Manipulation and characterisation of accumulation and coarse mode aerosol particles using a Bessel beam trap

Helena Meresman, Jon B. Wills, Michael Summers, David McGloin, Jonathan P. Reid

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    Micron and sub-micron sized aerosol particles are captured, manipulated and characterised in a Bessel beam optical trap. Bright field microscopy and elastic light scattering measurements are used in combination to interrogate trapped particles and explore the optical landscape of the trap. We conclude that the Bessel trap has a number of advantages over optical tweezers in terms of characterisation of accumulation mode particles, manipulation of particles over macroscopic length scales and effective control of the gas phase. As such, the Bessel trap is a valuable addition to the aerosol optical toolkit.

    Original languageEnglish
    Pages (from-to)11333-11339
    Number of pages7
    JournalPhysical Chemistry Chemical Physics
    Issue number47
    Publication statusPublished - 2009

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