Nanobattery Paper Nanobattery Supplement I have long desired to make energy storage devices with our nanomembranes (supercapacitor post), mainly because they would be really great separators, having both excellent charge conduction and physical barrier resistance due to the porosity and material properties of silicon. Other groups have begun to take advantage of the increased…
Here is a graphical summary of the separation experiments performed the week of November 6th. Raw excel data is spread over 5 files: 11.4.14 qdot separations (10^13, 10^12, 10^11 Forward separations) 11.5.14 high conc reverse and forward (10^14 dots and IgG combination forward and reverse separations) 11.10.14 (retentate numbers for all separations) summarized qDot data (summary and graphs)…
Discussion: The BSA may have not been fresh enough to give good data, the difference between background and signal are pretty low. The Rhodamine IgG gave better signals but the PEG4 treated SiN is between the untreated SiN and bare pnc-Si. The latter having a lower signal. Here are the details. The fluorescent BSA was…
Ring Resonators are photonic structures that have a very repeatable behavior. As light is guided along a path, it can evanescently couple into a very closely positioned wire (submicron gap). If the wavelength of light is just right, constructive interference can occur, causing the rings to resonate (lost through scattering). Necessarily, this causes a drop…
Hi all, This post showcase a simple (low-tech) alignment tool for assembling the different components of a microfluidic chamber. Essentially, the alignment pieces are made from two index papers cut using the Silhouette Cameo. The two cut index papers are bonded together using double-sided tapes. The square holes are where the membrane chips are to…
Vincent has asked us to integrate our nanoporous filter on top of a thin layer of silicon nitride, so that he can clean up his analyte before being exposed to his single nanopore (fabricated using a dielectric breakdown). There are many different ways to join silicon wafers together. Specifically, we wish to create the following…
Lately I’ve been working on building computational models which can be used to make predictions about the behavior of a diffusion experiment, to allow for the collection of large pools of data without the difficulty and time consumption associated with actually performing an experiment. This could prove to be a valuable tool for the continued…
I’ve been trying for some time to make chips that can dynamically change their surface charge. To this end I’ve made the following NFT chips, which have 12 nm of silver coated in 10 nm alumina: Note the Aluminum foil coating the insides of the gel box. The silver layer is either photoactive or…
In a previous post (link) I presented a video that showed that the voltage applied to a silver film changed the pumping behavior of a membrane. The key data is summarized by the following powerpoint slide: My most recent post (link – electrical characteristics…) showed, however, that the breakdown voltage of these silver and alumina NFTs is…
In recent posts we have tested the total volume of filtrate as a function of time in the centrifuge. We used NPN with different average pore sizes and we studied 100 nm and 20 nm NPs as well as IgG. We showed that while 100 nm NPs were completely blocked 20 nm NPs and the…