Nanoporous tent wetting fluorescence inconclusive

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: Sizing Data: No peaks were found in the nm range for any of the filtrates….

Since precision printing FITC KODE molecules into the windows of our 3 slot chips I have begun testing both the uniformity and the functionality of surface coatings of these molecules. In pursuit of coating uniformity I have tested several different methods of surface coating to determine which method provides the greatest uniformity. In this same…

So this is the latest iteration of the thumb-pump device we were working on this summer. As you will see in the diagrams, the idea is to ultimately have saliva go through a filtration step, with a side channel leading to a paper sink for excess/refuse pre-filtrate and a through channel. The latter channel leads…

This is a continuation of the silicon substrate bias series. I have added several more data points to highlight the trend. Below are the TEM micrographs, pore distributions, average diameter/porosity/density plots. It would appear that the “optimal” bias is at 05W if we are using porosity as a metric. I also performed a short temperature…

A couple of summers ago a Penn State summer student named Joe Fantuzo was working in the lab measuring cell growth rates and cell spreading on pnc-Si membranes and comparing the results to glass coverslips and tissue culture grade plastic. At least that is what we hired him to do. Joe spent much of that…

Here’s the paper we’re discussing this week: Wu(Moulin)JMS14 The authors motivate their work by claiming that ultrafiltration membranes can be used to keep “engineered nanomaterials” (ENM) out of our waters.  They use confocal laser scanning microscopy to locate the position of fluorescent CdTe quantum dots (QD) on/inside an Ultracel membrane.  (Made by Millipore using regenerated…