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High-current pulsed arc synthesis of encapsulated silver nanoparticles: control of the relative size of the metallic nucleus

F. MAYA1,2,* , S. MUHL2, M. MIKI-YOSHIDA1

Affiliation

  1. Departamento de Microscopía Electrónica, Centro de Investigación en Materiales Avanzados, Miguel de Cervantes 120, Chihuahua, Chih., CP 3110, México
  2. Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, México D.F. 04510

Abstract

We report the dependence of the radius of the encapsulated nanoparticles, the inner metal nucleus and the thickness of the a-C encapsulant layer on the argon gas pressure and the diameter of the silver electrode in the high-current pulsed arc synthesis technique. The deposits were studied by XRD, TEM, SEM and EDX. The radius of the nanoparticles varied from ~55 to 9 nm as the Argon pressure was decreased from 106 to 13 kPa, at 66 kPa the radius of the nanoparticle and nucleus decreased from 34 to 11 nm and 19 to 9 nm, respectively, as the cross-sectional area of the silver electrode was increased from 0.13 to 1.13 x 10-6m 2 ..

Keywords

Arc evaporation, High current, Silver nanoparticles.

Submitted at: June 30, 2009
Accepted at: Feb. 27, 2010

Citation

F. MAYA, S. MUHL, M. MIKI-YOSHIDA, High-current pulsed arc synthesis of encapsulated silver nanoparticles: control of the relative size of the metallic nucleus, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 3, pp. 773-776 (2010)