Patent ID: 11944967
Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A method for separating sub-micrometer sized bioparticles, the method comprising:
depositing a fluidic sample in a microfluidic channel, wherein a plurality of micro-posts are disposed within the microfluidic channel; and
applying an electric field gradient to the fluidic sample to induce transport of sub-micrometer sized bioparticles in the fluidic sample by
applying a first electrical field waveform to the fluidic sample in the microfluidic channel,
applying a second electrical field waveform superimposed on the first electrical field waveform during a first portion of a period of the first electrical field waveform, wherein a frequency of the second electrical field waveform is higher than a frequency of the first electrical field waveform, and
removing the second electrical field waveform during a second portion of the period of the first electrical field waveform, wherein periodically applying and removing the superimposed second electrical field waveform separates the sub-micrometer sized bioparticles by size.