Pumping water with no electric field (on average)

Alternating Current Electro-Osmotic Pumping at Asymmetrically Metallized Porous Membranes from Jasmin Beharic Here are the slides from Jaz’s presentation at the fall AIChE meeting earlier this month. We are putting electric fields across thin porous membranes to pump water. The unusual thing about our work is the time-averaged amplitude of the electric field is 0. …

lasers in space

It’s not really lasers in space, but now we have a laser feeding into the vacuum of the electron microscope. This is great for viewing how microelectromechanical (MEMS) structures respond to infrared light (915 nm). The problem with viewing our strain-engineered MEMS structures on the workbench with an optical microscope, is that they move in …

3D Plots: MATLAB tutorial

I’m getting questions about MATLAB plots. Maybe it’s project time. Although I am busy learning Python and matplotlib, I won’t hate on MATLAB–here is my tutorial on plotting your data in 3D using 3 kinds of MATLAB plots. This time of year brings questions on which software is best for all kinds of topics. Common topics for …

Add some fiber to your 3D printer’s diet

We continue to investigate the potential of strings and fibers added to 3D printed, laser-cut and machined parts. The most basic application is soft, flexible links between parts that wouldn’t normally bend. Beyond that, conductive materials and sliding cables are discussed in this slide set from the IDETC conference. Here is the preprint 

New grant: Combining Soft Materials with Mechanical Parts

The lab has a new grant from the Kentucky Science and Engineering Foundation: “Combining Soft Materials with Mechanical Parts for Robotic and Human Health Applications.” We will install functional fibers in laser-cut and 3D printed parts using a modified sewing machine. Above: video of the current machine installing high strength Kevlar fiber in a plastic …