After seeing my previous post on modulating EO pumping behavior with an applied voltage, Jim asked if we could use pnc-Si as an Ultrasound generator. In the following video, I gave it a shot: MVI_2604 (relevant points from the video:…

In order to resolve the silicon nitride- silicone gasket bonding issue, I, Josh, Tucker and Greg used different approaches to functionalize the nanoporous nitride (NPN) surface. Both surfaces of NPN, although have same material (silicon nitride), behave differently. The flat…

Introduction The Membrane Flow Analysis Device for Gas (MFAD-G), Quality Control Model, is the first* of a 3-version series of devices that, altogether, will allow use-specified measurement of flow rate and flow pressure of gas and liquid media through chip-mounted…

Back in November we were visited by Tom Berkelman of BioRad to see if he could use our NPN membranes to successfully separate some proprietary nanoparticles from IgG in a solvent with secret ingredients. These particles have an interesting absorbance…

Because I’ve been having such a difficult time measuring consistent zetapotentials (a big and heartbreakingly inconclusive post on those efforts is forthcoming) I decided to use one of my silver-coated SNMs as an EO pump and see if changing the…

Please plan accordingly and be sure all moveable items are off the floor the night before.

Cindy Hartnett – professor of mechanical engineering at Louisville requested some pnc-Si chips after reading our PNAS paper. In requesting the material she mentioned … I’ve long been searching for a low-voltage way to drive some micro-actuators. Electrokinetic pumps looked…

SU-8 3010 has been used to create a scaffold in the fabrication of the liftoff membranes. The supplier of the negative resist, MicroChem, rates it for a 13 moth shelf life. We were having difficulty achieving good liftoff with membranes…

In April of last year, I spent a considerable amount of time trying to visualize protein separations using SDS-PAGE (Sodium Dodecyl Sulfate-PolyAcrylamide Gel Electrophoresis) gels, and ultimately was able to get some data: I was trying to show that 15…

Previous posts: Theory Deposition Etching Imaging First Freestanding Membranes I had previously made free-standing nanomembranes that were mostly MgF2 according to the EDAX scan of the freestanding region:   I hoped to duplicate my results and send over a few more samples to Nottingham. With…