title: Switchable nanodumbbell probes for analyte detection.
abstract: Nanodumbbell gold nanoparticle (AuNP) dimers connected by DNA show significant change in interparticle distance in the presence of a specific analyte, ATP. The nanodumbbell begins in an extended state, but after the addition of the analyte, the DNA connecting the AuNPs forms a stable hairpin, which causes a large decrease in the interparticle distance.
authors.affiliation: Department of Nanoengineering and Materials Science Engineering Program, University of California, San Diego, La Jolla, CA 92093-0448, USA.
authors.forename: Phyllis F
authors.initials: PF
authors.lastname: Xu
authors.forename: Albert M
authors.initials: AM
authors.lastname: Hung
authors.forename: Hyunwoo
authors.initials: H
authors.lastname: Noh
authors.forename: Jennifer N
authors.initials: JN
authors.lastname: Cha