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The Mobility and Structure of Aerosol Agglomerates

Rogak, Steven N. and Flagan, Richard C. and Nguyen, Hung V. (1993) The Mobility and Structure of Aerosol Agglomerates. Aerosol Science and Technology, 18 (1). pp. 25-47. ISSN 0278-6826. doi:10.1080/02786829308959582.

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The relation between the aerosol agglomerate structure and transition regime mobility can be explained with a simple model incorporating fractal geometry and results from computer simulations. The model is consistent with previous measurements of the shape factors and allows some structural information to be inferred from these measurements, although the data are insufficient for a rigorous comparison between theory and experiment. Experiments conducted here with well-characterized TiO_2 and Si agglomerates support the model' assumption that the mobility diameter of a particle in the free-molecule regime is determined solely by the projected area of the particle. The correlation between the projected area and the mobility equivalent size remains remarkably good throughout the transition regime for the agglomerate particles studied here. The model predicts this result for particles with fractal dimensions of approximately D_f = 2

Item Type:Article
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Flagan, Richard C.0000-0001-5690-770X
Additional Information:© 1993 American Association for Aerosol Research. Received 5 May 1991; accepted July 10, 1992. This research was supported by the International Fine Particle Research Institute and by the U.S. Department of Energy under grant DE-FG22-90PC90286.
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International Fine Particle Research InstituteUNSPECIFIED
Department of Energy (DOE)DE-FG22-90PC90286
Issue or Number:1
Record Number:CaltechAUTHORS:20150805-112413439
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59231
Deposited By: Irina Meininger
Deposited On:09 Dec 2015 00:41
Last Modified:10 Nov 2021 22:17

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