electrical-凯发k8官网

13-12-09 the energy needed to change the magnetic orientation of a single atom -- which determines its magnetic stability and therefore its usefulness in a variety of future device applications -- can be modified by varying the atom's electrical coupling to...

13-09-30 streamers may be great for decorating a child's party, but in dielectrics（电介质） , they are the primary origin of electric breakdown. they can cause catastrophic damage to electrical equipment, harm the surrounding environment, and lead to large-...

12-03-05 a new power scheme for cardiac（心脏的） pacemakers turns to an unlikely source: vibrations from heartbeats themselves. engineering researchers at the university of michigan designed a device that harvests energy from the reverberation（混响，反射）...

12-01-31 the heart's inner workings are mysterious, perhaps even more so with a new finding. engineers at the university of washington have discovered an electrical property in arteries not seen before in mammalian tissues. the researchers found that the wal...

11-06-23 a quick and easy way to detect groundwater in semi- arid（干旱的） hard rock areas that is also economical could improve the siting of borewells to improve clean water supply in the developing world. details of the approach are outlined in the inter...

11-05-17 efficiency is a problem with today's solar panels; they only collect about 20 percent of available light. now, a university of missouri engineer has developed a flexible solar sheet that captures more than 90 percent of available light, and he plans...

10-11-05 by applying electrical current to the brain, researchers reporting online on november 4 in current biology, a cell press publication, have shown that they could enhance a person's mathematical（数学的 ） performance for up to 6 months without influe...

10-09-29 conductive polymers（聚合物，高分子） are plastic materials with high electrical conductivity that promise to revolutionize a wide range of products including tv displays, solar cells, and biomedical sensors. a team of mcgill university researchers...

10-06-28 when high-temperature superconductors（超导体） were first announced in the late 1980s, it was thought that they would lead to ultra-efficient magnetic（磁性的） trains and other paradigm-shifting technologies. that didn't happen. now, a university...

10-03-07 technology that could see an end to the bane of many commuters - people talking loudly on their mobile phones - has been shown off by researchers. 国际信息及通信技术博览会上，研究人员向大家展示了一种装置，有了它，大家在上下班公交车上可能再也遇不到大...