effects of annealing
Post on 01-Jan-2016
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11
Effects of AnnealingEffects of Annealing
• SEM surface morphology SEM surface morphology of porous alumina of porous alumina substrates sputtered with substrates sputtered with 20 nm Ni. 20 nm Ni. – (a) As sputtered smooth (a) As sputtered smooth
surface before annealing. surface before annealing. – (b) After annealing at 500(b) After annealing at 500ooC C
under Hunder H22 for two hours. for two hours.
– The continuous nickel thin The continuous nickel thin film transformed to film transformed to uniformly distributed nano-uniformly distributed nano-sized particles. sized particles.
(a)
(b)
22
Effects of Annealing (cont.)Effects of Annealing (cont.)(c) (d)
(e)
(c), (d) CNTs grown without annealing(e) CNTs grown after annealing
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