Power and Electrical Engineering

This topic covers issues related to energy generation, conversion, transportation and consumption and how the industry is addressing the challenge of energy efficiency in general.

innovations-report provides in-depth and informative reports and articles on subjects ranging from wind energy, fuel cell technology, solar energy, geothermal energy, petroleum, gas, nuclear engineering, alternative energy and energy efficiency to fusion, hydrogen and superconductor technologies.

New Chip Design Delivers Better Performance, Longer Battery Life for Cell Phones, WiFi, and Other Wireless Communications

Anyone who uses a cell phone or a WiFi laptop knows the irritation of a dead-battery surprise. But now researchers at the University of Rochester have broken a barrier in wireless chip design that uses a tenth as much battery power as current designs and, better yet, will use much less in emerging wireless devices of the future.

Hui Wu, professor of electrical and computer engineering at the University of Rochester, a pioneer in a circuit design called an “injection locked freq

Smart coatings project aims to bring more readable display screens

Smart coatings that should allow cash machine, mobile phone and laptop display screens to be read much more easily in bright sunlight could soon be on the way, thanks to a major research project unveiled today.

Scientists from the University of Abertay Dundee and the University of Greenwich are joining forces with specialist screen and thin film coatings manufacturers in the £600,000 ENDSENSE project, which is part-funded by the Department of Trade & Industry.

The two-y

Nanogenerators may spark miniature machines

Devices convert simple motion into electricity

Researchers at the Georgia Institute of Technology have crafted tiny nanowires that generate electricity when they vibrate. Just like the quartz crystal in a watch, the zinc-oxide nanowires are piezoelectric, which means bending causes them to produce an electrical charge.

Only 20-40 billionths of a meter in diameter, each fiber partners with millions of others to form a nanogenerator capable of producing significant amounts o

Graphite-based circuitry may be foundation for devices that handle electrons as waves

New electronics

A study of how electrons behave in circuitry made from ultrathin layers of graphite – known as graphene – suggests the material could provide the foundation for a new generation of nanometer scale devices that manipulate electrons as waves – much like photonic systems control light waves.

In a paper published April 13 in Science Express, an online advance publication of the journal Science, researchers at the Georgia Institute of Technology and the C

Wireless sensor networks offer high-tech assurance for a world wary of earthquakes

Fitted with computer chips, sensors monitor a bridge’s health – and its ability to perform after a catastrophe

An earthquake strikes a large city, wrecking roads and bridges, stranding rush-hour commuters, trapping office workers inside high-rise buildings.

As director of the city’s transportation authority, you have minutes to make a momentous decision. What is the safest, fastest route that rescue teams can take to travel to hard-hit areas of the city? Which bridges,

MIT researchers build tiny batteries with viruses

MIT scientists have harnessed the construction talents of tiny viruses to build ultra-small “nanowire” structures for use in very thin lithium-ion batteries. By manipulating a few genes inside these viruses, the team was able to coax the organisms to grow and self-assemble into a functional electronic device.

The goal of the work, led by MIT Professors Angela Belcher, Paula Hammond and Yet-Ming Chiang, is to create batteries that cram as much electrical energy into as small or

Page
1 540 541 542 543 544 617