Switch-on Phenomena and Field Emission from Multi-Walled Carbon Nanotubes Embedded in Glass

Switch-on Phenomena and Field Emission from Single-Walled Carbon Nanotubes Embedded in Glass

“…There are several materials used for field electron emission but the most promising one is carbon nanotubes (CNTs) (Forbes, 2012;Forbes et al, 2015). CNTs are composed of graphite sheets rolled into seamless hollow cylinders with diameter ranging from (1 nm) to about (50 nm) (Saito & Uemura, 2000), CNTs discovered by lijima (1991) and it have been attached much attention as electron source for many reasons such as ultra-small radius, high aspect ratio, high electrical conductivity (Zhang et al, 2005), high chemical stability and high mechanical strength (Bani Ali & Mousa, 2016), CNTs offer several advantages over other emitters material such as enhanced current stability, low threshold voltage, long lifetime (Hong et al, 2009) and high emission current density. These emission characterizations are directly related to the unique structure and chemical bonding of the CNTs (Cheng & Zhou, 2003).…”

Fractal Approach to Alternating Current Impedance Spectroscopy Studies of Carbon Nanotubes/Epoxy Polymer Composites

“…Since the documented discovery of carbon nanotubes (CNT), many researchers have sought to manufacture advanced composite CNT materials that exhibit one or more of their unique physical (mechanical, thermal, and electrical) properties (Ali & Mousa, 2016;Han & Fina, 2011;Sahoo et al, 2010). Polymer based composites have been considered the most suitable for further reinforcement with CNT (Cooper et al, 2002).…”