{"id":26326,"date":"2020-10-10T16:33:36","date_gmt":"2020-10-10T09:33:36","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=26326"},"modified":"2021-11-05T15:10:25","modified_gmt":"2021-11-05T08:10:25","slug":"nguon-dien-sach-vo-han-tu-graphene","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/nguon-dien-sach-vo-han-tu-graphene\/","title":{"rendered":"Ngu\u1ed3n \u0111i\u1ec7n s\u1ea1ch, v\u00f4 h\u1ea1n t\u1eeb graphene"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>Nh\u00f3m c\u00e1c nh\u00e0 v\u1eadt l\u00fd thu\u1ed9c \u0110\u1ea1i h\u1ecdc Arkansas, M\u1ef9 ph\u00e1t tri\u1ec3n th\u00e0nh c\u00f4ng m\u1ed9t m\u1ea1ch \u0111i\u1ec7n c\u00f3 kh\u1ea3 n\u0103ng thu nh\u1eadn chuy\u1ec3n \u0111\u1ed9ng nhi\u1ec7t c\u1ee7a graphene v\u00e0 chuy\u1ec3n th\u00e0nh d\u00f2ng \u0111i\u1ec7n.<\/strong><\/h2>\n\n\n\n<p>Paul Thibado, gi\u00e1o s\u01b0 v\u1eadt l\u00fd, tr\u01b0\u1edfng nh\u00f3m nghi\u00ean c\u1ee9u cho bi\u1ebft, m\u1ed9t m\u1ea1ch thu n\u0103ng l\u01b0\u1ee3ng d\u1ef1a tr\u00ean graphene c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o m\u1ed9t con chip, cung c\u1ea5p ngu\u1ed3n \u0111i\u1ec7n \u00e1p th\u1ea5p, s\u1ea1ch, kh\u00f4ng gi\u1edbi h\u1ea1n th\u1eddi gian cho nh\u1eefng thi\u1ebft b\u1ecb ho\u1eb7c c\u1ea3m bi\u1ebfn nh\u1ecf.<\/p>\n\n\n\n<p>\u00dd t\u01b0\u1edfng thu n\u0103ng l\u01b0\u1ee3ng t\u1eeb graphene g\u00e2y tranh c\u00e3i do b\u00e1c b\u1ecf kh\u1eb3ng \u0111\u1ecbnh n\u1ed5i ti\u1ebfng c\u1ee7a nh\u00e0 v\u1eadt l\u00fd Richard Feynman r\u1eb1ng, chuy\u1ec3n \u0111\u1ed9ng nhi\u1ec7t c\u1ee7a nguy\u00ean t\u1eed, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 chuy\u1ec3n \u0111\u1ed9ng Brown, kh\u00f4ng th\u1ec3 t\u1ea1o ra \u0111\u1ed9ng n\u0103ng.<\/p>\n\n\n\n<p>Nh\u00f3m nghi\u00ean c\u1ee9u Thibado ph\u00e1t hi\u1ec7n r\u1eb1ng, \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, chuy\u1ec3n \u0111\u1ed9ng nhi\u1ec7t c\u1ee7a graphene th\u1ef1c t\u1ebf t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u (AC) trong m\u1ea1ch, m\u1ed9t k\u1ebft qu\u1ea3 khoa h\u1ecdc t\u1eebng \u0111\u01b0\u1ee3c cho l\u00e0 \u0111i\u1ec1u kh\u00f4ng th\u1ec3.<\/p>\n\n\n\n<p>Nh\u1eefng n\u0103m 1950, nh\u00e0 v\u1eadt l\u00fd L\u00e9on Brillouin c\u00f4ng b\u1ed1 m\u1ed9t b\u00e0i b\u00e1o khoa h\u1ecdc c\u00f3 t\u00ednh b\u01b0\u1edbc ngo\u1eb7t, b\u00e1c b\u1ecf \u00fd ki\u1ebfn cho r\u1eb1ng th\u00eam m\u1ed9t \u0111i\u1ed1t \u0111\u01a1n &#8211; c\u1ed5ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u &#8211; v\u00e0o m\u1ea1ch \u0111i\u1ec7n l\u00e0 c\u00f3 th\u1ec3 thu n\u0103ng l\u01b0\u1ee3ng t\u1eeb chuy\u1ec3n \u0111\u1ed9ng Brown.