Patent ID: 9448155
Filing Date: 2016-09-20
CPC Classification: G01N

Claim Text:
1. A system for trapping particles in a gaseous environment comprising: a chamber; an intake for intake of a gas into the chamber containing at least one particle to be trapped and released, an outlet for exit of the gas out of the chamber containing at least one particle; a first passage operatively connected to the intake operating to create a flow of a gas containing at least one particle into the chamber; a second passage operatively connected to the outlet for flow of the gas containing at least one particle from the chamber; a third passage operatively connected to a gaseous flow for creating a flow of fluid in a direction substantially opposite to the transfer of gas from the first passage so as to counteract or balance the flow of gas from the first passage; an image sensor for recording an image of the at least one particle; a laser for generating a light beam for forming a photophoretic trap located between the first and third passages; whereby due to the balance of forces of gases from the first and third passages and the photophoretic trap, a particle is suspended for viewing by the image sensor.