| Project/Area Number |
26670302
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Medical Physics and Radiological Technology
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| Research Institution | Kyoto College of Medical Science |
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Principal Investigator |
Hayashi Shigeki 京都医療科学大学, 医療科学部, 教授 (90395228)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 電界放射電子源 / 窒化物薄膜 / タングステン / 電子顕微鏡 / 電界計算シミュレーション / 窒化ホウ素化アルミニウム / 窒化ケイ素 / 電界放射 / 窒化ホウ素 / 窒化アルミニウム / 電界放射顕微鏡 / 透過型電子顕微鏡 / 電子線回折 / 窒化ホウ素(BN) |
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| Outline of Final Research Achievements |
In this study, a steep nanotip electron emitter was fabricated by using a field emission induced growth of multi-crystalline tungsten tip covered with insulator nitride thin film by supplying high-voltage. The nanotip was also ascertained to make single-crystalline structure, by using a transmission electron microscope (TEM) and to have electron diffraction pattern of <110> direction. This growth procedure must be related to the covered insulating thin film, in which tungsten tip would be electrically migrated and penetrated, and finally grown and single-crystallized. This growth technique of the nanotip electron emitter must be widely utilized to manufacture a high-brightness electron source. Furthermore, this must be applied to manufacture a micro X-ray tube with diameter of a few millimeter, especially for medical use like a fiber scope.
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