{"id":907,"date":"2010-06-28T15:04:52","date_gmt":"2010-06-28T19:04:52","guid":{"rendered":"https:\/\/wpmu2.mit.local\/?p=907"},"modified":"2010-06-28T16:02:20","modified_gmt":"2010-06-28T20:02:20","slug":"electronic-transport-in-graphene-devices","status":"publish","type":"post","link":"https:\/\/wpmu2.mit.local\/electronic-transport-in-graphene-devices\/","title":{"rendered":"Electronic Transport in Graphene Devices"},"content":{"rendered":"<div class=\"page-restrict-output\"><p><script type=\"text\/javascript\"><\/script>Graphene is an exciting new material in the world of electron transport.\u00a0 At exactly one atom thick, graphene is an ideal two-dimensional substance.\u00a0 Its unique electronic structure, described at low energy by the Dirac equation, leads to phenomena such as room-temperature ballistic transport on the order of microns and a room-temperature mobility of up to 100,000 cm<sup>2<\/sup>\/Vs.\u00a0 Our research investigates the use of this new material in a myriad of devices.\u00a0 We have combined graphene with superconducting metals to create devices that can probe the mixture of relativistic quantum mechanics and superconductivity.\u00a0 New phenomena such as the relativistic Josephson effect and specular Andreev reflection are predicted to emerge at this boundary, and we are actively pursuing them.\u00a0 We have also created devices that combine graphene\u2019s electronic structure with its exceptional mechanical properties.\u00a0 Graphene is one of the strongest materials on earth, with an unsurpassed Young\u2019s modulus on the order of 1 TPa.\u00a0 We build and test suspended graphene resonators, which may form the foundations of a new generation of chemical, mass, and biological sensors.\u00a0 We also carry out research on bilayer graphene, a two-layered stack of graphene, which maintains many of the unique qualities of monolayer graphene but adds to them a bandgap.\u00a0 By opening a bandgap in graphene, we hope to create quantum point contacts, quantum dots, and other interesting nanostructures.\u00a0 Finally, we are also nanostructuring graphene with crystallographic precision.\u00a0 Graphene edge structures are predicted to have a strong effect on the electrical, chemical, and magnetic properties of graphene structures.\u00a0 We have successfully built devices with edges defined along graphene\u2019s crystallographic axis, and we can use such devices to study edge-effects on graphene\u2019s electronic transport.<\/p>\n\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-1 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 50%;\n\t\t\t}\n\t\t\t#gallery-1 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-1' class='gallery galleryid-907 gallery-columns-2 gallery-size-medium'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/wpmu2.mit.local\/wp-content\/uploads\/2010\/06\/jarillo-herrero_graphene01.png'><img width=\"300\" height=\"257\" src=\"https:\/\/wpmu2.mit.local\/wp-content\/uploads\/2010\/06\/jarillo-herrero_graphene01-300x257.png\" class=\"attachment-medium size-medium\" alt=\"Figure 1\" loading=\"lazy\" aria-describedby=\"gallery-1-908\" srcset=\"https:\/\/wpmu2.mit.local\/wp-content\/uploads\/2010\/06\/jarillo-herrero_graphene01-300x257.png 300w, https:\/\/wpmu2.mit.local\/wp-content\/uploads\/2010\/06\/jarillo-herrero_graphene01.png 643w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-908'>\n\t\t\t\tFigure 1: A backgate sweep measurement showing graphene\u2019s characteristic Dirac peak in resistivity.\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/wpmu2.mit.local\/wp-content\/uploads\/2010\/06\/jarillo-herrero_graphene02.png'><img width=\"300\" height=\"185\" src=\"https:\/\/wpmu2.mit.local\/wp-content\/uploads\/2010\/06\/jarillo-herrero_graphene02-300x185.png\" class=\"attachment-medium size-medium\" alt=\"Figure 2\" loading=\"lazy\" aria-describedby=\"gallery-1-909\" srcset=\"https:\/\/wpmu2.mit.local\/wp-content\/uploads\/2010\/06\/jarillo-herrero_graphene02-300x185.png 300w, https:\/\/wpmu2.mit.local\/wp-content\/uploads\/2010\/06\/jarillo-herrero_graphene02.png 774w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-909'>\n\t\t\t\tFigure 2: A schematic of a graphene nanoresonator suspended between two contacts.  The circuit formed measures the graphene\u2019s resonance frequency by way of a mixing current.\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<\/div>","protected":false},"excerpt":{"rendered":"<div class=\"page-restrict-output\"><p>Graphene is an exciting new material in the world of electron transport.\u00a0 At exactly one atom thick, graphene is an&#8230;<\/p>\n<\/div>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[28],"tags":[4047,4086],"_links":{"self":[{"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/posts\/907"}],"collection":[{"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/comments?post=907"}],"version-history":[{"count":6,"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/posts\/907\/revisions"}],"predecessor-version":[{"id":953,"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/posts\/907\/revisions\/953"}],"wp:attachment":[{"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/media?parent=907"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/categories?post=907"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/tags?post=907"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}