from Science @ NASA
Bacterial Integrated Circuits
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Indoor air pollution poses a real and harmful threat to heritage artefacts if left unchecked (see article by Morten Ryhl-Svendsen). The standard method of monitoring is to use the technique of sampling of the indoor air and having that sample analysed.

The new detection method being tested by NASA researchers would provide a real-time detection system, combining micro-biology and photo-electronics, called Bioluminescent Bioreporter Integrated Circuits (BBICs). Monitoring for pollutants would also be much cheaper and simpler than on-site chemical sampling methods that are currently possible.

These BBICs are useful on Earth, too. They can detect formaldehyde emitted by pressed wood furniture or hard-to-detect molds often implicated in sick building syndrome. "If this device works as planned, it could turn out to be a very inexpensive kind of monitoring system," says Sayler. "You could go to your corner drugstore, buy one of these, take it home and stick it up on your wall. It could tell you whether your carpets are degassing, or whether you've got problems like black mold."

The circuit chips can also be customised for the detection of different particulate, gaseous or biological pollutants - and even ultra-violet radiation! - depending on the type of microbe that is bio-engineered. The size of the chip is also extremely small and inconspicuous - 2 mm by 2mm - hence, perfect for museum display use.