Electrostatic chucks support and help cool silicon wafers during manufacturing. Conventional types use expensive, dielectric materials in the chuck's face that can introduce contaminants. Moreover, mechanical damage may result if the static-holding charge takes too long to discharge, as is often the case.
To lower costs, decrease cycle time, and generate less scrap, a new chuck face made of an easily produced, patterned silicon wafer, uses tiny, non-conductive silicon dioxide islands on its surface. These micromachined, non-conductive raised areas on the chuck face prevent excessive currents when the strong electric field is applied between the chuck face and the clamped wafer. Result: fast on/off cycling for quicker de-chucking.
Carl Seager, Sandia National Laboratories, (E) Albuquerque, NM 87185; (505) 844-9168.
Festo's BionicKangaroo combines pneumatic and electrical drive technology, plus very precise controls and condition monitoring. Like a real kangaroo, the BionicKangaroo robot harvests the kinetic energy of each takeoff and immediately uses it to power the next jump.
Design News and Digi-Key presents: Creating & Testing Your First RTOS Application Using MQX, a crash course that will look at defining a project, selecting a target processor, blocking code, defining tasks, completing code, and debugging.
These are the toys that inspired budding engineers to try out sublime designs, create miniature structures, and experiment with bizarre contraptions using sets that could be torn down and reconstructed over and over.
PowerStream is deploying the microgrid at its headquarters to demonstrate how people can generate and distribute their own energy and make their homes and businesses more sustainable through renewables.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.