Selvi, N. R. and John, Neena Susan and Mathur, Manikandan and Govindarajan , Rama and Kulkarni, G. U. (2006) A Facile Method of Producing Femtoliter Metal Cups by Pulsed Laser Ablation. Physical Chemistry B, 110 (46). pp. 22975-22978.
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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp065573y
Cuplike structures of Au, Ag, Cu, Zn, Nb, Cd, Al, In, and Sn in the size range of 300 nm to a few micrometers with an internal volume of a few femtoliters have been produced by the laser ablation of metal targets in a vacuum, by optimizing, in each case, the laser fluence and the substrate temperature. The metal droplets impinging on the substrate seem to undergo a hydraulic jump driven by the surface tension forces before solidifying into cups. The cups are robust and can be functionalized with biomarkers, filled with nanoparticle sols, oxidized to crucibles, or detached from the substrate without causing any deformation. We envisage their potential applications as femtoliter metal containers.
|Subjects:||Material Science > Nanofabrication processes and tools|
Material Science > Nanostructured materials
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Physics|
Faculty of Engineering, Science and Mathematics > School of Chemistry
|Deposited On:||03 Apr 2009 06:34|
|Last Modified:||09 Apr 2009 05:08|
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