{"id":5931,"date":"2017-06-16T18:53:42","date_gmt":"2017-06-16T11:53:42","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=5931"},"modified":"2017-10-03T11:03:26","modified_gmt":"2017-10-03T04:03:26","slug":"dang-moi-cua-cacbon-cung-nhu-da-nhung-dan-hoi-giong-cao-su","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/dang-moi-cua-cacbon-cung-nhu-da-nhung-dan-hoi-giong-cao-su\/","title":{"rendered":"D\u1ea1ng m\u1edbi c\u1ee7a cacbon: c\u1ee9ng nh\u01b0 \u0111\u00e1, nh\u01b0ng \u0111\u00e0n h\u1ed3i gi\u1ed1ng cao su"},"content":{"rendered":"

M\u1ed9t nh\u00f3m c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u1ebfn t\u1eeb Vi\u1ec7n Khoa h\u1ecdc Carnegie, Washington, Hoa K\u1ef3 v\u00e0 tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Yanshan, Trung Qu\u1ed1c v\u1eeba h\u1ee3p t\u00e1c ph\u00e1t tri\u1ec3n th\u00e0nh c\u00f4ng m\u1ed9t d\u1ea1ng cacbon si\u00eau c\u1ee9ng, si\u00eau nh\u1eb9, c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i v\u00e0 d\u1eabn \u0111i\u1ec7n cao. V\u1eadt li\u1ec7u m\u1edbi v\u1edbi s\u1ef1 k\u1ebft h\u1ee3p \u0111\u1ed9c \u0111\u00e1o c\u00e1c \u0111\u1eb7c t\u00ednh tr\u00ean \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 h\u1eefu \u00edch, c\u00f3 th\u1ec3 ph\u1ee5c v\u1ee5 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng t\u1eeb l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt h\u00e0ng kh\u00f4ng cho \u0111\u1ebfn s\u1ea3n xu\u1ea5t \u00e1o gi\u00e1p cho binh l\u00ednh trong qu\u00e2n \u0111\u1ed9i. B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 trong T\u1ea1p ch\u00ed Science Advances.<\/strong><\/p>\n

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Cacbon l\u00e0 m\u1ed9t nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc t\u1ed3n t\u1ea1i d\u01b0\u1edbi nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau v\u00e0 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng d\u01b0\u1eddng nh\u01b0 v\u00f4 h\u1ea1n. \u0110i\u1ec1u n\u00e0y l\u00e0 do c\u1ea5u h\u00ecnh c\u1ee7a n\u00f3 cho ph\u00e9p c\u00e1c electron nguy\u00ean t\u1eed kh\u1ea3 n\u0103ng t\u1ef1 li\u00ean k\u1ebft \u0111\u1ec3 t\u1ea1o th\u00e0nh m\u1ed9t lo\u1ea1t c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u v\u1edbi c\u00e1c t\u00ednh ch\u1ea5t kh\u00e1c nhau, c\u00f3 th\u1ec3 k\u1ec3 \u0111\u1ebfn: b\u1ea1ch kim, kim c\u01b0\u01a1ng si\u00eau c\u1ee9ng v\u00e0 graphite m\u1edd \u0111\u1ee5c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ng\u00e0nh c\u00f4ng nghi\u1ec7p s\u1ea3n xu\u1ea5t b\u00fat ch\u00ec v\u00e0 d\u1ea7u nh\u1eddn c\u00f4ng nghi\u1ec7p v\u1edbi h\u00e0m l\u01b0\u1ee3ng ch\u1ee7 y\u1ebfu l\u00e0 cacbon.<\/p>\n

Trong nghi\u00ean c\u1ee9u h\u1ee3p t\u00e1c gi\u1eefa hai tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Yanshan v\u00e0 Carnegie, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m gia t\u0103ng \u00e1p su\u1ea5t v\u00e0 \u0111\u1ed1t n\u00f3ng v\u1eadt li\u1ec7u cacbon th\u1ee7y tinh – d\u1ea1ng c\u1ea5u tr\u00fac g\u1ed3m c\u00e1c l\u1edbp graphene \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp ng\u1eabu nhi\u00ean. C\u1ee5 th\u1ec3, nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u1eb7t v\u1eadt li\u1ec7u n\u00e0y trong m\u00f4i tr\u01b0\u1eddng nh\u00e2n t\u1ea1o v\u1edbi s\u1ee9c \u00e9p l\u1edbn g\u1ea5p kho\u1ea3ng 250.000 l\u1ea7n so v\u1edbi \u00e1p su\u1ea5t c\u1ee7a b\u1ea7u kh\u00ed quy\u1ec3n, \u0111\u1ed3ng th\u1eddi, \u0111\u1ed1t n\u00f3ng v\u1eadt li\u1ec7u \u1edf m\u1ee9c nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng 1.800 \u0111\u1ed9 Fahrenheit \u0111\u1ec3 t\u1ea1o ra m\u1ed9t lo\u1ea1i cacbon si\u00eau m\u1ea1nh v\u00e0 c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i cao.<\/p>\n

