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Microplasma illumination enhancement of vertically aligned conducting ultrananocrystalline diamond nanorods
Kamatchi Jothiramalingam Sankaran1, Srinivasu Kunuku, Shiu-Cheng Lou
1Department of Materials Science and Engineering, National Tsing-Hua University, Hsinchu, Taiwan 300, Republic of China. nhtai@mx.nthu.edu.tw.
Abstract:
Vertically aligned conducting ultrananocrystalline diamond (UNCD) nanorods are fabricated using the reactive ion etching method incorporated with nanodiamond particles as mask. High electrical conductivity of 275 Ω·cm-1 is obtained for UNCD nanorods. The microplasma cavities using UNCD nanorods as cathode show enhanced plasma illumination characteristics of low threshold field of 0.21 V/μm with plasma current density of 7.06 mA/cm2 at an applied field of 0.35 V/μm. Such superior electrical properties of UNCD nanorods with high aspect ratio potentially make a significant impact on the diamond-based microplasma display technology.
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