Energy Harvesting

Intro: Hi all, as we investigate the formation of HUVEC focal adhesions on porous SiO2 membrane , we also looked at fibronectin fibriollogenesis. Interestingly, it appears that after 24 hr (since the initial seeding), the fibronectin fibrils formed by HUVEC vary depending on the pore characteristics of the SiO2 membrane. In this case, we looked at…

Below are images from two samples that were annealed at 950 C and 1050 C post-EDP etch.  The lower temp anneal produced a membrane with many features that do not seem to penetrate the nc-Si.  There were a few (couple in each field) smaller pores ~ 10 nm in the outer samples.  This supports Jess…

Today I etched wafer 621, which is the pair to 620.  While w620 has a relatively low pinhole density, w621 shows a much higher occurence of defects. Since the front-end processing and thermal treatment was identical for these wafers, I believe that the variability lies in the etch process.  Looking at the two wafers side-by-side,…

I used the spectroscopic ellipsometer to measure several wafers deposited using the AJA system.  I verified film uniformity as well as film quality using index of refraction as the metric.  The term “w/ Bias” refers to an applied RF power over the substrate.  The bias adds energy to the surface as adatoms re-arrange during deposition…