title: Optical Trapping of Gold Nanoparticles in Air.
abstract: Most progress on optical nanoparticle control has been in liquids, while optical control in air has proven more challenging. By utilizing an air chamber designed to have a minimum of turbulence and a single laser beam with a minimum of aberration, we trapped individual 200 to 80 nm gold nanoparticles in air and quantified the corresponding trapping strengths. These results pave the way for construction of metallic nanostructures in air away from surfaces.
authors.affiliation: †Solid State Physics and Nanometer Structure Consortium (nmC@LU), Lund University, 22100 Lund, Sweden.
authors.forename: Liselotte
authors.initials: L
authors.lastname: Jauffred
authors.affiliation: ‡Physics Department, Institute for Advanced Studies in Basic Sciences (IASBS), 45195-1159 Zanjan, Iran.
authors.forename: S Mohammad-Reza
authors.initials: SM
authors.lastname: Taheri
authors.affiliation: †Solid State Physics and Nanometer Structure Consortium (nmC@LU), Lund University, 22100 Lund, Sweden.
authors.forename: Regina
authors.initials: R
authors.lastname: Schmitt
authors.affiliation: †Solid State Physics and Nanometer Structure Consortium (nmC@LU), Lund University, 22100 Lund, Sweden.
authors.forename: Heiner
authors.initials: H
authors.lastname: Linke
authors.affiliation: §The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark.
authors.forename: Lene B
authors.initials: LB
authors.lastname: Oddershede
keywords: Aerosol; aerotaxy; gold nanoparticles; laser manipulation; optical tweezers; power spectral analysis; silica nanoparticles