Invention Grant
- Patent Title: Systems and methods for individually trapping particles from air and measuring the optical spectra or other properties of individual trapped particles
- Patent Title (中): 从空气中单独捕获颗粒并测量各个捕获颗粒的光谱或其他性质的系统和方法
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Application No.: US13793556Application Date: 2013-03-11
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Publication No.: US09222874B2Publication Date: 2015-12-29
- Inventor: Steven C. Hill , Yongle Pan
- Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
- Applicant Address: US DC Washington
- Assignee: The United States of America as represented by the Secretary of the Army
- Current Assignee: The United States of America as represented by the Secretary of the Army
- Current Assignee Address: US DC Washington
- Agent Eric Brett Compton
- Main IPC: G01N21/01
- IPC: G01N21/01 ; G01N21/65 ; G01N15/14
Abstract:
Embodiments of the present invention are directed to systems and methods for continuously sampling particles from air. In one embodiment, a system for continuously sampling particles from air may include: an airflow system configured to continuously draw air including airborne particles into the system; a photophoretic trap that uses photophoretic forces of a laser beam to trap one or more of the airborne particles from the drawn air; a measurement device configured to measure one or more properties of the trapped one or more airborne particles; and a controller configured to repeatedly trap, measure and release one or more airborne particles.
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