Fluorescence spectroscopy and signalling from optically-tweezed aerosol droplets

Kerry J. Knox, Rachel Symes, Jonathan P. Reid*

*Corresponding author for this work

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

7 Citations (Scopus)


Spectroscopic signatures from fluorescing optically-tweezed aqueous droplets in air and polymer beads in solution are presented and compared. Rapid fluorescence signalling is reported for the aerosol droplets with a time resolution of 34 ms, achieved by dosing a trapped droplet with a fluorescent dye via coalescence with a flow of dye-doped aerosol. The quality factors of cavity-enhanced resonances present in the emission spectra are compared with those reported in a range of other studies. Rapid aerosol droplet heating is observed following coalescence for the case of high dye-loading. © 2010 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)165-170
Number of pages6
JournalChemical Physics Letters
Issue number4-6
Publication statusPublished - 5 Mar 2010


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