Abstract
Dust is everywhere. Sometimes it's harmless, but sometimes it needs to be removed. Especially in modern optical machinery, dust control can be of vital importance. In this research we look at dust on a surface. We focus on the behaviour under influence of a plasma.
The dust particles will stick to a surface due to the adhesive Van der Waals force. This force is hard to determine theoretically, as it highly depends on the local surface topology. Therefore, we have developed a method to experimentally measure this adhesive force. This method uses the inverse piezoelectric effect. We apply vibrations with increasing amplitude to the surface. This way we can observe which force is required for dust removal.
The required force is reduced when a plasma is applied over the surface. This may have different causes: the charging due to the plasma sheath may cause an additional force; the surface chemistry may change causing a lower adhesive force; the piezo vibrations may be influenced by the electrons. Current research is ongoing to find which of these effects causes the force reduction.
The dust particles will stick to a surface due to the adhesive Van der Waals force. This force is hard to determine theoretically, as it highly depends on the local surface topology. Therefore, we have developed a method to experimentally measure this adhesive force. This method uses the inverse piezoelectric effect. We apply vibrations with increasing amplitude to the surface. This way we can observe which force is required for dust removal.
The required force is reduced when a plasma is applied over the surface. This may have different causes: the charging due to the plasma sheath may cause an additional force; the surface chemistry may change causing a lower adhesive force; the piezo vibrations may be influenced by the electrons. Current research is ongoing to find which of these effects causes the force reduction.
| Original language | English |
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| Number of pages | 1 |
| Publication status | Published - 10 Mar 2015 |
| Event | 27th NNV Symposium on Plasma Physics and Radiation Technology - De Werelt, Lunteren, Netherlands Duration: 10 Mar 2015 → 11 Mar 2015 http://www.plasmalunteren.nl/sites/default/files/booklet_lunteren_2015.pdf |
Conference
| Conference | 27th NNV Symposium on Plasma Physics and Radiation Technology |
|---|---|
| Country | Netherlands |
| City | Lunteren |
| Period | 10/03/15 → 11/03/15 |
| Other | |
| Internet address |
Bibliographical note
Proceeding of the 27th Symposium Plasma Physics & Radiation Technology, 10-11 March 2015, Lunteren, the NetherlandsFingerprint Dive into the research topics of 'Plasma particle lofting : experimental investigation of dust removal force'. Together they form a unique fingerprint.
Cite this
Heijmans, L. C. J., & Nijdam, S. (2015). Plasma particle lofting : experimental investigation of dust removal force. Poster session presented at 27th NNV Symposium on Plasma Physics and Radiation Technology, Lunteren, Netherlands.