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  • Title: Low cost fabrication of diamond nano-tips on porous anodic alumina by hot filament chemical vapor deposition and the field emission effects.
    Author: Tsai HY, Liu HC, Chen JH, Yeh CC.
    Journal: Nanotechnology; 2011 Jun 10; 22(23):235301. PubMed ID: 21474868.
    Abstract:
    A novel growth method for diamond nano-tips on porous anodic alumina (PAA) by hot filament chemical vapor deposition has been investigated for the first time. Before diamond film deposition could be carried out, nano-diamond particles were deposited onto the pore surface of PAA by electrophoretic deposition at the nucleation sites. Diamond nano-tips were then successfully formed by the shape of porous alumina. The results show that a diamond nano-tip with a smaller radius has superior effects of field emission. Its threshold field and current density are 1.2 V µm(-1) and 4.0 mA cm(-2), respectively, for the case of a tip radius of about 20-30 nm.
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