | - |
dc.date.available | 2022-09-25T09:41:04Z | - |
dc.date.created | 2022-09-23 | - |
dc.date.issued | 2022 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/143992 | - |
dc.description.abstract | A cold cathode X-ray tube was fabricated using a carbon nanotube (CNT) field electron emitter made by a free-standing CNT film which is composed of a highly packed CNT network. A lot of CNT bundles with a sharp tip are vertically aligned at the edge of the thin CNT film with a length of 10 mm and a thickness of 7 mu m. The cold cathode X-ray tube using the CNT field emitter presents an extremely high tube current density of 152 A/cm(2) (corresponding to tube current of 106.4 mA), the electron beam transmittance of 95.2% and a small focal spot size (FSS) of 0.5 mm. In addition, the cold cathode X-ray tube also shows stable lifetime during 100 000 shots. High emission current density of the cold cathode X-ray tube is mainly attributed to a lot of electron emission sites at an edge of the CNT film. The small FSS is caused by an ensemble of the CNT field electron emitter made by a free-standing thin CNT film and the optimized curve-shape elliptical focusing lens. Based on obtained results, the cold cathode X-ray tube can be widely used for various X-ray applications such as medical diagnosis systems and security check systems in the future. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | EMISSION | - |
dc.subject | FABRICATION | - |
dc.subject | DESIGN | - |
dc.title | High-Performance Cold Cathode X-ray Tubes Using a Carbon Nanotube Field Electron Emitter | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Cheol Jin | - |
dc.identifier.doi | 10.1021/acsnano.2c02233 | - |
dc.identifier.scopusid | 2-s2.0-85135807289 | - |
dc.identifier.wosid | 000819925700001 | - |
dc.identifier.bibliographicCitation | ACS NANO, v.16, no.7, pp.10231 - 10241 | - |
dc.relation.isPartOf | ACS NANO | - |
dc.citation.title | ACS NANO | - |
dc.citation.volume | 16 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 10231 | - |
dc.citation.endPage | 10241 | - |
dc.type.rims | ART | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | EMISSION | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordAuthor | carbon nanotube | - |
dc.subject.keywordAuthor | field electron emitter | - |
dc.subject.keywordAuthor | cold cathode X-ray tube | - |
dc.subject.keywordAuthor | emission current | - |
dc.subject.keywordAuthor | emission current density | - |
dc.subject.keywordAuthor | emission stability | - |
dc.subject.keywordAuthor | focal spot size | - |
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