<\/p>\n\n\n\n<p>T\u1eeb nh\u1eadn th\u1ee9c n\u00e0y, nh\u00f3m nghi\u00ean c\u1ee9u Thibado ch\u1ebf t\u1ea1o m\u1ea1ch \u0111i\u1ec7n v\u1edbi 2 \u0111i\u1ed1t nh\u1eb1m bi\u1ebfn \u0111\u1ed5i d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u th\u00e0nh d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC).<\/p>\n\n\n\n<p>S\u1eed d\u1ee5ng c\u00e1c \u0111i\u1ed1t \u0111\u1ed1i l\u1eadp, cho ph\u00e9p d\u00f2ng \u0111i\u1ec7n ch\u1ea1y theo c\u1ea3 hai chi\u1ec1u theo c\u00e1c \u0111\u01b0\u1eddng d\u1eabn ri\u00eang bi\u1ec7t qua m\u1ea1ch, c\u00e1c nh\u00e0 khoa h\u1ecdc t\u1ea1o ra d\u00f2ng xung \u0111i\u1ec7n m\u1ed9t chi\u1ec1u th\u00e0nh c\u00f4ng n\u0103ng tr\u00ean \u0111i\u1ec7n tr\u1edf t\u1ea3i.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/khds.1cdn.vn\/2020\/10\/06\/mangdien.png\" alt=\"\"\/><figcaption><em>C\u1ea5u tr\u00fac c\u1ee7a m\u1ea1ng \u0111i\u1ec7n s\u1eed d\u1ee5ng chuy\u1ec3n \u0111\u1ed9ng Brown c\u1ee7a graphene.<\/em><\/figcaption><\/figure><\/div>\n\n\n\n<p>Ngo\u00e0i ra, c\u00e1c nh\u00e0 khoa h\u1ecdc nh\u1eadn ra r\u1eb1ng, thi\u1ebft k\u1ebf m\u1ea1ch \u0111i\u1ec7n theo c\u00e1ch n\u00e0y l\u00e0m t\u0103ng s\u1ea3n l\u01b0\u1ee3ng \u0111i\u1ec7n. Vi\u1ec7c&nbsp;\u0111\u00f3ng-m\u1edf, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00f4ng t\u1eafc c\u1ee7a c\u00e1c \u0111i\u1ed1t khu\u1ebfch \u0111\u1ea1i c\u00f4ng su\u1ea5t \u0111i\u1ec7n thu \u0111\u01b0\u1ee3c, thay v\u00ec l\u00e0m gi\u1ea3m s\u1ea3n l\u01b0\u1ee3ng. T\u1ef7 l\u1ec7 thay \u0111\u1ed5i \u0111i\u1ec7n tr\u1edf t\u1eeb c\u00e1c \u0111i\u1ed1t t\u0103ng th\u00eam h\u1ec7 s\u1ed1 cho c\u00f4ng su\u1ea5t \u0111i\u1ec7n n\u0103ng \u0111\u1ea7u ra.<\/p>\n\n\n\n<p>Theo Kumar, graphene v\u00e0 m\u1ea1ch chia s\u1ebb m\u1ed1i quan h\u1ec7 c\u1ed9ng sinh. M\u1eb7c d\u00f9 m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t th\u1ef1c hi\u1ec7n c\u00f4ng n\u0103ng tr\u00ean \u0111i\u1ec7n tr\u1edf t\u1ea3i, graphene v\u00e0 m\u1ea1ch \u1edf c\u00f9ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 nhi\u1ec7t kh\u00f4ng truy\u1ec1n gi\u1eefa 2 b\u1ed9 ph\u1eadn n\u00e0y.<\/p>\n\n\n\n<p>Nh\u00f3m nghi\u00ean c\u1ee9u ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c, chuy\u1ec3n \u0111\u1ed9ng t\u01b0\u01a1ng \u0111\u1ed1i ch\u1eadm c\u1ee7a graphene t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n trong m\u1ea1ch c\u00f3 t\u1ea7n s\u1ed1 th\u1ea5p, ph\u00e1t hi\u1ec7n n\u00e0y c\u00f3 \u00fd ngh\u0129a r\u1ea5t quan tr\u1ecdng theo quan \u0111i\u1ec3m c\u00f4ng ngh\u1ec7 do \u0111i\u1ec7n t\u1eed ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 h\u01a1n \u1edf t\u1ea7n s\u1ed1 th\u1ea5p.