{"id":7944,"date":"2018-01-10T21:17:59","date_gmt":"2018-01-10T14:17:59","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=7944"},"modified":"2018-01-10T21:17:59","modified_gmt":"2018-01-10T14:17:59","slug":"nhung-hieu-biet-moi-ve-graphene","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/nhung-hieu-biet-moi-ve-graphene\/","title":{"rendered":"Nh\u1eefng hi\u1ec3u bi\u1ebft m\u1edbi v\u1ec1 graphene"},"content":{"rendered":"<p><img decoding=\"async\" src=\"http:\/\/khoahocvacongnghevietnam.com.vn\/images\/stories\/thang-1-2018\/31-nhung.jpg\" alt=\"31 nhung\" \/><strong><br \/>\n<\/strong><\/p>\n<p>Tr\u00e1i v\u1edbi nh\u1eefng k\u1ebft lu\u1eadn tr\u01b0\u1edbc \u0111\u00e2y, graphene n\u1ed5i tr\u00ean m\u1eb7t n\u01b0\u1edbc nh\u01b0ng kh\u00f4ng \u0111\u1ea9y n\u01b0\u1edbc m\u00e0 thu h\u00fat n\u00f3. \u0110i\u1ec1u n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 h\u00f3a h\u1ecdc Liubov Belyaeva v\u00e0 Pauline van Deursen v\u00e0 Gr\u00e9gory F. Schneider ch\u1ee9ng minh, b\u00e1o c\u00e1o \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n tr\u00ean t\u1edd V\u1eadt li\u1ec7u ti\u00ean ti\u1ebfn.<\/p>\n<p>Graphene \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb v\u1eadt li\u1ec7u t\u01b0\u01a1ng t\u1ef1 graphite &#8211; v\u00ed d\u1ee5 nh\u01b0 b\u00fat ch\u00ec &#8211; \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao trong m\u1ed9t th\u1eddi gian d\u00e0i graphene \u0111\u01b0\u1ee3c gi\u1ea3 \u0111\u1ecbnh l\u00e0 ch\u1ea5t ch\u1ed1ng th\u1ea5m n\u01b0\u1edbc. S\u1ef1 kh\u00e1c bi\u1ec7t v\u1edbi graphite l\u00e0 do graphene c\u00f3 \u0111\u1ed9 l\u1edbn ch\u1ec9 b\u1eb1ng m\u1ed9t nguy\u00ean t\u1eed \u0111\u01a1n l\u1ebb.<\/p>\n<p><strong><em>Quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u1ea3m bi\u1ebfn sinh h\u1ecdc<\/em><\/strong><\/p>\n<p>C\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 graphene l\u00e0m ph\u00e1t sinh nhi\u1ec1u \u00fd t\u01b0\u1edfng kh\u00e1c nhau v\u1ec1 t\u00ednh ch\u1ea5t l\u00e0m \u01b0\u1edbt c\u1ee7a n\u00f3. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i \u0110\u1ea1i h\u1ecdc Leiden, H\u00e0 Lan \u0111\u00e3 kh\u00e1m ph\u00e1 ra r\u1eb1ng b\u1ec1 m\u1eb7t c\u1ee7a graphene tr\u00ean m\u1eb7t n\u01b0\u1edbc, v\u1edbi \u0111i\u1ec1u ki\u1ec7n n\u00f3 l\u00e0 s\u1ea1ch v\u00e0 tr\u01a1n, l\u00e0 ch\u1ea5t \u01b0a n\u01b0\u1edbc. N\u00f3i c\u00e1ch kh\u00e1c, graphene trong n\u01b0\u1edbc thu h\u00fat n\u01b0\u1edbc.