USA As Represented by Secretary of the Navy

Russell Chung

Robert Andrew McGill

Viet K Nguyen

Eric J Houser

Jennifer L Stepnowski

Stanley Vincent Stepnowski

Stephen C Francesconi

Ronald L Kelly

An apparatus for collecting particles or vapor from air or surfaces comprising: a housing comprising an inlet open to the air to be sampled and an outlet; and a fan having one or more open areas within the housing capable of being driven at a speed effective to cause collection on the surface of the fan of particles or vapor in the air. A method of collecting a particulate sample from air comprising the step of driving a fan having one or more open areas within a housing comprising an inlet open to the air to be sampled and an outlet, at a speed effective to cause collection on the surface of the fan of particles in the air.

Miniature particle and vapor collector

Apparatus and method for detecting presence of an analyte in ambient air. The apparatus comprising a valve for admitting ambient air, a line for conveying the air to a sensing element, a housing for isolating the environment around the sensing element, an inlet port for flowing the air tho the sensing element in a turbulent flow in a direction substantially perpendicularly to the sensing element, an outlet port for conveying the air from the sensing element, and a pump in communication with the outlet port for providing suction for drawing the air to the sensing element. The method includes the steps of drawing in ambient air that may contain an analyte, projecting the air at a sensing element in a turbulent flow by flowing the air at the sensing element, the sensing element having on its surface a chemoselective material that selectively interacts with the analyte, and detecting the interaction of the analyte with the sensing element.

Device and method for pneumatic gas sampling for gas sensors

Method and apparatus for energy efficient tacking of resonant devices

Growing community of inventors

Springfield, VA, United States of America

Russell Chung