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Portrait of Heiner Linke; Photo: Kennet Ruona

Heiner Linke

Professor, Deputy dean at Faculty of Engineering, LTH

Portrait of Heiner Linke; Photo: Kennet Ruona

Optical trapping of gold aerosols

Author

  • Regina Schmitt
  • Liselotte Jauffred
  • S. Mohammad-Reza Taheri
  • Heiner Linke
  • Lene B. Oddershed

Summary, in English

Aerosol trapping has proven challenging and was only recently demonstrated. 1 This was accomplished by utilizing an air chamber designed to have a minimum of turbulence and a laser beam with a minimum of aberration. Individual gold nano-particles with diameters between 80 nm and 200 nm were trapped in air using a 1064 nm laser. The positions visited by the trapped gold nano-particle were quantified using a quadrant photo diode placed in the back focal plane. The time traces were analyzed and the trapping stiffness characterizing gold aerosol trapping determined and compared to aerosol trapping of nanometer sized silica and polystyrene particles. Based on our analysis, we concluded that gold nano-particles trap more strongly in air than similarly sized polystyrene and silica particles. We found that, in a certain power range, the trapping strength of polystyrene particles is linearly decreasing with increasing laser power.

Department/s

  • Solid State Physics
  • NanoLund

Publishing year

2015

Language

English

Pages

95480-95480

Publication/Series

Proceedings of SPIE

Volume

9548

Document type

Conference paper

Publisher

SPIE

Topic

  • Atom and Molecular Physics and Optics
  • Nano Technology

Keywords

  • Aerosol
  • air
  • optical tweezers
  • gold nano-particles
  • polystyrene
  • nano-particles
  • power spectral analysis
  • laser manipulation
  • power
  • spectral analysis
  • aerotaxy

Conference name

Conference on Optical Trapping and Optical Micromanipulation XII

Conference date

2015-08-09 - 2015-08-12

Status

Published

ISBN/ISSN/Other

  • ISSN: 1996-756X
  • ISSN: 0277-786X