Protected: SERS Measurements on 150C, 250C, 350C 1236 npMgF2
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Updated: 25-40-25 nm OSO SEPCONS
We created a 25-40-25 OSO stack with a SEPCON pattern. RTP at 1050 C 100 C/s 60 s. The following images show a comparison between the STEM detector and the SEM detector, and then a couple more images at 100 kx and 50 kx. I calculated a porosity of ~6.5 %, and…
Desalting with Dialysis Cassettes
One area of use to explore for the membranes is desalting, the removal of salts from solutions (such as those containing proteins). Two dialysis products made my Thermo/Pierce were tested to develop a protocol and test manufacturer’s claims. These products are the mini-dialysis unit on the left and the dialysis cassette on the right; both…
Long Term Urea Clearance (8 hours)
SET-UP Syringe pump: 5 mL of 7.6-nmol/100µL, 5.6 µL/min pump rate. Single Channel dialyser, 10 mm long, 0.5 mm wide, 0.3 mm high in stirred beaker of DI water Fraction Collector programed to rotate every 30 min. Set up in refrigerator, 40˚C. Figure 1: Long term dialysis clearance set up in refrigerator. Syringe pump, stirred…
Burst Pressure, Permeance of NSN pnc-Si SEPCONS with large pores
Karl, Charles and I measured the burst pressure and permeance of some 30-50-30 and 30-100-30 NSN. Burst Pressure: The SEPCONs readily burst at pressures under 1 psi when the flow was directed from the backside of the chip through the membrane. The membranes were able to withstand higher pressures when the pressure was applied from…
Journal Club – Oo et al, 2016 – A nanoporous gold membrane for sensing applications
Paper: Oo2016 Supplementary Info:Oo2016SI Abstract: Design and fabrication of three-dimensionally structured, gold membranes containing hexagonally close-packed microcavities with nanopores in the base, are described. Our aim is to create a nanoporous structure with localized enhancement of the fluorescence or Raman scattering at, and in the nanopore when excited with light of approximately 600 nm, with a view…