{"id":4583,"date":"2015-11-24T07:08:56","date_gmt":"2015-11-24T00:08:56","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=4583"},"modified":"2017-10-02T09:38:26","modified_gmt":"2017-10-02T02:38:26","slug":"da-tim-ra-cach-san-xuat-sieu-vat-lieu-graphene-voi-gia-re-hon-100-lan","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/da-tim-ra-cach-san-xuat-sieu-vat-lieu-graphene-voi-gia-re-hon-100-lan\/","title":{"rendered":"\u0110\u00e3 t\u00ecm ra c\u00e1ch s\u1ea3n xu\u1ea5t si\u00eau v\u1eadt li\u1ec7u graphene v\u1edbi gi\u00e1 r\u1ebb h\u01a1n 100 l\u1ea7n"},"content":{"rendered":"

\u0110i\u1ec1u duy nh\u1ea5t khi\u1ebfn graphene ch\u01b0a t\u1ea1o ra m\u1ed9t cu\u1ed9c c\u00e1ch m\u1ea1ng to\u00e0n di\u1ec7n l\u00e0 gi\u00e1 th\u00e0nh \u0111\u1eaft \u0111\u1ecf.<\/strong><\/p>\n

\"\"<\/p>\n

Ch\u00fang ta \u0111\u1ec1u \u0111\u00e3 bi\u1ebft, graphene \u0111\u01b0\u1ee3c m\u1ec7nh danh l\u00e0 si\u00eau v\u1eadt li\u1ec7u c\u1ee7a t\u01b0\u01a1ng lai. Ch\u1ec9 g\u1ed3m 1 l\u1edbp nguy\u00ean t\u1eed, c\u1ee9ng h\u01a1n 200 l\u1ea7n so v\u1edbi th\u00e9p, nh\u1eb9 v\u00e0 linh ho\u1ea1t, kh\u1ea3 n\u0103ng d\u1eabn \u0111i\u1ec7n v\u00e0 t\u1ea3i nhi\u1ec7t tuy\u1ec7t v\u1eddi, \u0111i\u1ec1u duy nh\u1ea5t khi\u1ebfn graphene ch\u01b0a \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 t\u1ea1o m\u1ed9t cu\u1ed9c c\u00e1ch m\u1ea1ng to\u00e0n di\u1ec7n \u0111\u00f3 l\u00e0 gi\u00e1 th\u00e0nh \u0111\u1eaft \u0111\u1ecf t\u1eeb chi ph\u00ed s\u1ea3n xu\u1ea5t.<\/p>\n

Tuy nhi\u00ean, ng\u00e0y m\u00e0 graphene xu\u1ea5t hi\u1ec7n \u1edf kh\u1eafp m\u1ecdi n\u01a1i c\u00f3 v\u1ebb \u0111ang \u0111\u1ebfn r\u1ea5t g\u1ea7n. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i \u0110\u1ea1i h\u1ecdc Glasgow, Scotland \u0111\u00e3 t\u00ecm ra c\u00e1ch \u0111\u1ec3 s\u1ea3n xu\u1ea5t nh\u1eefng t\u1ea5m graphene ch\u1ea5t l\u01b0\u1ee3ng cao v\u1edbi gi\u00e1 th\u00e0nh r\u1ebb h\u01a1n \u0111\u1ebfn 100 l\u1ea7n so v\u1edbi ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n th\u1ed1ng.<\/p>\n

Ng\u00e0y nay, graphene \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t ph\u1ed5 bi\u1ebfn th\u00f4ng qua ph\u01b0\u01a1ng ph\u00e1p l\u1eafng \u0111\u1ecdng pha h\u01a1i h\u00f3a h\u1ecdc (Chemical Vapour Deposition \u2013CVD). C\u00e1c ti\u1ec1n ch\u1ea5t h\u00f3a h\u1ecdc s\u1ebd \u0111\u01b0\u1ee3c h\u00f3a h\u01a1i \u1edf nhi\u1ec7t \u0111\u1ed9 cao, sau \u0111\u00f3 l\u1eafng \u0111\u1ecdng v\u00e0 ph\u1ea3n \u1ee9ng tr\u00ean b\u1ec1 m\u1eb7t m\u1ed9t v\u1eadt li\u1ec7u \u0111\u1ebf \u0111\u1ec3 t\u1ea1o ra l\u1edbp m\u00e0ng m\u1ecfng graphene.<\/p>\n

