Putting solar cells on plastic creates some interesting possibilities, according to University of California chemists A. Paul Alivisatos, Wendy Huynh, and Janke Dittmer. "This opens up all sorts of new applications, like putting solar cells on clothing to power LEDs, radios, or small computer processors," says Dittmer. The team created a hybrid solar cell made from tiny rods dispersed in an organic polymer layer. The nanorods act like wires. When they absorb light, they generate electrons, which travel the length of the rod until collected by an aluminum electrode. The polymer layer is 200 nanometers thick—less than the width of a human hair—and is sandwiched in between the electrodes. The hybrid solar cell generates 0.7V. Unlike semiconductor-based photovoltaic devices, the plastic solar cells can be made without clean rooms and vacuum chambers. Visit www.berkeley.edu.
During a teardown of the iPad Air and Microsoft Surface Pro 3 at the Medical Design & Manufacturing Show in Schaumburg, Ill., an engineer showed this "inflammatory" video about the dangers of maliciously mishandling lithium-ion batteries.
The Window Watcher stops the burglar before he does damage or enters the house. House alarm service companies set off alarms and call the service only after the burglar has damaged and entered the house.
If you’re designing a handheld device or industrial machine that will employ a user interface, then you’ll want to check out the upcoming Design News Continuing Education Center course, "Engineering Principles Behind Advanced User Interface Technologies.”
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.