Engineers at the University of Alberta have created a wind energy generator that they hope people will one day be able to use to power their own homes.
"We have developed a simple, reliable, controller for small scale wind energy generators that is cheaper than competing technologies," said Dr. Andy Knight, a professor in the U of A Department of Electrical and Computer Engineering and lead author of a paper on the subject published recently in IEEE Transactions on Energy Conversion.
The traditional problem with harnessing wind energy has been the high cost and the low return of energy, especially for small-scale generators, Knight explained. A particular problem is that the devices have been unable to convert any energy when winds fall below specific cut off speeds, and much energy is therefore wasted.
Ryan Smith | EurekAlert!
Engineers program tiny robots to move, think like insects
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Electromagnetic water cloak eliminates drag and wake
12.12.2017 | Duke University
DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
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