{"id":11158,"date":"2018-06-28T16:21:21","date_gmt":"2018-06-28T09:21:21","guid":{"rendered":"http:\/\/kientrucvui.com\/?p=11158"},"modified":"2018-06-28T16:21:21","modified_gmt":"2018-06-28T09:21:21","slug":"cac-nha-khoa-hoc-uc-lam-ra-loai-kim-cuong-cung-hon-ca-kim-cuong","status":"publish","type":"post","link":"https:\/\/kientrucvui.com\/home\/cac-nha-khoa-hoc-uc-lam-ra-loai-kim-cuong-cung-hon-ca-kim-cuong-11158.html","title":{"rendered":"C\u00e1c nh\u00e0 khoa h\u1ecdc \u00dac l\u00e0m ra lo\u1ea1i kim c\u01b0\u01a1ng c\u1ee9ng h\u01a1n c\u1ea3 kim c\u01b0\u01a1ng"},"content":{"rendered":"

Khi \u0111\u01b0\u1ee3c h\u1ecfi v\u1ec1 th\u1ee9 v\u1eadt li\u1ec7u g\u00ec c\u1ee9ng nh\u1ea5t qu\u1ea3 \u0110\u1ea5t, kh\u00f4ng \u00edt ng\u01b0\u1eddi ng\u1ea7n ng\u1ea1i tr\u1ea3 l\u1eddi r\u1eb1ng \u0111\u00f3 l\u00e0 kim c\u01b0\u01a1ng \u2013 th\u1ee9 \u0111\u00e1 tuy\u1ec7t \u0111\u1eb9p \u0111\u01b0\u1ee3c g\u1eafn tr\u00ean \u0111\u1ed3 trang s\u1ee9c c\u0169ng nh\u01b0 c\u00e1c m\u0169i khoan, l\u01b0\u1ee1i c\u01b0a c\u1ea7n s\u1ee9c c\u00f4ng ph\u00e1 l\u1edbn.<\/p>\n

Nhi\u1ec1u n\u0103m nay, c\u00e1c nh\u00e0 khoa h\u1ecdc v\u1eabn \u0111ang t\u00ecm c\u00e1ch \u0111\u1ec3 cho n\u00f3 c\u1ee9ng h\u01a1n n\u1eefa v\u00e0 gi\u1edd \u0111\u00e2y, \u0111\u1ed9i ng\u0169 c\u00e1c nh\u00e0 khoa h\u1ecdc t\u1ea1i \u00dac \u0111\u00e3 t\u1ea1o ra m\u1ed9t lo\u1ea1i kim c\u01b0\u01a1ng hi\u1ebfm c\u00f2n c\u1ee9ng h\u01a1n c\u1ea3 … kim c\u01b0\u01a1ng.<\/p>\n

\u0110\u00e2y l\u00e0 m\u1ed9t lo\u1ea1i kim c\u01b0\u01a1ng thu\u1ed9c nh\u00f3m kim c\u01b0\u01a1ng s\u00e1u ph\u01b0\u01a1ng\u00a0Lonsdaleit. Lo\u1ea1i v\u1eadt ch\u1ea5t n\u00e0y \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y t\u1ea1i trung t\u00e2m c\u1ee7a m\u1ed9t s\u1ed1 \u00edt nh\u1eefng h\u1ed1 thi\u00ean th\u1ea1ch xung quanh Tr\u00e1i \u0110\u1ea5t n\u00e0y. \u0110i\u1ec1u \u0111\u1eb7c bi\u1ec7t c\u1ee7a n\u00f3 n\u1eb1m \u1edf c\u1ea5u tr\u00fac tinh th\u1ec3 carbon \u0111\u01b0\u1ee3c x\u1ebfp th\u00e0nh c\u00e1c l\u01b0\u1edbi m\u1eaft c\u00e1o s\u00e1u c\u1ea1nh, trong khi c\u00e1c lo\u1ea1i kim c\u01b0\u01a1ng th\u00f4ng th\u01b0\u1eddng l\u1ea1i c\u00f3 c\u1ea5u tr\u00fac carbon x\u1ebfp th\u00e0nh l\u01b0\u1edbi m\u1eaft c\u00e1o h\u00ecnh kh\u1ed1i.<\/p>\n

Ch\u00ednh c\u1ea5u tr\u00fac tinh th\u1ec3 n\u00e0y \u0111\u00e3 khi\u1ebfn n\u00f3 c\u1ee9ng h\u01a1n kim c\u01b0\u01a1ng th\u01b0\u1eddng t\u1edbi 58%.<\/p>\n

