Femtoliter silver cups as surface enhanced Raman scattering active containers

Bhuvana, T ; Kulkarni, G. U. (2008) Femtoliter silver cups as surface enhanced Raman scattering active containers Nanotechnology, 20 (4). Article ID 045504. ISSN 0957-4484

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Official URL: http://iopscience.iop.org/article/10.1088/0957-448...

Related URL: http://dx.doi.org/10.1088/0957-4484/20/4/045504

Abstract

Femtoliter capacity Ag cups formed by the pulsed laser ablation of an Ag foil have been tried out as substrates for surface enhanced Raman scattering (SERS) measurements. The cups are formed as the impinging droplets from the laser plume undergo a flow pattern before freezing into cup-like structures, resulting in a surface roughness (∼35 nm) that makes them ideal for SERS studies. The internal volume of the cups is in the femtoliter (10−15 l) range, well suited for small-scale reactions, particularly in biological studies. The cups exhibit enhancement factors of the order of 106 with the analyte molecule thiophenol. Individual cups have been dosed attoliter quantities (10−18 l) of the analyte and detected.

Item Type:Article
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ID Code:103043
Deposited On:28 Feb 2017 16:48
Last Modified:28 Feb 2017 16:48

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