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| Titel: |
Suppression of Particle Deposition to Surfaces by the Thermophoretic Force |
| Auteur: |
Stratmann, F. Fissan, H. Papperger, A. Friedlander, S. |
| Verschenen in: |
Aerosol science and technology |
| Paginering: | Jaargang 9 (1988) nr. 2 pagina's 115-121 |
| Jaar: |
1988 |
| Inhoud: |
Product contamination by particles is of major concern in the electronics industry. It has become increasingly important because of the decreasing size of the product elements. In a study of the feasibility of using the thermophoretic effect to reduce particle contamination of surfaces, a simple asymptotic formula has been derived for the thickness of the dust-free space in the boundary layer over a flat plate with a flow normal to the surface. This simple formula compares well with the results of a numerical solution. For a temperature difference between the surface and the surrounding gas of 10-30° K and face velocities between 0.3 and 1.0 m/s, the thickness of the dust-free space is between 0.1 and 0.4 mm, much larger than the particle size (0.1 μm ≥ Dp < 0.5 μm). The results indicate that, under conditions representative of clean-room applications, thermophoresis can be effective in protecting surfaces against particle deposition. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 6 van 7 gevonden artikelen
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