Ultrathin ~10nm npMgF2 TEM structure

I’ve been using a Makerbot 2 for the last week or so, trying to see if we can use the same PDMS contact lithography techniques that we are all familiar with. In short, yes, but there is plenty of work to be done to make it a robust process for microfluidics.   Makerbot Printer The…

The objective of last week’s production was to track down the source of Cu contamination. The good news is that none of the wafers showed signs of Cu. The bad news is we are not sure why it has disappeared all of the sudden. Chris and I observed that there are particles in the well…

Introduction Permeable membranes provide a physiologically relevant cell culture substrate for in vitro study of barrier cell types, such as endothelial cells, which assume a polarized morphology with distinct apical and basolateral surfaces. Cell morphology and subsequent monolayer formation and barrier function are largely dependent on initial interactions with the cell culture substrate via focal adhesions….

These chips were 2.9 mm TEM grid with a single 25 um window.  20 nm thick NPN is covered with 100 nm TEOS with a 2 um opening to expose ~1000 pores.  Wafer number 2176. Following are IV curve analyses for the above material as well as membranes treated with ALD alumina. These were measured…

Experiments were conducted to determine how effectively protein is bound by suspended graphene oxide (GO) particles. This is important for our application because we hope to use GO as a membrane to bind toxins present in blood. BSA (bovine serum albumin) was used as the test protein. Test samples consisted of a mixture of BSA…

In the last production cycle, there were several wafers annealed for longer than our standard 1 minute RTP soak time.  Recall in my earlier post, I observed a significant change in pore morphology in a 30 nm thick silicon membrane annealed at 1050 C for 1 min/5 min. In this series of experiments, we observe…