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Nanogenerators for environmental sensors
by
Rebecca Brodie, RSC
—
last modified
06-27-11 04:12 AM
Copyright 2011, RSC
Left: zinc oxide nanowires on a flexible substrate (top) with a gold film electrode (bottom); right: zinc oxide nanowires
A nanomaterial-based, self-powered sensor that detects mercury in water has been developed by teams from the US and Korea.
Most environmental sensors need to be wired to a power supply, which can be expensive in terms of parts and labour. There is also the potential for contamination from batteries. Solar energy is a more attractive, and greener, alternative, but it relies on weather conditions and time of day. More...
http://www.rsc.org/chemistryworld/News/2011/June/24061102.asp
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