Separation of Nanoparticles using surface acoustic radiation force: Surface acoustic waves (SAW) can be defined as mechanical waves which propagate on the surface of an elastic medium which most of its energy is concentrated in the surface. It’s been used in many different biological applications such as separation of cells, tumor cells, microvesicles, nano and…
Here is a graphical summary of the separation experiments performed the week of November 6th. Raw excel data is spread over 5 files: 11.4.14 qdot separations (10^13, 10^12, 10^11 Forward separations) 11.5.14 high conc reverse and forward (10^14 dots and IgG combination forward and reverse separations) 11.10.14 (retentate numbers for all separations) summarized qDot data (summary and graphs)…
Previously we have studied protein adsorption to pnc-Si membranes by TEM and fluorescence. Neither of these methods will work with polymer membranes. Polymer membranes are too thick to view using TEM. Polymer membranes also autofluoresce creating a lot of noise while using our fluorescence method. Here I outline a new method of studying adsorption to…
I attended the 2014 Gordon Research Conference (GRC) on Fuel Cells in August. For those of you not familiar with Gordon conferences, I will make a plug for them as a great venue for learning much detail and interacting closely with many of the major contributors in a specific field. GRC has a wide variety…
In an effort to better understand and check Karl’s model of sieving, I’ve built a significantly simpler version. The goal is to investigate the potential benefits of thinner membranes in dead-end filtration and separations. In my model 1 ml of water is displaced from the top bucket to an originally empty bottom bucket with a…
I sealed track etched membranes into the usual E-Cell setup. Here’s a chart with the calculated flow rates: I’m not sure why the 50nm sample was so much higher. Maybe there’s a difference in porosity? Also this is only the first try at this experiment. Here’s a chart with flow rates of all the experiments…