This is the setup used for the long term clearance testing. The fraction collector can be set to advance to the next collection tube at set intervals from 1 min to 99 min. I am currently conducting an evaporation test…
Tag: characterization
Adsorption of F-BSA on PEGylated pnc-Si, PEGylated Glass, Glass
This study was run to test test the efficacy of PEGylation in blocking BSA adsorption. Three surface types were used, glass, PEGylated glass, and PEGylated pnc-SI. The glass was cleaned in Ethyl Alcohol, dried and UV treated, PEGylated glass was…
The Whitesides Chamber implemented in the McGrath Lab has now successfully generated a steady and linear gradient
Hi all, After nearly a month of troubleshooting the fabrication of Whitesides Chamber we finally have the capability to generate a steady and linear gradient of molecules. In the presented case, we have generated a gradient of rhodamine 6G (R6G),…
Posted in NRG Tagged with: characterization, closed flow system, diffusion, diffusion cell design, flow cell, henry, micropump, rhodamine diffusion
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, .…
BP Does Not Change with Membrane Orientation in Test Apparatus for W660
Given the low burst pressures of recently produced wafers Chris requested I burst pressure test some samples in two different orientations: well side facing away from the positive pressure source and well side facing towards the pressure source. The standard…
W648: Burst Pressure and the Return of Contamination?
We received W648 from the production team this week. Upon inspection of this wafer, is has a higher density of pinholes than we have been seeing lately (>3 pinholes/slit compared to 0 or 1/slit) and seems to show a return…
Pore Processing Comparison of W615
In order to support the idea that RTP treatment does not change membrane pore characteristics (as shown by Anant in the rhodamine diffusion study) I processed TEM samples that were not treated, RTPed in Ar, for 5 minutes at 800C,…
W613: Mechanical Testing
W613, the wafer with 30 nm thick pnc-Si that is oddly etched to form “H” shaped membranes, was tested for burst pressure and attempted to measure air permeability. When doing air permeability all samples broke, meaning are very weak. This…
W620: Mechanical Testing
The production crew recently delivered W620 to the lab, which was created to mimic W504 (and W612). W620 shows high burst pressure and has air permeability comparable to W504/612.
W612 Characterization
I tested W612 for air permeability and burst pressure, shown below. It should be noted that the air permeability and burst pressure values are comparable to W504; looks like a good reproduction! I also tested a sample with the hexane…
