{"id":85437,"date":"2009-12-16T14:39:04","date_gmt":"2009-12-16T19:39:04","guid":{"rendered":"http:\/\/www.technologytransfertactics.com\/content\/?p=5519"},"modified":"2009-12-16T14:39:04","modified_gmt":"2009-12-16T19:39:04","slug":"cornell-researcher%e2%80%99s-efficient-transistor-could-someday-power-laptops-cars","status":"publish","type":"post","link":"https:\/\/mereja.media\/index\/85437","title":{"rendered":"Cornell researcher\u2019s efficient transistor could someday power laptops, cars"},"content":{"rendered":"<p>A Cornell University researcher has created an efficient transistor from a material that may soon replace silicon as king of semiconductors for power applications. Junxia Shi, a graduate student in the laboratory of Lester Eastman, PhD, the John Given Foundation professor of engineering, developed the patent-pending device, which could form the basis for the circuitry in products from laptops to hybrid vehicles to windmills and other power electronic systems. The basic electrical switch is constructed from the compound gallium nitride, a material with unique electrical properties that Eastman and colleagues have been studying for more than a decade. The transistor&#8217;s on-resistance &#8212; or measure of resistance to electric current &#8212; is 10 to 20 times lower than today&#8217;s silicon-based power devices. It also has a high breakdown voltage &#8212; a measure of how much voltage can be applied across a material before it fails. Research on the device was published in <a href=\"http:\/\/link.aip.org\/link\/?APPLAB\/95\/042103\/1\" ><em>Applied Physics Letters<\/em><\/a>.<\/p>\n<p>At the heart of improving electronics is the ability to make devices that can switch electricity from high voltage to high current while minimizing power loss, according to Eastman. &#8220;Power has to go from A to B in a machine with a high voltage transmission line to minimize power loss,&#8221; he says. &#8220;Before now, there were no electronic devices that could handle both high current and the high voltage, but our device can do it.&#8221; The transistors might one day power everything from hybrid electric vehicles to Navy destroyers. In fact, the U.S. Navy first funded Cornell&#8217;s research into gallium nitride transistors more than 10 years ago and is a major funder of Eastman&#8217;s research today. Shi and Eastman have a provisional patent on their device. The New Jersey-based company Velox and Motorola spinoff Freescale helped fund the research with the hope of producing the devices on an industrial scale.<\/p>\n<p>Source: <a href=\"http:\/\/www.innovations-report.com\/html\/reports\/physics_astronomy\/efficient_transistor_day_power_laptops_cars_145317.html\" >Innovations Report<\/a><\/p>\n<p><br class=\"spacer_\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A Cornell University researcher has created an efficient transistor from a material that may soon replace silicon as king of semiconductors for power applications. Junxia Shi, a graduate student in the laboratory of Lester Eastman, PhD, the John Given Foundation professor of engineering, developed the patent-pending device, which could form the basis for the circuitry [&hellip;]<\/p>\n","protected":false},"author":67,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-85437","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts\/85437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/users\/67"}],"replies":[{"embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/comments?post=85437"}],"version-history":[{"count":0,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts\/85437\/revisions"}],"wp:attachment":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/media?parent=85437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/categories?post=85437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/tags?post=85437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}