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US 7,605,389 B1Granted
Particle detector with particle trapping device
AssigneeVerionix Incorporated
InventorChris Doughty
Life of this patent
Estimating the term…
Abstract
A particle detector includes an input port for receiving gas and particulate matter. A charging source generating positively and negatively charged species that charges at least some particulate matter in charging region, thereby generating a plurality of charged particles. A trapping region is formed having a potential energy minimum that attracts and confines the plurality of charged particles. A detector detects charged particles in the trapping region.
Claims33
A particle detector comprising:
- a. an input port for receiving gas and particulate matter;
- b. a charging source that is coupled to the input port, the charging source generating positively and negatively charged species that charges at least some particulate matter in a charging region, thereby generating a plurality of charged particles;
- c. a trapping region positioned in the charging region, the trapping region having a potential well that attracts and confines the plurality of charged particles;
- and
- d. a detector that detects charged particles in the trapping region.
2 more elements
A method of detecting particles, the method comprising:
- a. receiving gas phase matter containing particles;
- b. generating positively and negatively charged species in a charging region, the positively and negatively charged species generating a plurality of charged particles;
- c. creating a potential energy gradient and minimum in the charging region that attracts and confines the plurality of charged particles in a trapping region;
- and
- d. detecting the plurality of charged particles confined in the potential energy minimum.
2 more elements
A particle detector comprising:
- a. means for receiving gas phase matter containing particles;
- b. means for generating positively and negatively charged species in a charging region, the positively and negatively charged species generating a plurality of charged particles;
- c. means for creating a potential energy gradient and minimum in the charging region that attracts and confines the plurality of charged particles;
- and
- d. means for detecting the plurality of charged particles.
2 more elements
Dependencies are inferred from the claim text.