Microfabrication of gold wires for atom guides

Kukharenka, Elena, Moktadir, Zak, Kraft, Michael, Abdelsalam, M.E., Bagnall, Darren, Vale, C., Jones, M.P.A. and Hinds, E.A. (2004) Microfabrication of gold wires for atom guides Sensors and Actuator, A, 115, pp. 600-6007. (doi:10.1016/j.sna.2004.03.069).


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Miniaturised atom optics is a new field allowing the control of cold atoms in microscopic magnetic traps and waveguides. Using microstructures (hereafter referred to as atom chips), the control of cold atoms on the micrometer scale becomes possible. Applications range from integrated atom interferometers to the realisation of quantum gates. The implementation of such structures requires high magnetic field gradients.
The motivation of this work was to develop a suitable fabrication process for micromachined high-density current-carrying wires for atom guides. However, the developed process may be used for a variety of applications such as on-chip inductors and microtransformers. In order to realise the micromachined wires for atom guides different designs and fabrication processes were investigated. We discuss the feasibility and the suitability of the fabrication process based on gold sputtering technique to realise such devices. As an alternative we have considered a lower cost technique based on gold electroplating. For the electroplating we used commercial full bright cyanide free gold plating solution (gold sulphite, mild alkaline solution with pH = 9 Gold ECF 60, brightener E3) containing 10 g/dm3 gold from Metalor.
Some analytical and measurement results of magnetic atom traps are also presented in this paper.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/j.sna.2004.03.069
Organisations: Nanoelectronics and Nanotechnology, EEE
ePrint ID: 259870
Date :
Date Event
September 2004Published
Date Deposited: 27 Oct 2004
Last Modified: 17 Apr 2017 22:23
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/259870

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