The Board of Trustees of the University of Illinoi
发明人:
PAPROTNY Igor,MAHDAVIPOUR Omid
申请号：
US201615564929
公开号：
US2018099283(A1)
申请日:
2016.04.08
申请国别(地区):
美国
年份:
2018
代理人:
摘要：
The present disclosure provides for a system and method of concentrating airborne particles, specifically toward the center of one or more intake channels of PM sensors. The invention provides a simple and cost effective device that, when used in conjunction with a MEMS PM sensor or the like, can increase the sensitivity of said device by orders of magnitude. An in-line MEMS PM concentrator uses a converging optical intensity field to concentrate particulate matter along the center of a longitudinal axis of a microchannel. More specifically, the concentrator is designed to bring in ambient air containing PM through a microchannel and concentrate the PM in the center of the microchannel using a converging optical intensity field within a confocal optical cavity.
