PARTICLE MEASUREMENT SYSTEM USING TIME-FREQUENCY TRANSFORM

摘要

A measurement system for and method of characterizing particles of a fluid sample, the system comprising: a microfluidic chip including a migration channel through which particles of a fluid sample are driven in a fluid medium; an illumination unit for illuminating at least a plurality of spaced sections in a detection region of the migration channel; an optical detector for detecting optical emission from at least the plurality of spaced sections in the detection region of the migration channel; an acquisition unit for generating a time−domain signal from the optical emission as detected; and a processing unit operably coupled to the acquisition unit for receiving the time−domain signal and transforming the time−domain signal to a frequency−domain signal, which frequency−domain signal provides for characterization of the particles.