Study on Template Pore Acting on the Fabricated Arrays of Nanomaterials

In this work, the features of template approach are discussed. Then the influences of density and sizes of their pores on the emission of fabricated arrays are theoretically studied. Especially, the emission from the arrays of carbon nanotubes or silicon nanowires was mainly discussed. Their tip electric field, electric field enhancement factor and optimum array density are wholly presented with analytic equations. The theoretical results showed that the field electron emission properties of carbon nanotube or silicon nanowire arrays are closely related to template pore density. When the pore density is near to the optimum array density, the fabricated arrays will have better electron emission and their field enhancement factor may be sharply improved. It was found the length and the radius of pores having different effect on the emission. It was certain that the pore radius played more effective role. A uniformly distributed model about templates and nanomaterial arrays was introduced, and applied into the concrete analysis of some carbon nanotube array samples with satisfactory results.