title: Nanotechnology. Color-changing nanoparticles offer a golden ruler for molecules.
abstract: At a meeting here last week, a chemist reported a way to use pairs of gold nanoparticles to track the binding and unbinding of DNA.
authors.forename: Robert F
authors.initials: RF
authors.lastname: Service
mesh_terms: D004247:DNA / Q000378:metabolism*; D031541:Fluorescence Resonance Energy Transfer; D006046:Gold; D008027:Light; D049329:Nanostructures; D045663:Quantum Dots; D012542:Scattering, Radiation
chemical_list: D006046:Gold; D004247:DNA