Issue 21, 2004
From the journal:

Physical Chemistry Chemical Physics

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

Rebecca J. Hopkins,a   Laura Mitchem,a   Andrew D. Ward†a  and  Jonathan P. Reid*a  

* Corresponding authors

a School of Chemistry, University of Bristol, Bristol, UK

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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Article information

DOI
https://doi.org/10.1039/B414459G
Article type
Communication
Submitted
20 Sep 2004
Accepted
06 Oct 2004
First published
12 Oct 2004

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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