Publications


Title : Optical Trapping of a Growing Water Droplet in Air

Language: English
Type: Article
Authors: Nobuyuki Magome, Masahiro I. Kohira, Emi Hayata, Sadaatsu Mukai and Kenichi Yoshikawa
Journal: Journal of Physical Chemistry B
ISSN: 1520-6106
Volume: 107
Number: 16
Month: 4
Year: 2003
Actual year: 2003
Pages: 3988-3990
doi:   10.1021/jp034336h
Abstract: A water droplet, which was formed as a nucleation center from an aerosol of ammonium chloride, was trapped by a converged c.w. IR laser (lambda = 1064 nm) using a 100x objective lens, and the successive growth of the droplet was observed under supersaturated water vapor. The size of the droplet increased linearly with time and its maximum radius was 5.7 mum at a laser at 5 mW, indicating that the axial trapping efficiency Q was 0.46. This efficiency is much greater than those reported previously; for example, according to Ashkin and Dziedzic [Science 1975, 187, 1073], Q = 0.08 for a glycerol droplet of radius 6 mum at 40 mW (lambda = 514.5 nm).

"Optical Trapping of a Growing Water Droplet in Air"

Nobuyuki Magome, Masahiro I. Kohira, Emi Hayata, Sadaatsu Mukai and Kenichi Yoshikawa, Journal of Physical Chemistry B, 107, 3988-3990 (2003)