Not exactly related..but a nice read

For my work with Kyle and Vincent in Ottawa, I wanted to showcase more of the interesting configurations of DNA rather than simply passing the DNA through the nanomembrane. DNA Dual End Blockage and Clearage:   DNA Flossing:   DNA Stuck to nanofilter:   These are all fine to show the pore being blocked at…

Porous metal-organic framework (MOF) crystal is obtained by precipitation after mixing an aqueous solution of cadmium nitrate and the solution of 4,4’-bipyridine in anhydrous ethanol.  It is found that the crystallization occurred when ethanol evaporated from the mixture.  As a result, 4,4-bipyridine became supersaturated and complexed with Cd forming an infinite two-dimensional sheet as shown…

On Friday Josh and I assembled  Sepcon chips with calculated porosity of ~6.5 %, and avg. pore diameter of ~40 nm into Sepcons.   I was able to pass 40nm gold through the pores (we don’t have any gold larger than that).  Note the “Bad” retentate – for some reason one of the sepcons didn’t filter anything. On…

The graph below is air permeabilities for four samples from wafers 344,338,342,345 without and with 15 nm thick deposited oxide on the front side. All of this samples don’t have pinholes.Look at the data for samples 2 and 4 on the graph. The approximate porosities of these samples are 2.7 and 4.6% which is the…

Paper can be found here I am working on developing an analytical model to understand how to accurately post-process the resistance values I obtain from my TEER measurements. This paper addresses a similar issue and comes up with a correction factor to match the TEER values obtained in a microsystem with the ones obtained from a…

How to use the McGrath Lab Surface Contact Angle Goniometer (SCAG) to collect image data for the established uses. Please refer to the SCAG Setup Protocols for assembly instructions. Note that the details of established uses will be covered in a future post.   General Notes Instrument Layout (See Protocols for SCAG Setup for more part…