Trong nhi\u1ec1u nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u01b0\u1edbc \u0111\u00f3, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 th\u1eed \u0111\u1eb7t v\u1eadt li\u1ec7u cacbon th\u1ee7y tinh trong m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t cao \u1edf c\u1ea3 2 m\u1ee9c nhi\u1ec7t \u0111\u1ed9: nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng \u0111\u01b0\u1ee3c n\u00e9n l\u1ea1nh v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao. Tuy nhi\u00ean, v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5ng h\u1ee3p trong m\u00f4i tr\u01b0\u1eddng n\u00e9n l\u1ea1nh kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng duy tr\u00ec c\u1ea5u tr\u00fac c\u1ee7a n\u00f3 khi quay tr\u1edf l\u1ea1i m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t xung quanh, c\u00f2n trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao, n\u00f3 tr\u1edf th\u00e0nh d\u1ea1ng cacbon ch\u1ee9a c\u1ea5u h\u00ecnh kim c\u01b0\u01a1ng tinh th\u1ec3 nano.<\/p>\n

V\u1eadt li\u00eau carbon m\u1edbi c\u00f3 c\u00e1c li\u00ean k\u1ebft gi\u1ed1ng c\u1ea3 graphene v\u00e0 kim c\u01b0\u01a1ng, \u0111\u1eb7c \u0111i\u1ec3m n\u00e0y l\u00e0m t\u0103ng t\u00ednh \u0111\u1ed9c \u0111\u00e1o c\u1ee7a s\u1ef1 k\u1ebft h\u1ee3p c\u00e1c t\u00ednh ch\u1ea5t. Trong qu\u00e1 tr\u00ecnh t\u1ed5ng h\u1ee3p d\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n \u00e1p su\u1ea5t cao, c\u00e1c l\u1edbp graphene \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp ng\u1eabu nhi\u00ean trong v\u1eadt li\u1ec7u cacbon th\u1ee7y tinh bi\u1ebfn \u0111\u1ed5i h\u00ecnh d\u1ea1ng, h\u1ee3p nh\u1ea5t v\u00e0 li\u00ean k\u1ebft theo nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau. Qu\u00e1 tr\u00ecnh n\u00e0y t\u1ea1o ra m\u1ed9t c\u1ea5u tr\u00fac t\u1ed5ng th\u1ec3 kh\u00f4ng tu\u00e2n theo tr\u1eadt t\u1ef1 kh\u00f4ng gian t\u1ea7m xa m\u00e0 tu\u00e2n theo c\u1ea5u tr\u00fac kh\u00f4ng gian t\u1ea7m xa \u1edf quy m\u00f4 nanomet.<\/p>\n

GS. Zhisheng Zhao – tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Yanshan gi\u1ea3i th\u00edch: “V\u1eadt li\u1ec7u m\u1edbi si\u00eau nh\u1eb9, c\u00f3 \u0111\u1ed9 b\u1ec1n cao v\u00e0 t\u00ednh \u0111\u00e0n h\u1ed3i t\u1ed1t nh\u01b0 th\u1ebf n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft v\u00e0 h\u1eefu \u00edch cho nhi\u1ec1u \u1ee9ng d\u1ee5ng trong \u0111\u00f3 y\u00eau c\u1ea7u v\u1ec1 y\u1ebfu t\u1ed1 ti\u1ebft ki\u1ec7m tr\u1ecdng l\u01b0\u1ee3ng th\u1eadm ch\u00ed c\u00f2n quan tr\u1ecdng h\u01a1n c\u1ea3 chi ph\u00ed v\u1eadt li\u1ec7u. H\u01a1n n\u1eefa, ch\u00fang t\u00f4i tin r\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng h\u1ee3p n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 t\u1ea1o ra nhi\u1ec1u d\u1ea1ng cacbon \u0111\u1eb7c bi\u1ec7t kh\u00e1c th\u1eadm ch\u00ed l\u00e0 c\u00e1c l\u1edbp v\u1eadt li\u1ec7u m\u1edbi ho\u00e0n to\u00e0n kh\u00e1c bi\u1ec7t”.<\/p>\n

P.K.L (NASATI)<\/em><\/p>\n

Ngu\u1ed3n Vista<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t nh\u00f3m c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u1ebfn t\u1eeb Vi\u1ec7n Khoa h\u1ecdc Carnegie, Washington, Hoa K\u1ef3 v\u00e0 tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Yanshan, Trung Qu\u1ed1c v\u1eeba h\u1ee3p t\u00e1c ph\u00e1t tri\u1ec3n th\u00e0nh c\u00f4ng m\u1ed9t d\u1ea1ng cacbon si\u00eau c\u1ee9ng, si\u00eau nh\u1eb9, c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i v\u00e0 d\u1eabn \u0111i\u1ec7n cao. V\u1eadt li\u1ec7u m\u1edbi v\u1edbi s\u1ef1 k\u1ebft h\u1ee3p \u0111\u1ed9c \u0111\u00e1o c\u00e1c \u0111\u1eb7c […]<\/p>\n","protected":false},"author":17,"featured_media":6529,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-5931","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\/5931","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\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=5931"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5931\/revisions"}],"predecessor-version":[{"id":6530,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5931\/revisions\/6530"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/6529"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=5931"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=5931"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=5931"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}