Makerware 3d print Preview
One neat feature of the Makerware software is to visualize the printed layers before actually printing them. You can catch a lot of errors with this feature; I highly recommend it.
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Wetting of Nanocavities using Isobaric Cooling
Summary and Instructional video The simplest way to get something wet is to allow water to condense on the surface of the something. In our case, we have a number of nanocavities (~ 0.1 femtoliters) with porous tents over them. The easiest thing to do is simply chill the substrates down to allow condensation to form….
Bonding PDMS to PET films
PET is a very common material used in various cell culture applications. Unfortunately it’s chemical inertness makes it immune to plasma activation, and we can’t bond PDMS devices to PET. I am working with a PET films coated with Indium Tin Oxide (ITO) on one side of the film. The film, in terms of texture,…
Animations with Sketchup
Sketchup is a great tool for showing off your microsystem ideas, complete with animation capabilities. However, it cannot intrinsically move objects around, show how water flows in a channel, or insert pieces into a slot, which are useful for understanding how a microsystem can be assembled. Keyframe Animation is a plugin for sketchup that…
New Alt. Membrane Release Recipe (Nitride RIE)
I have lost many chips during my MgF2 or Au or Pt process due to yield problems with my RIE. I have wondered if the problem was due to power spikes. I have observed that my most poorly yielding etch runs usually have uneven power or power spikes during the run. Increasing window size (active area)…
Schematic of Long Term Clearance Test Setup.
This is the setup used for the long term clearance testing. The fraction collector can be set to advance to the next collection tube at set intervals from 1 min to 99 min. I am currently conducting an evaporation test with both PBS and 100% serum. I weighed six collection tubes, two were filled with…
Rotation Project Complete: Dialysis of cytochrome c across a commercial membrane
Dan Steiner Rotation Summary Abstract The purpose of this rotation project was to develop and test a clampable system for eventual use in scalable nanomembrane dialysis systems. The nanomembrane dialysis system will be miniaturized into a compact, wearable hemodialysis device that will provide more effective human dialysis treatment (Johnson et al. 2013). For initial tests, a…