<\/p>\n\n\n\n<p>GS Thibado gi\u1ea3i th\u00edch: <em>&#8220;H\u1ea7u h\u1ebft \u0111\u1ec1u ngh\u0129 r\u1eb1ng, d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111i\u1ec7n tr\u1edf t\u1ea1o ra nhi\u1ec7t n\u0103ng, nh\u01b0ng d\u00f2ng \u0111i\u1ec7n Brown th\u00ec kh\u00f4ng t\u1ea1o ra nhi\u1ec7t. Tr\u00ean th\u1ef1c t\u1ebf, n\u1ebfu kh\u00f4ng c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua, \u0111i\u1ec7n tr\u1edf s\u1ebd ngu\u1ed9i \u0111i.\u00a0Nh\u1eefng g\u00ec ch\u00fang t\u00f4i l\u00e0m l\u00e0 \u0111\u1ecbnh tuy\u1ebfn l\u1ea1i d\u00f2ng \u0111i\u1ec7n trong m\u1ea1ch v\u00e0 bi\u1ebfn d\u00f2ng \u0111i\u1ec7n Brown th\u00e0nh c\u00f3 \u00edch&#8221;<\/em>.<\/p>\n\n\n\n<p>M\u1ee5c ti\u00eau ti\u1ebfp theo c\u1ee7a nh\u00f3m l\u00e0 x\u00e1c \u0111\u1ecbnh xem d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong t\u1ee5 \u0111i\u1ec7n \u0111\u1ec3 s\u1eed d\u1ee5ng sau n\u00e0y hay kh\u00f4ng v\u00e0 thu nh\u1ecf m\u1ea1ch \u0111\u1ec3 c\u00f3 th\u1ec3 in tr\u00ean tr\u00ean mi\u1ebfng silicon ho\u1eb7c chip.<\/p>\n\n\n\n<p>N\u1ebfu h\u00e0ng tri\u1ec7u vi m\u1ea1ch nh\u1ecf n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf tr\u00ean chip c\u00f3 k\u00edch th\u01b0\u1edbc 1mm x 1mm, nh\u1eefng t\u1ea5m pin n\u00e0y c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 thay th\u1ebf pin n\u0103ng l\u01b0\u1ee3ng th\u1ea5p.<\/p>\n\n\n\n<p><em>Ngu\u1ed3n: Th\u00e1i B\u1eb1ng- https:\/\/khoahocdoisong.vn\/nguon-dien-sach-vo-han-tu-graphene-151295.html<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nh\u00f3m c\u00e1c nh\u00e0 v\u1eadt l\u00fd thu\u1ed9c \u0110\u1ea1i h\u1ecdc Arkansas, M\u1ef9 ph\u00e1t tri\u1ec3n th\u00e0nh c\u00f4ng m\u1ed9t m\u1ea1ch \u0111i\u1ec7n c\u00f3 kh\u1ea3 n\u0103ng thu nh\u1eadn chuy\u1ec3n \u0111\u1ed9ng nhi\u1ec7t c\u1ee7a graphene v\u00e0 chuy\u1ec3n th\u00e0nh d\u00f2ng \u0111i\u1ec7n. Paul Thibado, gi\u00e1o s\u01b0 v\u1eadt l\u00fd, tr\u01b0\u1edfng nh\u00f3m nghi\u00ean c\u1ee9u cho bi\u1ebft, m\u1ed9t m\u1ea1ch thu n\u0103ng l\u01b0\u1ee3ng d\u1ef1a tr\u00ean graphene c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":26327,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[56,47],"tags":[],"class_list":["post-26326","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cong-nghe","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/26326","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=26326"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/26326\/revisions"}],"predecessor-version":[{"id":29503,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/26326\/revisions\/29503"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/26327"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=26326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=26326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=26326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}