title: A Three-Channel Spectrometer for Wide-Field Imaging of Anisotropic Plasmonic Nanoparticles.
abstract: A three-channel spectrometer (3CS) based on a commercial digital camera was developed to distinguish among tens of large (>100 nm), anisotropic plasmonic particles with various shapes, orientations, and compositions on a surface simultaneously. Using band pass filters and polarizers, the contrast of 3CS images could be enhanced to identify specific orientation and composition characteristics of gold and gold-silver nanopyramids and as well as the direction of the longest arm of gold nanostars.
authors.affiliation: Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113.
authors.forename: Christina M
authors.initials: CM
authors.lastname: Sweeney
authors.forename: Colleen L
authors.initials: CL
authors.lastname: Nehl
authors.forename: Warefta
authors.initials: W
authors.lastname: Hasan
authors.forename: Taiyang
authors.initials: T
authors.lastname: Liang
authors.forename: Amanda
authors.initials: A
authors.lastname: Eckermann
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Meade
authors.forename: Teri W
authors.initials: TW
authors.lastname: Odom