PEGS 2014

I have been talking with JP about getting some pnc-Si membranes coated with ~10-20 nm layers of Pd (or Pd-Ag) to do preliminary tests on hydrogen permeation devices. Tom and I are thinking of submitting a proposal. This kind of technology has been used industrially and follows the general principle shown below: These operate at…

The company Protochips is making interesting microfluidic chips and systems for electron microscopy. See this page and this movie. Note their use of integrated spacers as thin as 150 nm to create a flow channel between back-to-back membrane chips. This not only relates to our work with Vincent in Ottawa, perhaps it gives us new…

Overview Analysis of blood has long proven to provide insight into the health of the respective patient. Arduously researched, many components of blood have arisen as markers of health. These include various biomarkers such as proteins, antibodies, and cell derived vesicles, but also include ion concentrations. While the library of markers is vast and continuously…

  Contrast agents are used to increase received signal in imaging systems. In the case of ultrasound, such agents are small micron sized gas bubbles. Ultrasound measures the change in acoustic impedance (product of density and speed of sound), but since the speed of sound in tissue is relatively constant, medical ultrasound effectively measures changes in…

For the upcoming tests I have planned for H2 purification, I need a fixture to hold the pnc-Si membranes (Sepcon format) that is compatible with operation up to 500 C.  No polymers are going to work. I describe the approach I’m working on below.  I heard that Karl is developing a holder similar to what…