期刊
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
卷 126, 期 -, 页码 99-104出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jqsrt.2012.11.010
关键词
Levitated droplet; Mie scattering; Droplet radius measurement; Droplet weighting; Droplet charge
资金
- Polish Ministry of Science and Higher Education [N N202 126837]
- Ministry of Science and Higher Education/European Science Foundation (ESF/PESC EPSD program)
Two optical methods of droplet radius measurement were combined with droplet weighting. The applicability of such combination to droplets of liquids and liquid suspensions was investigated. The combination was successfully tested for a mixture of two glycols. It was checked that droplet radius evolution may be obtained with good accuracy by weighting. Since weighting is not a stand-alone method, it was calibrated in a small region with an optical method. Droplet electrical charge is the parameter obtained from the calibration. The application of the combination of methods to a droplet of suspension was demonstrated on droplets of suspensions of polystyrene nanospheres in diethylene glycol, evolving from moderate/high concentration to a nearly dry agglomerate particle. A detailed analysis of the results obtained from all the three methods may provide information on the changing density, effective refractive index, electric charge and the internal structure of the droplet. (C) 2012 Elsevier Ltd. All rights reserved.
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