Permeability and burst pressures data for new wafers

As we make larger and larger pores, we see that they are becoming more convoluted and have stopped looking like circles or ellipse. In order to try describing these shapes, they were given a “roundness” number which was calculated by taking the minor axis and dividing it by the major axis. However this often fails…

Today I looked at a wafer (391) that had been annealed in the RTP on top of a 6″ wafer substrate. The idea is that the six inch substrate would create a “shadow” around the 4″ wafer which would improve thermal uniformity by blocking the multiple reflections from the lamps inside the chamber. Here is…

Last fall we decided to try to integrate a filter immediately upstream of Vincent Tabard-Cossa’s nanopore DNA sensors. The idea is to assemble back-to-back a NPN membrane a standard nitride membrane used in Vincent’s nanopore fabrication system an oxide spacer. Currently the lifetime of these sensors/sequencers is limited by clogging events. The purpose of our…

Since I am posting data that is acquired using Auger electron spectroscopy, I thought that it might be a good idea to write a post about the theory of the instrument, to better understand why this data is useful and relevant. The Auger effect is a phenomenon in which an atom that is excited by…

Hi all – I finished my 10 months internship with Sartorius on 16th of July and since all my results are going to be the third and last aim of my Ph. D., I will be presenting my results in our NRG meeting. Since these results are confidential, I am not allowed to publish them…

This gel shows the separation using two 100k Microcon membranes and 1mg/mL brain extract. 500uL of 1mg/mL brain extract was loaded into the Microcon and spun at 14000g for 5min. 400uL passed through the membrane (100ul remained on top). It appears that their “cutoff” as we would consider it is much lower, more like 50kD….