<\/p>\n<p><strong><em>\u1ee8ng d\u1ee5ng graphene<\/em><\/strong><\/p>\n<p>Hi\u1ec3u bi\u1ebft s\u00e2u r\u1ed9ng r\u1ea5t c\u00f3 \u00fd ngh\u0129a \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng trong t\u01b0\u01a1ng lai c\u1ee7a graphene. L\u1edbp nguy\u00ean t\u1eed m\u1ecfng c\u00e1c nguy\u00ean t\u1eed cacbon \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp trong m\u1ed9t c\u1ea5u tr\u00fac t\u1ed5 ong, l\u00e0m cho v\u1eadt li\u1ec7u th\u00edch h\u1ee3p \u0111\u1ec3 s\u1eed d\u1ee5ng trong b\u1ed9 c\u1ea3m bi\u1ebfn sinh h\u1ecdc gi\u1ea3i m\u00e3 DNA. V\u1eadt li\u1ec7u si\u00eau m\u1ecfng n\u00e0y c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ea3m bi\u1ebfn, l\u1ecdc n\u01b0\u1edbc v\u00e0 m\u00e0ng c\u1ee7a t\u1ebf b\u00e0o nhi\u00ean li\u1ec7u. Trong t\u1ea5t c\u1ea3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p n\u00e0y, l\u1edbp graphene \u0111\u01b0\u1ee3c ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc \u1edf c\u1ea3 hai m\u1eb7t.<\/p>\n<p><strong><em>Tr\u00ean b\u1ec1 m\u1eb7t n\u01b0\u1edbc<\/em><\/strong><\/p>\n<p>Trong m\u1ed9t th\u1eddi gian d\u00e0i, graphene \u0111\u01b0\u1ee3c cho l\u00e0 \u0111\u1ea9y n\u01b0\u1edbc. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u cho r\u1eb1ng \u0111i\u1ec1u n\u00e0y l\u00e0 do graphene th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u1ea1o ra tr\u00ean m\u1ed9t b\u1ec1 m\u1eb7t kim lo\u1ea1i v\u00e0 sau \u0111\u00f3 chuy\u1ec3n sang m\u1ed9t ch\u1ea5t h\u1ed7 tr\u1ee3 r\u1eafn nh\u01b0 m\u1ed9t t\u1ea5m silic m\u1ecfng. Tuy nhi\u00ean trong qu\u00e1 tr\u00ecnh chuy\u1ec3n giao n\u00e0y, graphene c\u00f3 th\u1ec3 b\u1ecb h\u01b0 h\u1ecfng ho\u1eb7c b\u1ecb nhi\u1ec5m b\u1ea9n, l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh ch\u1ea5t l\u00e0m \u01b0\u1edbt.<\/p>\n<p><strong><em>\u0110\u1ed9 cong c\u1ee7a gi\u1ecdt n\u01b0\u1edbc<\/em><\/strong><\/p>\n<p>\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh b\u1ec1 m\u1eb7t c\u1ee7a m\u1ed9t l\u1edbp graphene c\u00f2n nguy\u00ean v\u1eb9n hay kh\u00f4ng, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 nh\u1ecf m\u1ed9t gi\u1ecdt n\u01b0\u1edbc v\u00e0o l\u1edbp graphene. Sau \u0111\u00f3 h\u1ecd x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 cong c\u1ee7a gi\u1ecdt n\u01b0\u1edbc \u0111\u1ec3 xem b\u1ec1 m\u1eb7t kh\u00f4ng th\u1ea5m n\u01b0\u1edbc, ho\u1eb7c n\u00f3 c\u00f3 h\u00fat n\u01b0\u1edbc. Tr\u00ean \u0111\u00e2y ch\u1ec9 l\u00e0 l\u00fd thuy\u1ebft, b\u1edfi v\u00ec trong th\u1ef1c t\u1ebf, m\u1ed9t gi\u1ecdt n\u01b0\u1edbc nh\u1ecf s\u1ebd l\u00e0m v\u1ee1 l\u1edbp graphene m\u1ecfng ngay l\u1eadp t\u1ee9c, t\u1ea1o ra nh\u1eefng v\u1ebft n\u1ee9t, v\u00e0 kh\u00f4ng th\u1ec3 \u0111o \u0111\u01b0\u1ee3c n\u1eefa.<\/p>\n<p><strong><em>B\u1eaft ch\u01b0\u1edbc n\u01b0\u1edbc<\/em><\/strong><\/p>\n<p>C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng n\u01b0\u1edbc \u0111\u00e1 ho\u1eb7c hydrogel thay v\u00ec n\u01b0\u1edbc l\u00e0m l\u1edbp h\u1ed7 tr\u1ee3. N\u01b0\u1edbc \u0111\u00e1 v\u00e0 hydrogel \u0111\u1eb7c h\u01a1n v\u00e0 l\u00e0 nh\u1eefng ch\u1ea5t b\u1eaft ch\u01b0\u1edbc n\u01b0\u1edbc t\u1ed1t. