Growth of silver nanoparticles by DC magnetron sputtering
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Author list: Asanithi P., Chaiyakun S., Limsuwan P.
Publisher: Hindawi
Publication year: 2012
Journal: Journal of Nanomaterials (1687-4110)
Volume number: 2012
ISSN: 1687-4110
eISSN: 1687-4129
Languages: English-Great Britain (EN-GB)
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Abstract
Silver (Ag) nanoparticles are of great interest for many applications. However, their fabrications have been limited by the synthesis methods in which size, shape, and aggregation are still difficult to control. Here, we reported on using direct current (DC) magnetron sputtering for growing Ag nanoparticles on unheated substrates. Effects of sputtering condition on grain size of Ag nanoparticle were discussed. At constant sputtering current and deposition time, the average sizes of Ag nanoparticles were 5.9 ฑ 1.8, 5.4 ฑ 1.3, and 3.8 ฑ 0.7nm for the target-substrate distances of 10, 15, and 20cm, respectively. The morphology evolution from nanoparticles to wormlike networks was also reported. High-resolution transmission electron microscopy image represented clear lattice fringes of Ag nanoparticles with a d-spacing of 0.203nm, corresponding to the (200) plane. The technique could be applied for growth of nanoparticles that were previously difficult to control over size and size uniformity. Copyright ฉ 2012 P. Asanithi et al.
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