I measured burst pressures on two non-unifrom wafers w391, w393. They have lots of pinholes (especially w391) but the pressure they withstand is pretty high. I expected it to be much lower after looking at the membranes in the microscope.
Today while I was imaging a Al2O3 coated pnc-Si membrane on the high-res TEM, I noticed something curious as I placed the beam on a single pore for a few minutes. I was initially interested in the structure of the aluminum oxide coating, but found that something started to deposit on the pore walls as…
Hi all, i have to present for a biomechanics journal club meet next Friday (Jun/06/2014) and figured that i might as well double-dip the presentation. Currently i am leaning forward to present this article: Takano (Futai) microfld nanofld 2012 [pocket-sized cell culture] which showcased a pocket-sized, stand-alone device for cell culture. No need for…
Using a wafer with a stack of Si-25nm(thermOx)-40nm(SiN)-50nm(PNCSi), lift-off was achieved on a small scale. First the SiN was etched using the standard process Simpore has developed, this also removed most/all of the PNCSi. The standard uChem process was then followed for SU8 application. A negative mask with 10um lines and 50um spaces was chosen…
In early May, the Barcikowski lab shipped us four samples of gold nanoparticles for us to run separations on. They took forever to get here, and had aggregated and precipitated by the time they arrived. About a week ago, the lab sent another batch of four samples (which differed slightly from the samples they sent…
I am in the process of inspecting each membrane in the newly created wafer 612. First of all, some samples (~10% counted so far) have tears on the membrane edges, shown below. Images were taken at 20x microscope magnification (reflection image followed by transmission). I also have been seeing circular defects which do not penetrate…
In the study, which combines the compressed sensing (CS) and the structured illumination microscopy (SIM) methods, an object plane should first be collected by a lens, and then the collected signal should be measured by a photomultiplier tube (PMT), located at the focal point of the lens. The recorded measurements present a measurement vector that…