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u00f3 th\u1ec3 nh\u1ecf c\u00e1c gi\u1ecdt n\u01b0\u1edbc l\u00ean graphene v\u00e0 \u0111o g\u00f3c ti\u1ebfp x\u00fac gi\u1eefa b\u1ec1 m\u1eb7t graphene v\u00e0 b\u1ec1 m\u1eb7t gi\u1ecdt n\u01b0\u1edbc. H\u1ecd c\u0169ng l\u1eb7p l\u1ea1i c\u00e1c ph\u00e9p \u0111o v\u1edbi c\u00e1c ch\u1ea5t l\u1ecfng kh\u00e1c c\u00f3 t\u00ednh ph\u00e2n c\u1ef1c kh\u00e1c nhau. Sau \u0111\u00f3 h\u1ecd c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh t\u1ea5t c\u1ea3 c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u00e2n t\u1eed c\u1ee7a n\u01b0\u1edbc ng\u1ea7m \u0111\u01b0\u1ee3c c\u1ea3m nh\u1eadn b\u1edfi c\u00e1c ph\u00e2n t\u1eed trong gi\u1ecdt n\u01b0\u1edbc b\u00ean tr\u00ean.<\/p>\n<p><strong><em>Thay \u0111\u1ed5i ho\u00e0n to\u00e0n quan \u0111i\u1ec3m<\/em><\/strong><\/p>\n<p>Kh\u00e1m ph\u00e1 n\u00e0y c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn \u1ee9ng d\u1ee5ng c\u1ee7a graphene trong c\u1ea3m bi\u1ebfn, l\u1ecdc n\u01b0\u1edbc, v\u00e0 c\u00e1c t\u1ebf b\u00e0o nhi\u00ean li\u1ec7u m\u00e0ng, t\u1ea5t c\u1ea3 \u0111\u1ec1u c\u00f3 graphene ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc. C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n s\u1ebd ph\u1ea3i nghi\u00ean c\u1ee9u m\u1ed9t \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u ho\u00e0n to\u00e0n kh\u00e1c bi\u1ec7t, graphene kh\u00f4ng \u0111\u1ea9y n\u01b0\u1edbc m\u00e0 h\u00fat n\u01b0\u1edbc.<\/p>\n<p style=\"text-align: right;\"><em>(Vista)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tr\u00e1i v\u1edbi nh\u1eefng k\u1ebft lu\u1eadn tr\u01b0\u1edbc \u0111\u00e2y, graphene n\u1ed5i tr\u00ean m\u1eb7t n\u01b0\u1edbc nh\u01b0ng kh\u00f4ng \u0111\u1ea9y n\u01b0\u1edbc m\u00e0 thu h\u00fat n\u00f3. \u0110i\u1ec1u n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 h\u00f3a h\u1ecdc Liubov Belyaeva v\u00e0 Pauline van Deursen v\u00e0 Gr\u00e9gory F. Schneider ch\u1ee9ng minh, b\u00e1o c\u00e1o \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n tr\u00ean t\u1edd V\u1eadt li\u1ec7u ti\u00ean ti\u1ebfn. Graphene \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":7945,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-7944","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7944","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\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=7944"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7944\/revisions"}],"predecessor-version":[{"id":7947,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7944\/revisions\/7947"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/7945"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=7944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=7944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=7944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}