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Issue 21, 2004
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Control and characterisation of a single aerosol droplet in a single-beam gradient-force optical trap

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Abstract

Optical tweezers are used to control aerosol droplets, 4–14 μm in diameter, over time frames of hours at trapping powers of less than 10 mW. When coupled with cavity enhanced Raman scattering (CERS), the evolution of the size of a single droplet can be examined with nanometre accuracy. Trapping efficiencies for water and decane droplets are reported and the possible impact of droplet heating is discussed. We demonstrate that the unique combination of optical tweezing and CERS can enable the fundamental factors governing the coagulation of two liquid droplets to be studied.

Graphical abstract: Control and characterisation of a single aerosol droplet in a single-beam gradient-force optical trap

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Publication details

The article was received on 20 Sep 2004, accepted on 06 Oct 2004 and first published on 12 Oct 2004


Article type: Communication
DOI: 10.1039/B414459G
Citation: Phys. Chem. Chem. Phys., 2004,6, 4924-4927
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    Control and characterisation of a single aerosol droplet in a single-beam gradient-force optical trap

    R. J. Hopkins, L. Mitchem, A. D. Ward and J. P. Reid, Phys. Chem. Chem. Phys., 2004, 6, 4924
    DOI: 10.1039/B414459G

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