Surface Testing

w312 Number of Pores HistogramContributed Area Histogram 5nm BSA-Au is detected in the filtrate after 24 hours. 10nm BSA-Au is not. The 5nm registers around 10nm after conjugation and the 10nm is closer to 15nm. This selected membrane is not very porous, although it does have pores (as high as 42nm) that would appear to…

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…

Introduction Endothelial cell detachment under flow on porous substrates has been a concern in our sepsis research since I began my work in the lab, and some time before that as well. As we plan on moving to microfluidic models that incorporate larger pore substrates and physiological shear stresses for extended periods of time, it…

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…

Introduction Etaluma is a company that builds high resolution microscopes in a compact format for integration into cell culture incubators. This shifts from the traditional stage top or incubator cage approach to live cell imaging to allow for steady time-lapse imaging over extended periods of time without issues of focus or worries of temperature or…

Now that I am working on labeling my 5637 EVs, I have finally gotten around to getting a good labeled sample and a good negative control. The samples were prepared as follows: 5637 EVs were thawed from a frozen stock and 1 μL was diluted into 1 mL of labeling fluid. The labeling fluid contained…