Ultrathin films form 'warm' superconductors


	Ultrathin films form 'warm' superconductors

pokkets

10-8-2008 10:40 PM

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pokkets says:

Superconductors are particularly efficient, because they can carry a current, with very little 'resistance' where much energy can be lost in the form of heat.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/e2bf51af-0fed-49d5-b3a9-d1176c782da1/CB829C42-CC4C-49B3-8D12-6F3848A49942/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.abc.net.au/science/articles/2008/10/09/2386252.htm?site=science&topic=latest" href="http://www.abc.net.au/science/articles/2008/10/09/2386252.htm?site=science&topic=latest" style="font-size: 11px;">www.abc.net.au</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/10/09/2386252.htm?site=science&topic=latest">Julie Steenhuysen</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/10/09/2386252.htm?site=science&topic=latest"><P class="first">US researchers have developed ultrathin films that when sandwiched together form a superconductor, an advance that could lead to a new class of fast, power-saving electronics.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/10/09/2386252.htm?site=science&topic=latest"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/www.abc.net.au/img/A1046B92-CD72-4556-B623-C822324AE4EC" alt="Dr Ivan Bozovic" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/10/09/2386252.htm?site=science&topic=latest"><P>The films can be used at relatively high temperatures for superconductors, making them easier to handle and produce, they say.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/10/09/2386252.htm?site=science&topic=latest"><P>"What we have done is we have put together two materials, neither of which is a superconductor, and we found their interface - where they touch - is superconducting," says physicist Dr Ivan Bozovic of the <A target="_blank" href="http://www.energy.gov/">US Department of Energy</A>'s <A target="_blank" href="http://www.bnl.gov/world/">Brookhaven National Laboratory</A>.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/10/09/2386252.htm?site=science&topic=latest">"This superconducting layer is extremely thin. It is thinner than 1 nanometere, which is 1 billionth of a metre," says Bozovic,</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/10/09/2386252.htm?site=science&topic=latest">superconductors are useful because they are extremely efficient at conducting electricity.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/10/09/2386252.htm?site=science&topic=latest"><P>If cooled to the material's critical operating temperature, they have no resistance to the flow of electrical current, unlike ordinary electrical wires, which can eventually overheat.</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/CB829C42-CC4C-49B3-8D12-6F3848A49942/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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