My past devices that utilize a membrane to separate particles have been haunted by mysterious pieces of junk. The other day I took a moment to inspect the holes that are punched using a sharpened 16ga needle in…
Author: Jascha Wilcox
Micropump Data Update
After a few more revisions of the micro pump, I performed a significantly more thorough characterization. Flow rate was determined as before using a horizontal capillary of known volume and a stop watch. A extremely small thermocouple…
Disposable PDMS diaphragm pumps
In order to include pumps on the prototype blood analyzer cartridges, it was necessary to implement a small pump using the existing knife-cut PDMS layer layup technique. The diaphragm architecture was selected due to ease of operation and minimal additional…
Posted in NRG
Low-cost plasma treatment
Oxygen plasma cleaners are a very commonly used tool when bonding PDMS sheets to materials such as PDMS, glass, Si, and SiN. Even though plasma cleaners have proven to be highly effective and reliable tools in this application, they continue…
Posted in NRG
Leukocyte Isolation (Pt. 1)
The goal of our work is a low-cost, portable device that will perform rapid and efficient leukocyte count assays required for treatment of HIV positive patients. The device in mind will benefit from the advantages associated with microfluidic systems such…
Posted in NRG
