教師資料查詢 | 類別: 期刊論文 | 教師: 彭維鋒 Pong, Way-faung (瀏覽個人網頁)

標題:High-Temperature Annealing Effects on Multiwalled Carbon Nanotubes: Electronic Structure, Field Emission and Magnetic Behaviors
學年98
學期1
出版(發表)日期2009/12/01
作品名稱High-Temperature Annealing Effects on Multiwalled Carbon Nanotubes: Electronic Structure, Field Emission and Magnetic Behaviors
作品名稱(其他語言)
著者Ray, Sekhar Chandra; Pao, Chih-Wen; Tsai, Huang-Ming; Chen, Huang-Chin; Chen, Yu-Shin; Wu, Shang-Lun; Ling, Dah-Chin; Lin, I-Nan; Pong, Way-Faung; Gupta, Sanju; Giorcelli, Mauro; Bianco, Stefano; Musso, Simone; Tagliaferro, Alberto
單位淡江大學物理學系
出版者Valencia: American Scientific Publishers
著錄名稱、卷期、頁數Journal of Nanoscience and Nanotechnology 9(12), pp.6799-6805
摘要This work elucidates the effects of high-temperature annealing on the microscopic and electronic structure of multiwalled carbon nanotubes (MWCNTs) using high-resolution transmission electron microscopy, micro-Raman spectroscopy, X-ray diffraction, X-ray absorption near-edge structure (XANES) and valence-band photoemission spectroscopy (VBPES), respectively. The field emission and magnetization behaviors are also presented. The results of annealing are as follows: (1) MWCNTs tend to align in the form of small fringes along their length, promote graphitization and be stable in air, (2) XANES indicates an enhancement in oxygen content on the sample, implying that it can be adopted for sensing and storing oxygen gas, (3) the electron field emission current density (J) is enhanced and the turn-on electric field (ETOE) reduced, suggesting potential use in field emission displays and as electron sources in microwave tube amplifiers and (4) as-grown MWCNTs with embedded iron nanoparticles exhibits significantly higher coercivity ∼750 Oe than its bulk counterpart (Febulk ≈ 0.9 Oe), suggesting its potential use as low-dimensional high-density magnetic recording media.
關鍵字MWCNTs; Thermal annealing; Electronic Structure; Electron field Emission; Magnetization
語言英文
ISSN1533-4899
期刊性質國外
收錄於SCI
產學合作
通訊作者Ray, Sekhar Chandra
審稿制度
國別美國
公開徵稿
出版型式電子版
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