Combining weighting and scatterometry: Application to a levitated droplet of suspension

2013 ◽  
Vol 126 ◽  
pp. 99-104 ◽  
Author(s):  
D. Jakubczyk ◽  
G. Derkachov ◽  
M. Kolwas ◽  
K. Kolwas
Keyword(s):  
Levitated Droplet

scholarly journals Effect of Temperature Change on Interfacial Behavior of an Acoustically Levitated Droplet

2009 ◽  
Vol 22 (2) ◽  
pp. 145-150 ◽  
Author(s):  
Masanori Kawakami ◽  
Yutaka Abe ◽  
Akiko Kaneko ◽  
Yuji Yamamoto ◽  
Koji Hasegawa
Keyword(s):  
Temperature Change ◽  
Effect Of Temperature ◽  
Interfacial Behavior ◽  
Levitated Droplet

Comparison of surface tension measurements using the levitated droplet method

1986 ◽  
Vol 17 (1) ◽  
pp. 159-162 ◽  
Author(s):  
B. J. Keene ◽  
K. C. Mills ◽  
A. Kasama ◽  
A. McLean ◽  
W. A. Miller
Keyword(s):  
Surface Tension ◽  
Levitated Droplet ◽  
Droplet Method

scholarly journals Experimental quantification of contact freezing in an electrodynamic balance

2013 ◽  
Vol 6 (9) ◽  
pp. 2373-2382 ◽  
Author(s):  
N. Hoffmann ◽  
A. Kiselev ◽  
D. Rzesanke ◽  
D. Duft ◽  
T. Leisner
Keyword(s):  
Average Rate ◽  
Aerosol Particles ◽  
Dipole Interaction ◽  
Ice Nucleation ◽  
Particle Collision ◽  
Charged Droplet ◽  
Particle Collisions ◽  
Ice Nuclei ◽  
Induced Dipole ◽  
Levitated Droplet

Abstract. Heterogeneous nucleation of ice in a supercooled water droplet induced by external contact with a dry aerosol particle has long been known to be more effective than freezing induced by the same nucleus immersed in the droplet. However, the experimental quantification of contact freezing is challenging. Here we report an experimental method to determine the temperature-dependent ice nucleation probability of size-selected aerosol particles. The method is based on the suspension of supercooled charged water droplets in a laminar flow of air containing aerosol particles as contact freezing nuclei. The rate of droplet–particle collisions is calculated numerically with account for Coulomb attraction, drag force and induced dipole interaction between charged droplet and aerosol particles. The calculation is verified by direct counting of aerosol particles collected by a levitated droplet. By repeating the experiment on individual droplets for a sufficient number of times, we are able to reproduce the statistical freezing behavior of a large ensemble of supercooled droplets and measure the average rate of freezing events. The freezing rate is equal to the product of the droplet–particle collision rate and the probability of freezing on a single contact, the latter being a function of temperature, size and composition of the contact ice nuclei. Based on these observations, we show that for the types of particles investigated so far, contact freezing is the dominating freezing mechanism on the timescale of our experiment.

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