New 'nanobead' approach could revolutionize sensor technology

Researchers have found a way to use magnetic "nanobeads" to help detect chemical and biological agents, with possible applications in everything from bioterrorism to medical diagnostics, environmental monitoring or even water and food safety. When fully developed as a hand-held, portable sensor, like something you might see in a science fiction movie, it will provide a whole diagnostic laboratory on a single chip. The research could revolutionize the size, speed and accuracy of chemical detection systems around the world.

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