Capillary Tubing and Adapter

Below are results for air permeability tests I took on wafers w302, w304, w187, w189, w310. The X axis is the position of a sample on the wafer (from inside to outside).Samples form wafer 189 passed no air and the permeability of wafer 187 is extremely low.Permeability of other wafers increases closer to the outer…

In this post I will explain how I tried to use the 1D diffusion model to check the results we had in the Nature paper.  Unfortunately I didn’t get the same results in the simulation and I present some ideas for the discrepancy. In the Nature paper we made simple small volume diffusion chambers and…

After some experimentation with acetylene concentration and anneal temperature, I was able to find a carbonization recipe that appears to shrink our pores by 1/3 the original diameter.  Below are images of an untreated sample (TEM 148: 15 nm pnc-Si 1000 RTP) and a carbonized sample (see recipe at end of post). A closer look…

Testing was performed on 3D-printed transwell device prototypes for use as culture devices with SEPCON chip integration(Makerbot2 printed Transwells for SEPCON chips). The performed testing attempted to determine the quality of seal of interfaces between all device components. The two devices tested were identical in basket geometry, with the only differences being in printing material….

On Monday I presented our progress on the hemodialysis project for the Coulter Foundation. They seemed very pleased with our progress and impressed with our team. Its a tough crowd and for the first time, I sensed they had confidence in us. I’ve uploaded my presentation to the blog (PDF; ppt). Their primary points of…