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Electrostatic dust detector

United States Patent

May 2, 2006
View the Complete Patent at the US Patent & Trademark Office
Princeton Plasma Physics Laboratory - Visit the Office of Technology Transfer Website
An apparatus for detecting dust in a variety of environments which can include radioactive and other hostile environments both in a vacuum and in a pressurized system. The apparatus consists of a grid coupled to a selected bias voltage. The signal generated when dust impacts and shorts out the grid is electrically filtered, and then analyzed by a signal analyzer which is then sent to a counter. For fine grids a correlation can be developed to relate the number of counts observed to the amount of dust which impacts the grid.
Skinner; Charles H. (Lawrenceville, NJ)
The United States of America as represented by the United States Department of Energy (Washington, DC), N/A (
10/ 787,220
February 27, 2004
The United States Government has rights in this invention pursuant to Contract No. DE-AC02-76CH03073 between the U.S. Department of Energy and Princeton University.