The particle-tracking set-up is based on a homebuilt inverted microscope (Fig. 1) designed for high mechanical stability. The fluidic sample cell contains fixed polystyrene beads that are firmly ...

In the aftermath of our annual ritual for receiving the newest and shiniest iPhones, let’s not forget that even our slightly outdated phones are pretty nifty devices. With a cheap glass bead, a ...

Want a microscope to attach to your smart phone? If you have access to a three-dimensional printer, you can make one using materials costing pennies and design specifications Pacific Northwest ...