Particle levitation and laboratory scattering

Jonathan P. Reid*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

22 Citations (Scopus)

Abstract

Measurements of light scattering from aerosol particles can provide a non-intrusive in situ method for characterising particle size distributions, composition, refractive index, phase and morphology. When coupled with techniques for isolating single particles, considerable information on the evolution of the properties of a single particle can be gained during changes in environmental conditions or chemical processing. Electrostatic, acoustic and optical techniques have been developed over many decades for capturing and levitating single particles. In this review, we will focus on studies of particles in the Mie size regime and consider the complimentarity of electrostatic and optical techniques for levitating particles and elastic and inelastic light scattering methods for characterising particles. In particular, we will review the specific advantages of establishing a single-beam gradient force optical trap (optical tweezers) for manipulating single particles or arrays of particles. Recent developments in characterising the nature of the optical trap, in applying elastic and inelastic light scattering measurements for characterising trapped particles, and in manipulating particles will be considered. (C) 2009 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1293-1306
Number of pages14
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume110
Issue number14-16
DOIs
Publication statusPublished - 2009
Event11th Conference on Electromagnetic and Light Scattering - Hatfield, United Kingdom
Duration: 7 Sep 200812 Sep 2008

Keywords

  • Light scattering
  • Raman spectroscopy
  • Aerosol
  • Optical tweezers
  • FORCE OPTICAL TRAP
  • COMPLEX REFRACTIVE-INDEX
  • AEROSOL DROPLETS
  • LIGHT-SCATTERING
  • RADIATION PRESSURE
  • RAMAN-SPECTROSCOPY
  • CAVITY RING
  • DIELECTRIC PARTICLES
  • RESONANCE SPECTROSCOPY
  • ELECTRODYNAMIC BALANCE

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