This was mentioned in the meeting today, and I’ll try to describe what’s going on here. We start out with a system with a smaller volume on the top of the membrane: If we start out with 10 mg/mL in…
Category: NRG
Stock Pile Experiment
This experiment is to determine if the time between the SC1 clean and when the wafers get deposited matter. Currently there is suspicion that an SC1 from an RCA clean should at RIT should be done right before deposition, .…
DNA Filtration at New NaCl Concentrations and New Salt Types (LiCl and CsCl)
I ran new experiments over the weekend in which I tested NaCl at 10, 25, 60, and 155mM. I also ran filtrations in the presence of 10mM LiCl and 10mM CsCl. These experiments were performed with chips from wafer #…
Posted in NRG
Particle Separations with Cellulose Membranes
I tried particle separations with the 30kD cellulose membranes from Millipore using the same setup as previous experiments. Basically the results are that neither 5 nor 20nm particles pass through the membranes whether in water or 10mM KCl. Absorbance Data:…
Posted in NRG
Discoloration – LiCl vs. CsCl vs. NaCl
A couple of weeks ago, I posted a discoloration array experiment that showed monotonic discoloration patterns here. This was a result that we’d been expecting for several months, but we never got it with NaCl and NaHCO3. Simplifying the solutions…
Posted in NRG
Membrane thickness series
A few weeks ago, we made wafers with three different silicon thicknesses: 15 nm, 30 nm, and 50 nm. The goal was to see how pore morphology changes with increasing thickness. The films were deposited at 450 C with a…
Posted in NRG
Imaging SI atoms at UR
Here’s a cropped image from a recent TEM pic that Brian McIntyre took of our material for SiMPore (15 nm thickness, not sure what wafer). This particular feature caught my eye because the crystal is perfectly aligned so we are…
Posted in NRG
Sepcon Macro Update
The older sepcon macro has been update to fix previous issues and yield more meaningful results. These updates are being brought up to get feedback from the group and from there implement them and make these changes to the newer…
Posted in NRG
Stabilizing Gold in Salts using Protein Adsorption
As mentioned previously, gold colloids are not stable in high salts because salts reduce the repulsive forces between particles and cause aggregation. I have been able to dissolve naked gold colloids in 10mM KCl without aggregation, but the particles crash…
Posted in NRG
Sodium fluorescein standard and transport
The last few Tecan posts have dealt with adjusting gain values to optimize fluorescent standard curves. We now have a general protocol here, and a final standard curve for fluorescein. Here is the background-reduced standard curve for sodium fluorescein (Na-F)…
Posted in NRG
