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Trapping DNA Molecules
When DNA molecules suspended in a tiny stream of water flow through a nanoscale channel, they can be captured by a field of light, if that light is confined in a device called a slot waveguide. The pressure from the light can then propel the DNA along the waveguide channel to bring the molecules to new locations. Such manipulation could prove valuable for assembling nanoscale structures, driving powerful sensors and developing a range of other technologies.
This image accompanied NSF press release, "Nano 'Tractor Beam' Traps DNA."
Credit: Nicolle Rager Fuller, National Science Foundation
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