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Carbon nanotubes wrapped with DNA detect contaminants in cells.(UNIVERSITY RESEARCH)
Advanced Materials & Processes, April, 2006
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Single-walled carbon nanotubes wrapped with DNA can be placed inside living cells and detect trace amounts of harmful contaminants via near-infrared light, report researchers at the University of Illinois at Urbana-Champaign. Their discovery may enable new types of optical sensors and biomarkers that exploit the unique properties of nanoparticles in living systems.
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To make their sensors, the researchers begin by wrapping a piece of double-stranded DNA around the surface of a single-walled carbon nanotube. The DNA starts out wrapping around the nanotube with a certain shape that ...
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