Glow discharge in microfluidic chips for visible analog computing

Darwin R. Reyes; Moustafa M. Ghanem; George M. Whitesides; Andreas Manz

doi:10.1039/B200589A

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Lab on a Chip

Issue 2, 2002

Miniaturisation for chemistry, physics, biology, materials science and bioengineering

Impact Factor 5.67 24 Issues per Year Indexed in MEDLINE

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Glow discharge in microfluidic chips for visible analog computing

Darwin R. Reyes,^a Moustafa M. Ghanem,^b George M. Whitesides^c and Andreas Manz^a

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Department of Chemistry, Imperial College of Science, Technology and Medicine, London, UK
E-mail: a.manz@ic.ac.uk ;
Fax: 44-207-594-5833 ;
Tel: 44-207-594-5838

Department of Computing, Imperial College of Science, Technology and Medicine, Huxley Building, 180 Queen′s Gate, London, UK

Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, USA

Lab Chip, 2002,2, 113-116

DOI: 10.1039/B200589A
Received 17 Jan 2002, Accepted 11 Apr 2002
First published online 29 Apr 2002

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Abstract
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Here we present a novel visible analog computing approach for solving a wide class of shortest path problems. Using a microfluidic chip for computation, based on the lighting up of a glow discharge, the solution to maze search problems, the solution of a network shortest path and k-shortest paths problems and the practical application of finding the shortest paths between several landmarks from a street map are presented. The solution and visible display (in real time) for these problems shows only a small difference in practical problem solving time among problems with varying differences in size.

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