\u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ed9t m\u00e0ng graphene ch\u1ea5t l\u01b0\u1ee3ng cao b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, v\u1eadt li\u1ec7u \u0111\u1ebf s\u1eed d\u1ee5ng ph\u1ea3i \u0111\u1ea1t \u0111\u1ed9 m\u1ecbn l\u1edbn. \u0110\u00f3 l\u00e0 l\u00ed do t\u1ea1i sao ch\u1ec9 c\u00f3 c\u00e1c v\u1eadt li\u1ec7u \u0111\u1eaft \u0111\u1ecf \u0111\u01b0\u1ee3c ch\u1ecdn nh\u01b0 platin, niken ho\u1eb7c titan \u0111\u01b0\u1ee3c x\u1eed l\u00ed v\u1edbi \u0111\u1ed9 tinh khi\u1ebft cao. Chi ph\u00ed s\u1ea3n xu\u1ea5t d\u0129 nhi\u00ean tr\u1edf n\u00ean \u0111\u1eaft \u0111\u1ecf khi\u1ebfn ti\u1ec1m n\u0103ng \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i c\u1ee7a graphene b\u1ecb h\u1ea1n ch\u1ebf.
\nM\u1eb7c d\u00f9 \u0111\u1ea7u n\u0103m nay, m\u1ed9t nh\u00f3m c\u00e1c nh\u00e0 khoa h\u1ecdc Ba Lan \u0111\u00e3 b\u1eaft \u0111\u1ea7u s\u1eed d\u1ee5ng \u0111\u1ed3ng \u0111\u1ec3 l\u00e0m \u0111\u1ebf cho graphene. Tuy nhi\u00ean, \u0111\u1ebf \u0111\u1ed3ng m\u00e0 h\u1ecd s\u1eed d\u1ee5ng v\u1eabn ph\u1ea3i \u0111\u01b0\u1ee3c x\u1eed l\u00ed \u0111\u1ec3 \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng cao n\u00ean gi\u00e1 th\u00e0nh v\u1ec1 c\u01a1 b\u1ea3n kh\u00f4ng h\u1ec1 gi\u1ea3m.<\/p>\n

Thay v\u00e0o \u0111\u00f3, m\u1eb7c d\u00f9 c\u0169ng \u0111i theo h\u01b0\u1edbng ti\u1ebfp c\u1eadn vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u1ebf \u0111\u1ed3ng, c\u00e1c nh\u00e0 khoa h\u1ecdc t\u1ea1i \u0110\u1ea1i h\u1ecdc Glasgow l\u1ea1i l\u1ef1a ch\u1ecdn nh\u1eefng l\u00e1 \u0111\u1ed3ng ph\u1ed5 th\u00f4ng \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t quy m\u00f4 l\u1edbn \u0111\u1ec3 t\u1ea1o ra pin lithium-ion m\u00e0 ch\u00fang ta s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y.<\/p>\n

M\u1eb7c d\u00f9 kh\u00f4ng qua b\u1ea5t k\u1ef3 m\u1ed9t quy tr\u00ecnh x\u1eed l\u00fd n\u00e0o trong ph\u00f2ng th\u00ed nghi\u1ec7m, nh\u1eefng l\u00e1 \u0111\u1ed3ng n\u00e0y c\u0169ng \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 m\u1ecbn cho ph\u00e9p ch\u1ebf t\u1ea1o m\u1ed9t l\u1edbp \u0111\u01a1n nguy\u00ean t\u1eed graphene. Th\u1eadm ch\u00ed, \u1ea5n t\u01b0\u1ee3ng h\u01a1n n\u1eefa, qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m cho th\u1ea5y nh\u1eefng m\u00e0ng graphene v\u1edbi \u0111\u1ebf \u0111\u1ed3ng \u201cr\u1ebb ti\u1ec1n\u201d c\u00f2n th\u1ec3 hi\u1ec7n c\u00e1c t\u00ednh ch\u1ea5t quang \u0111i\u1ec7n t\u1ed1t h\u01a1n khi s\u1eed d\u1ee5ng \u0111\u1ebf t\u1eeb v\u1eadt li\u1ec7u \u0111\u1eaft \u0111\u1ecf.
\n\u201cNh\u1eefng \u0111\u1ebf \u0111\u1ed3ng th\u01b0\u01a1ng m\u1ea1i n\u00e0y \u0111\u01b0\u1ee3c b\u00e1n l\u1ebb v\u1edbi gi\u00e1 ch\u1ec9 1 USD m\u1ed7i m\u00e9t vu\u00f4ng. Trong khi \u0111\u00f3, m\u1ed9t \u0111\u1ebf \u0111\u1ed3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t graphene hi\u1ec7n t\u1ea1i c\u00f3 gi\u00e1 115 USD cho di\u1ec7n t\u00edch t\u01b0\u01a1ng t\u1ef1\u201d, Ravinda Dahiya, tr\u01b0\u1edfng nh\u00f3m nghi\u00ean c\u1ee9u cho bi\u1ebft. \u201c\u0110\u1ebf \u0111\u1ed3ng tr\u1edf n\u00ean \u0111\u1eaft \u0111\u1ecf ch\u1ee7 y\u1ebfu l\u00e0 do qu\u00e1 tr\u00ecnh x\u1eed l\u00fd v\u00e0 l\u00e0m s\u1ea1ch r\u1ea5t ph\u1ee9c t\u1ea1p\u201d.<\/p>\n

