Preliminary Study of The Growth of Metallic Aerosols Under Reduced Pressure Environment
Public Deposited- Last Modified
- February 28, 2019
- Creator
-
Hsieh, Ming-Ta
- Affiliation: Gillings School of Global Public Health, Department of Environmental Sciences and Engineering
- Abstract
- The growth behavior of metallic aerosols under normal and reduced pressure environments was investigated. Particles grown at both environments exhibit very irregular profiles. Particles' growth, in general, can be categorized into three types in this study, they are: cluster-cluster aggregation, particle-cluster aggregation, and ballistic aggregation. A descriptor, called fractal dimension, is applied to quantifying the effect of reducing the pressure on the growth of particles. According to the measurements of fractal dimension, at higher pressure, 0.1 and 1.0 atm., cluster-cluster aggregation occurred at the early stage of growth; while particle-cluster aggregation occurred at the later stage of growth. Opposite phenomenon was found when pressure decreased to 0.01 atm.
- Date of publication
- May 1986
- DOI
- Resource type
- Rights statement
- In Copyright
- Advisor
- Reist, Parker C.
- Leith, David
- Shiffman, Morris A.
- Degree
- Master of Science in Environmental Engineering
- Academic concentration
- Industrial Hygiene
- Degree granting institution
- University of North Carolina at Chapel Hill
- Graduation year
- 1986
- Language
- Deposit record
- 4229e0fb-b010-4ede-aa50-9d4a2f0726fb
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