Guiding DC glow discharge in microchannels |
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Authors: | Lim Joan Reyes Darwin R Manz Andreas |
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Affiliation: | Department of Chemistry, Imperial College of Science, Technology and Medicine, London, UKSW7 2AY. |
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Abstract: | This work describes the conditions, in terms of dimensions and geometry, to guide a dc glow discharge preferentially through a microchannel in simple networks. Two- and three-channel microfluidic structures were studied. A preference towards a wider channel, in a two-channel network, was observed when the difference in width was at least 18% and the length was at least 10 mm. In a three-channel structure, a change in glow discharge intensity was observed when the network was downscaled from a pathlength of 2 to 0.5 cm. While the intensity within the path with fewer turns decreased with a reduction in size, the intensity of the path with greater number of turns increased. |
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