Patent ID: 9151724
Filing Date: 2015-10-06
Classification: G01N

Abstract:
1. A method of increasing a sensitivity of counting aerosol nanoparticles comprising: (a) changing a capacitance of a capacitor by impacting a gas comprising fluid coated nanoparticles to at least a portion of a dielectric space defined between a first perforated mesh electrode and a second insulated electrode covered with an unconductive dielectric layer of the capacitor being filled with water, wherein said impacting of said fluid coated nanoparticle in the dielectric space temporarily creates a crater defined by said fluid coated nanoparticle protruding into said dielectric space; (b) measuring the pulse capacitance in microsecond time scale when said fluid coated nanoparticles impact said dielectric space between said first electrode and said second electrode; and (c) determining a number of changes in pulse capacitance from said number of nanoparticles per volume unit of gas in microsecond time scale entering said dielectric space, wherein said changes of pulse capacitance indicates the number of nanoparticles in a microsecond time scale.