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Tr\u01b0\u1edbc \u0111\u00e2y, Lonsdaleit ch\u1ec9 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y ngo\u00e0i t\u1ef1 nhi\u00ean theo c\u00e1ch v\u1eeba n\u00eau tr\u00ean nh\u01b0ng hi\u1ec7n t\u1ea1i, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 t\u1ea1o ra \u0111\u01b0\u1ee3c phi\u00ean b\u1ea3n k\u00edch c\u1ee1 nano c\u1ee7a Lonsdaleit trong ph\u00f2ng th\u00ed nghi\u1ec7m. Th\u1eadm ch\u00ed, theo nh\u01b0 t\u00ednh to\u00e1n s\u01a1 b\u1ed9 c\u1ee7a c\u00e1c nh\u00e0 khoa h\u1ecdc, th\u00ec phi\u00ean b\u1ea3n m\u1edbi c\u1ee7a Lonsdaleit n\u00e0y c\u00f2n c\u1ee9ng h\u01a1n c\u1ea3 phi\u00ean b\u1ea3n t\u1ef1 nhi\u00ean c\u1ee7a n\u00f3.<\/p>\n

\u0110\u1ed9 c\u1ee9ng c\u1ee7a lo\u1ea1i v\u1eadt ch\u1ea5t n\u00e0y \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u1ea3m b\u1ea3o tuy\u1ec7t \u0111\u1ed1i, t\u1edbi m\u1ee9c m\u00e0 h\u1ecd \u0111\u01b0a ra \u0111\u1ec1 ngh\u1ecb r\u1eb1ng c\u00e1c c\u00f4ng ty c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ngay Lonsdaleit trong c\u00e1c khu khai th\u00e1c m\u1ecf hi\u1ec7n nay. T\u1ea1i \u0111\u00f3, ti\u1ec1m n\u0103ng c\u1eaft xuy\u00ean c\u1ea3 nh\u1eefng v\u1eadt ch\u1ea5t c\u1ee9ng nh\u1ea5t c\u1ee7a n\u00f3 (k\u1ec3 c\u1ea3 kim c\u01b0\u01a1ng) s\u1ebd \u0111\u01b0\u1ee3c t\u1ed1i \u0111a h\u00f3a.<\/p>\n

\u201cC\u1ea5u tr\u00fac tinh th\u1ec3 s\u00e1u c\u1ea1nh c\u1ee7a nguy\u00ean t\u1eed trong lo\u1ea1i kim c\u01b0\u01a1ng n\u00e0y \u0111\u00e3 khi\u1ebfn n\u00f3 c\u1ee9ng h\u01a1n kim c\u01b0\u01a1ng th\u01b0\u1eddng r\u1ea5t nhi\u1ec1u l\u1ea7n<\/i>\u201d, tr\u01b0\u1edfng ban nghi\u00ean c\u1ee9u Jodie Bradby t\u1eeb \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia \u00dac n\u00f3i.<\/p>\n

\u201cCh\u00fang t\u00f4i c\u00f3 th\u1ec3 t\u1ea1o ra lo\u1ea1i kim c\u01b0\u01a1ng n\u00e0y \u1edf m\u1ee9c nano v\u00e0 th\u00f4ng th\u01b0\u1eddng, ch\u00fang ta c\u00f3 quy lu\u1eadt v\u1ec1 nh\u1eefng v\u1eadt ch\u1ea5t nh\u01b0 th\u1ebf n\u00e0y l\u00e0 \u2018c\u1ee9 nh\u1ecf h\u01a1n th\u00ec s\u1ebd c\u1ee9ng c\u00e1p m\u1ea1nh m\u1ebd h\u01a1n<\/i>\u2019\u201d.<\/p>\n

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L\u1ea7n \u0111\u1ea7u ti\u00ean lo\u1ea1i kim c\u01b0\u01a1ng si\u00eau c\u1ee9ng Lonsdaleit n\u00e0y \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n l\u00e0 \u1edf H\u1ebbm n\u00fai Diablo h\u1ed3i n\u0103m 1967, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 t\u1eebng c\u1ed1 g\u1eafng t\u00e1i t\u1ea1o lo\u1ea1i kim c\u01b0\u01a1ng n\u00e0y trong ph\u00f2ng th\u00ed nghi\u1ec7m nh\u01b0ng k\u1ebft qu\u1ea3 ch\u01b0a bao gi\u1edd kh\u1ea3 quan. Ch\u01b0a k\u1ec3 t\u1edbi th\u00e1ch th\u1ee9c s\u1ea3n xu\u1ea5t kh\u00f3 kh\u0103n trong c\u00e1ch th\u1ee9c tr\u01b0\u1edbc \u0111\u00e2y, \u0111\u00f3 l\u00e0 c\u1ea7n m\u1ed9t nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao, kho\u1ea3ng 1.000 \u0111\u1ed9 C \u0111\u1ec3 c\u00f3 th\u1ec3 \u0111\u1ea1t y\u00eau c\u1ea7u t\u1ea1o ra lo\u1ea1i kim c\u01b0\u01a1ng kia.<\/p>\n

Nh\u01b0ng l\u1ea7n n\u00e0y, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i \u00dac l\u1ea1i c\u00f3 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn v\u1ea5n \u0111\u1ec1 kh\u00e1c.<\/p>\n

H\u1ecd \u0111\u1eb7t carbon v\u00e0o m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 t\u00ean \u0111e kim c\u01b0\u01a1ng, l\u00e0m t\u1eeb hai m\u1ea3nh kim c\u01b0\u01a1ng \u00e9p v\u00e0o nhau \u0111\u1ec3 t\u1ea1o n\u00ean lo\u1ea1i \u00e1p l\u1ef1c cao m\u00e0 ta th\u01b0\u1eddng th\u1ea5y trong l\u00f2ng \u0111\u1ea5t.<\/p>\n

