Abstract
In this paper, we developed a micro Coulter counter chip that was able to measure a widerange of particle size distribution. Sample channel was divided into two channels, and each channel had a filter and a couple of electrode (aperture size of 50 ?m or 10 ?m) to be optimized for detection of a specific range of particles. By utilizing the novel micro Coulter counter chip, we could analyze a wide range of particle size distribution (0.8 to 15 ?m in diameter). We illustrated the details of the microchip and device structure. Copyright © 2005 by the Transducer Research Foundation, Inc.