General Motors is going to modify its Chevrolet Volt plug-in car to eliminate the possibility that its batteries can catch on fire hours or days after a serious side-impact crash. It turns out that battery coolant could leak on an electronic board, causing the fire. The leaks were discovered in tests in which a Volt was rotated until it was inverted. Only a small amount of … [Read more...]
Nanomaterials Doped Polymer Nanowires Synthesized by Pulsed Laser Irradiation
International Center for Materials Nanoarchitectonics (MANA) has succeeded in synthesizing nanomaterials doped polymer nanowires by a pulsed laser irradiation. The polymer nanowires grew perpendicular to the surface of a source film that included the nanomaterials and dye molecules as a photoabsorber. The technique is one of the solutions for fabricating of molecular devices … [Read more...]
Emails, more Emails and Jeff Bridges
It's estimated that, from a figure of 0.4% in 1995, now about 30% of the world's population are 'internet users'. Not sure exactly what being a 'user' entails; looking at a web page? clicking a link? sending an email? Probably the latter considering how many I receive. The Romans used little wax or wooden tablets, the Victorians introduced a penny-post system, today we command … [Read more...]
LEDs; The future's bright and hot.
LED based lighting is now a very hot topic (believe me, in electronic thermal management circles that used to be funny, the first few times). Control of packaged IC junction temperatures will always have a bearing on reliability but for LEDs thermal also effects functional performance in terms of brightness and colour. The hotter they get, the dimmer they appear. A particular … [Read more...]
IBM Retiree Wins Award from Engineers Society
Robert E. Simons was named the 2011 winner of the Allan D. Kraus Thermal Management Medal given recently by the committee that manages the annual award for the American Society of Mechanical Engineers. Simons is a retired IBM senior technical staff member who has had a 45-year career in the management of heat in electronics and holds more than 130 patents. He joined IBM in 1966 … [Read more...]
- « Previous Page
- 1
- …
- 216
- 217
- 218
- 219
- 220
- …
- 355
- Next Page »
