EO tests were continued using 2 micron carboxylated PS Latex beads in a 0.2 mM K2HPO4 solution containing 0.1% tween. The solution had a pH of 7.54 and a conductivity of 67.0 uS/cm. The beads were negatively charged, and so…
Category: NRG
Absorbance Problems with Colored Centrifuge Tubes
This is a follow up to Josh’s post, “Continued Au Separations with SiN-NP wafer #’s 1029 and 1030”, and seems to explain why we initially got an S value greater than one during our gold separations. We conducted tests to…
Posted in NRG
FLAG Separation Experiments with an Enzymatic Activity Assay
As I mentioned in my previous post, there are a lot of problems associated with the technique for testing the ability of a CytoVu assembly to act as an assay that I had been trying to use before. Several possible…
Posted in NRG
Hemodialysis in the rat animal model
I found some good descriptions of hemodialysis experiments using rats. They all use a method possibly first described by (Rockel et al., 1978). (Galons, Trouard, Gmitro, & Lien, 1996) at U of Arizona used nephrectomized male Spraque-Dawley rats (Holtzmann Co.,…
More in-situ heating videos
Here are some other in-situ heating videos I made recently. First one is NSN30730, which means the Si is 7nm and Si3N4 is 30nm. The speed of the video is 10 time faster than the real time. The first figure…
Posted in NRG
Burst Pressure III
This is a follow up to my previous post, “Burst Pressure Probability II”. I burst 111, 30nm thick single window pnc-SI TEM chips of ten different window sizes, to measure the burst pressure of chips with varying dimensions. Although area is a…
Posted in NRG
Hydraulic permeability of SiN-NP wafer #'s 1029 and 1030 with "clean" water
Sarah, Tejas, and I bought some “Invitrogen Ultrapure DI water” from the medical center to see if we would find a different permeability using the clean water vs the water from the Barnstead. Sarah and I repeated our permeability tests…
Posted in NRG
prediction of flow distribution within a membrane-based shear-free system
Hi all, Previously we described a two-compartment flow system integrated with a nanoporous membrane in between; and we showed that the nanporous membrane effectively reduces fluid flow from one compartment to the next. Seeing that today is our last NRG…
Posted in NRG
Karl’s Streaming Potential/EO Device
I’ve been working on building a streaming potential/EO device for a while now. This was Yaron’s prototype: Which itself was based on Jess’s design: I didn’t like that the device needed to twist together, and also that it was designed for…
Posted in NRG
Pores in SiO2 layer
Here is an interesting discovery of nanopores in the SiO2 layer after the laser annealing. Basically I was doing laser annealing on free-standing OS membrane the other day. It’s an excimer laser with 248nm wavelength, 25ns FWHM and spot size…
Posted in NRG
