title: Large field enhancement at electrochemically grown quasi-1D Ni nanostructures with low-threshold cold-field electron emission.
abstract: Ni nanorod arrays have been vertically grown on a Ta-coated Si substrate via an electrodeposition process through the nanopores of a porous alumina membrane. Field emission studies of the samples are performed which show a considerable low-threshold field around 5 V µm(-1). The field emission mechanism followed Fowler-Nordheim tunneling due to large field enhancement at the emitter tips. Low-dimensional structures of the nanorod tips provided the large geometrical field enhancement and thus produce a high enough local or barrier field for low-threshold cold-field electron emission. The cost-effective synthesis of vertically aligned Ni nanorods on an Si substrate and low-threshold field emission properties can provide a potential alternative to conventional carbon-based field emitters for low power panel applications.
authors.affiliation: School of Mechanical Engineering, Yeungnam University, Gyeongsan, Korea. banerjee_arghya@hotmail.com
authors.forename: Arghya Narayan
authors.initials: AN
authors.lastname: Banerjee
authors.forename: Shizhi
authors.initials: S
authors.lastname: Qian
authors.forename: Sang W
authors.initials: SW
authors.lastname: Joo