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論文
【年度】104
年研發成果
【項目】
論文
【領域】
關鍵技術科專
【類別】
生醫材化
| 計畫名稱 | 醫療診斷X光立體影像感測器關鍵技術開發 | | 論文名稱 | The Fabrication of Sub-micron Size Cesium Iodide X-Ray Scintillator | | 論文類型 | 研討會論文 | | 發表處 | Proc. of SPIE Vol. 9485 | | 發表人 | Chien Wan Huna, Po Chun Chenb, Ker Jer Huangc, Chien Chon Chen | | 發表日期 | 2015/10/31 | | 國家 | 國外 | | 內容摘要 | The cesium iodide (CsI) scintillator can converts incident X-ray into visible light with very high conversion efficiency of optical photons. The incident energy, response time, film thickness, sample size, and spatial resolution require in engineering and medical applications are difference. A smooth and flat surface and single crystal structure of CsI enhance the X-ray to visible light conversion. However, the regular CsI is soft and extremely hygroscopic; it is very difficult to polish to obtain a smooth and optical flat plane. In order to obtain a good quality of CsI scintillator
for X-ray application we used an ordering channel as template and formed sub-micron CsI wire in the template. The fabrication process including: (1) Ordering structure of nano or sub-micron channels were made by an anodization method; (2) fill CsI scintillated film on the channel by CsI solution, (3) fill CsI melt into the channel formation
single crystal of sub-micron crystalline scintillator after solidification. The non-vacuum processes of anodization and
solidication methods were used for the sub-micron CsI scintillator column formation that is cost down the scintillator
fabrication. In addition, through the fabrication method, the ordering structure scintillator of scintillator can be made by anodic treatment and die casting technology with low cost and rapid production; moreover, the film oxidized
metal tubes of the tubular template can be further manufactured to nano tubes by adjusting electrolyte composition, electrolysis voltage, and processing time of anodic treatment, and the aperture size, the thickness and the vessel density of the nano tube can be controlled and ranged from 10 nm to 500 nm, 0.1 μm to 1000 μm, and hundred million to thousand billion tube/cm2, respectively. |
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