\u201cQu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t c\u1ee7a ch\u00fang t\u00f4i c\u00f3 th\u1ec3 t\u1ea1o ra v\u1eadt li\u1ec7u graphene v\u1edbi chi ph\u00ed th\u1ea5p m\u00e0 v\u1eabn \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng cao. N\u00f3 l\u00e0 m\u1ed9t b\u01b0\u1edbc ti\u1ebfn g\u1ea7n h\u01a1n \u0111\u1ebfn vi\u1ec7c t\u1ea1o ra c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed graphene v\u1edbi gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng. Ph\u1ea1m vi \u1ee9ng d\u1ee5ng s\u1ebd c\u1ef1c k\u00ec r\u1ed9ng l\u1edbn. Graphene l\u00e0 v\u1eadt li\u1ec7u kh\u00f4ng th\u1ec3 thi\u1ebfu t\u1eeb quy m\u00f4 m\u1ed9t th\u00e0nh ph\u1ed1 th\u00f4ng minh c\u1ee7a t\u01b0\u01a1ng lai cho \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe di \u0111\u1ed9ng\u201d, \u00f4ng n\u00f3i th\u00eam.
\nNh\u1eefng \u1ee9ng d\u1ee5ng \u0111\u1ea7u ti\u00ean c\u00f3 th\u1ec3 k\u1ec3 \u0111\u1ebfn khi nh\u1eefng t\u1ea5m graphene n\u00e0y \u0111\u01b0\u1ee3c th\u01b0\u01a1ng m\u1ea1i h\u00f3a \u0111\u00f3 l\u00e0 ch\u1ebf t\u1ea1o b\u1ed9 l\u1ecdc c\u00f4ng ngh\u1ec7 cao v\u00e0 thi\u1ebft b\u1ecb y t\u1ebf. V\u1ec1 ph\u1ea7n nh\u00f3m nghi\u00ean c\u1ee9u, Dahiya n\u00f3i \u201cCh\u00fang t\u00f4i ch\u00fa tr\u1ecdng v\u00e0 \u0111\u1eb7c bi\u1ec7t quan t\u00e2m \u0111\u1ebfn l\u0129nh v\u1ef1c da nh\u00e2n t\u1ea1o t\u1ed5ng h\u1ee3p. Graphene c\u00f3 th\u1ec3 cung c\u1ea5p m\u1ed9t b\u1ec1 m\u1eb7t d\u1eabn \u0111i\u1ec7n linh ho\u1ea1t gi\u00fap ng\u01b0\u1eddi s\u1eed d\u1ee5ng ch\u00e2n tay gi\u1ea3 c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng x\u00fac gi\u00e1c. Ph\u00e1t hi\u1ec7n m\u1edbi v\u1ec1 \u0111\u1ebf \u0111\u1ed3ng r\u1ea5t c\u00f3 \u00fd ngh\u0129a, ch\u00fang t\u00f4i s\u1ebd ti\u1ebfp t\u1ee5c nghi\u00ean c\u1ee9u s\u00e2u h\u01a1n n\u1eefa\u201d.<\/p>\n

Tham kh\u1ea3o Sciencealert<\/em><\/strong><\/p>\n

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

\u0110i\u1ec1u duy nh\u1ea5t khi\u1ebfn graphene ch\u01b0a t\u1ea1o ra m\u1ed9t cu\u1ed9c c\u00e1ch m\u1ea1ng to\u00e0n di\u1ec7n l\u00e0 gi\u00e1 th\u00e0nh \u0111\u1eaft \u0111\u1ecf. Ch\u00fang ta \u0111\u1ec1u \u0111\u00e3 bi\u1ebft, graphene \u0111\u01b0\u1ee3c m\u1ec7nh danh l\u00e0 si\u00eau v\u1eadt li\u1ec7u c\u1ee7a t\u01b0\u01a1ng lai. Ch\u1ec9 g\u1ed3m 1 l\u1edbp nguy\u00ean t\u1eed, c\u1ee9ng h\u01a1n 200 l\u1ea7n so v\u1edbi th\u00e9p, nh\u1eb9 v\u00e0 linh ho\u1ea1t, kh\u1ea3 n\u0103ng d\u1eabn […]<\/p>\n","protected":false},"author":17,"featured_media":5069,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-4583","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\/4583","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=4583"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4583\/revisions"}],"predecessor-version":[{"id":5070,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4583\/revisions\/5070"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/5069"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=4583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=4583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=4583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}