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\"\n\u0110e<\/div>\n
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\u0110e kim c\u01b0\u01a1ng.<\/p>\n<\/div>\n<\/div>\n

V\u1edbi thi\u1ebft b\u1ecb n\u00e0y, h\u1ecd t\u1ea1o ra \u0111\u01b0\u1ee3c kim c\u01b0\u01a1ng ch\u1ec9 v\u1edbi nhi\u1ec7t \u0111\u1ed9 400 \u0111\u1ed9 C, ch\u1ec9 g\u1ea7n m\u1ed9t n\u1eeda so v\u1edbi ph\u01b0\u01a1ng ph\u00e1p tr\u01b0\u1edbc \u0111\u00f3. \u0110I\u1ec1u n\u00e0y khi\u1ebfn cho ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t kim c\u01b0\u01a1ng r\u1ebb h\u01a1n, hi\u1ec7u qu\u1ea3 h\u01a1n v\u00e0 th\u1eadm ch\u00ed, s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng c\u1ee7a h\u1ecd c\u0169ng c\u1ee9ng c\u00e1p h\u01a1n n\u1eefa.<\/p>\n

Hi\u1ec7n t\u1ea1i, \u0111\u1ed9i ng\u0169 nghi\u00ean c\u1ee9u \u0111ang ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m xem \u0111\u1ed9 c\u1ee9ng c\u1ee7a lo\u1ea1i kim-c\u01b0\u01a1ng-c\u1ee9ng-h\u01a1n-kim-c\u01b0\u01a1ng n\u00e0y nhi\u1ec1u h\u01a1n bao nhi\u00eau so v\u1edbi nh\u1eefng v\u1eadt li\u1ec7u hi\u1ec7n t\u1ea1i. Nh\u01b0ng tr\u01b0\u1edbc m\u1eaft, ta c\u00f3 \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 r\u1eb1ng Lonsdaleit nh\u00e2n t\u1ea1o c\u1ee9ng h\u01a1n c\u1ea3 Lonsdaleit t\u1ef1 nhi\u00ean, m\u00e0 Lonsdaleit t\u1ef1 nhi\u00ean l\u1ea1i c\u1ee9ng h\u01a1n kim c\u01b0\u01a1ng th\u01b0\u1eddng, n\u00ean ta s\u1ebd c\u00f3 nh\u1eefng k\u1ebft qu\u1ea3 c\u1ef1c k\u00ec kh\u1ea3 quan.<\/p>\n

Tham kh\u1ea3o ScienceAler<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"

Khi \u0111\u01b0\u1ee3c h\u1ecfi v\u1ec1 th\u1ee9 v\u1eadt li\u1ec7u g\u00ec c\u1ee9ng nh\u1ea5t qu\u1ea3 \u0110\u1ea5t, kh\u00f4ng \u00edt ng\u01b0\u1eddi ng\u1ea7n ng\u1ea1i tr\u1ea3 l\u1eddi r\u1eb1ng \u0111\u00f3 l\u00e0 kim c\u01b0\u01a1ng \u2013 th\u1ee9 \u0111\u00e1 tuy\u1ec7t \u0111\u1eb9p \u0111\u01b0\u1ee3c g\u1eafn tr\u00ean \u0111\u1ed3 trang s\u1ee9c c\u0169ng nh\u01b0 c\u00e1c m\u0169i khoan, l\u01b0\u1ee1i c\u01b0a c\u1ea7n s\u1ee9c c\u00f4ng ph\u00e1 l\u1edbn. Nhi\u1ec1u n\u0103m nay, c\u00e1c nh\u00e0 khoa h\u1ecdc v\u1eabn…<\/p>\n","protected":false},"author":3,"featured_media":11159,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[2960],"class_list":["post-11158","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vat-lieu","tag-kim-cuong"],"yoast_head":"\nC\u00e1c nh\u00e0 khoa h\u1ecdc \u00dac l\u00e0m ra lo\u1ea1i kim c\u01b0\u01a1ng c\u1ee9ng h\u01a1n c\u1ea3 kim c\u01b0\u01a1ng<\/title>\n<meta name=\"description\" content=\"Ki\u1ebfn Tr\u00fac Vui: Thi\u1ebft k\u1ebf nh\u00e0 \u1edf, Bi\u1ec7t th\u1ef1, N\u1ed9i th\u1ea5t, T\u01b0 v\u1ea5n ki\u1ebfn tr\u00fac, D\u1ef1 to\u00e1n c\u00f4ng Tr\u00ecnh, Nh\u00e0 \u0111\u1eb9p H\u00e0 N\u1ed9i, B\u1eafc Ninh, B\u1eafc Giang, L\u1ea1ng S\u01a1n, Th\u00e1i Nguy\u00ean, V\u0129nh Ph\u00fac, H\u1ea3i D\u01b0\u01a1ng\" \/>\n<meta name=\"robots\" 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