{"id":6246976,"date":"2022-01-05T02:58:00","date_gmt":"2022-01-05T02:58:00","guid":{"rendered":"https:\/\/yp.vn\/?p=6246976"},"modified":"2022-01-05T10:04:44","modified_gmt":"2022-01-05T03:04:44","slug":"may-phat-dien-nho-nhat-the-gioi","status":"publish","type":"post","link":"https:\/\/yp.vn\/may-phat-dien-nho-nhat-the-gioi\/","title":{"rendered":"M\u00e1y ph\u00e1t \u0111i\u1ec7n nh\u1ecf nh\u1ea5t th\u1ebf gi\u1edbi"},"content":{"rendered":"

M\u1ed9t nh\u00f3m nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt t\u1eeb \u0110\u1ea1i h\u1ecdc Columbia v\u00e0 Vi\u1ec7n C\u00f4ng ngh\u1ec7 Georgia (Georgia Tech) \u0111\u00e3 ph\u00e1t tri\u1ec3n m\u00e1y ph\u00e1t \u0111i\u1ec7n<\/a> <\/em><\/strong>nh\u1ecf nh\u1ea5t v\u00e0 m\u1ecfng nh\u1ea5t m\u1ecdi th\u1eddi \u0111\u1ea1i: n\u00f3 c\u00f3 k\u00edch th\u01b0\u1edbc 5 x 10 microns (m\u1ed9t micro b\u1eb1ng m\u1ed9t ph\u1ea7n tri\u1ec7u m\u00e9t).<\/p>\n

\"\"<\/p>\n

\u00c1p \u0111i\u1ec7n l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng n\u1ed5i ti\u1ebfng gi\u1eefa c\u00e1c nh\u00e0 khoa h\u1ecdc: khi m\u1ed9t v\u1eadt li\u1ec7u gi\u00e3n ra ho\u1eb7c n\u00e9n l\u1ea1i, n\u00f3 s\u1ebd t\u1ea1o ra m\u1ed9t hi\u1ec7u \u0111i\u1ec7n th\u1ebf. T\u01b0\u01a1ng t\u1ef1, khi m\u1ed9t \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o, v\u1eadt li\u1ec7u n\u1edf ra ho\u1eb7c co l\u1ea1i. Tuy nhi\u00ean, hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y ch\u01b0a t\u1eebng \u0111\u01b0\u1ee3c quan s\u00e1t th\u1ef1c t\u1ebf tr\u01b0\u1edbc \u0111\u00e2y trong c\u00e1c v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 d\u00e0y nguy\u00ean t\u1eed th\u1ea5p; n\u00f3 m\u1edbi ch\u1ec9 \u0111\u01b0\u1ee3c ph\u1ecfng \u0111o\u00e1n d\u1ef1a tr\u00ean l\u00fd thuy\u1ebft.<\/p>\n

Nh\u00f3m nghi\u00ean c\u1ee9u t\u1eeb 2 t\u1ed5 ch\u1ee9c n\u00f3i tr\u00ean \u0111\u00e3 quan s\u00e1t v\u00e0 ch\u1ee9ng minh t\u00ednh \u00e1p \u0111i\u1ec7n hay qu\u00e1 tr\u00ecnh t\u1ea1o \u0111i\u1ec7n c\u01a1 h\u1ecdc trong m\u1ed9t v\u1eadt li\u1ec7u m\u1ecfng v\u1ec1 m\u1eb7t nguy\u00ean t\u1eed \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 molypden disulfide (MoS2). M\u1eb7c d\u00f9 n\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 \u00e1p \u0111i\u1ec7n \u1edf d\u1ea1ng kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn, nh\u01b0ng n\u00f3 c\u00f3 \u0111\u01b0\u1ee3c t\u00ednh ch\u1ea5t n\u00e0y khi b\u1ecb kh\u1eed th\u00e0nh nguy\u00ean t\u1eed m\u1ed9t l\u1edbp. N\u00f3i c\u00e1ch kh\u00e1c, n\u00f3 l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u ba chi\u1ec1u xu\u1ea5t hi\u1ec7n t\u1ef1 nhi\u00ean \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 molybdenit, kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra \u0111i\u1ec7n ngay c\u1ea3 khi c\u00f3 \u00e1p l\u1ef1c c\u01a1 h\u1ecdc. C\u00f4ng su\u1ea5t n\u00e0y ch\u1ec9 \u0111\u1ea1t \u0111\u01b0\u1ee3c khi n\u00f3 \u0111\u01b0\u1ee3c gi\u1ea3m xu\u1ed1ng hai chi\u1ec1u (MoS2).<\/p>\n

 <\/p>\n

\"\"<\/em><\/p>\n

\u00d4ng Wenzhuo Wu and Zhong Lin Wang c\u1ee7a Vi\u1ec7n C\u00f4ng ngh\u1ec7 Georgia<\/em>
\n\u1ea2nh: Rob Felt<\/em><\/p>\n

Do \u0111\u00f3, h\u1ecd \u0111\u00e3 c\u1ed1 g\u1eafng t\u1ea1o ra m\u1ed9t m\u00e1y ph\u00e1t \u0111i\u1ec7n<\/a> <\/strong><\/em>nano trong su\u1ed1t v\u1ec1 m\u1eb7t quang h\u1ecdc, c\u1ef1c k\u1ef3 nh\u1eb9 v\u00e0 linh ho\u1ea1t, c\u00f3 th\u1ec3 k\u00e9o d\u00e0i. M\u1ed9t b\u00e0i b\u00e1o v\u1ec1 d\u1ef1 \u00e1n \u0111\u00e3 \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n v\u00e0o ng\u00e0y 15 th\u00e1ng 10 tr\u00ean t\u1ea1p ch\u00ed Nature.<\/p>\n

C\u00e1c nh\u00e0 khoa h\u1ecdc nghi\u00ean c\u1ee9u t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u r\u1ea5t h\u00e0o h\u1ee9ng v\u1edbi molypden disulfide. James Hone, gi\u00e1o s\u01b0 K\u1ef9 thu\u1eadt C\u01a1 kh\u00ed t\u1ea1i Columbia v\u00e0 l\u00e0 \u0111\u1ed3ng tr\u01b0\u1edfng nh\u00f3m nghi\u00ean c\u1ee9u, cho bi\u1ebft \u201cCh\u00fang t\u00f4i mong mu\u1ed1n t\u1ea1o ra c\u00e1c thi\u1ebft b\u1ecb h\u1eefu \u00edch cho t\u1ea5t c\u1ea3 m\u1ecdi ng\u01b0\u1eddi\u201d. \u00d4ng cho bi\u1ebft th\u00eam, \u201cV\u1eadt li\u1ec7u n\u00e0y – ch\u1ec9 l\u00e0 nguy\u00ean t\u1eed m\u1ed9t l\u1edbp – c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o nh\u01b0 m\u1ed9t thi\u1ebft b\u1ecb \u0111eo, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o qu\u1ea7n \u00e1o, \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng t\u1eeb chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a c\u01a1 th\u1ec3 b\u1ea1n th\u00e0nh \u0111i\u1ec7n v\u00e0 cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho c\u00e1c c\u1ea3m bi\u1ebfn ho\u1eb7c thi\u1ebft b\u1ecb y t\u1ebf tr\u00ean ng\u01b0\u1eddi ho\u1eb7c c\u00f3 th\u1ec3 cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng \u0111\u1ee7 \u0111\u1ec3 s\u1ea1c \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng trong t\u00fai c\u1ee7a b\u1ea1n. \u201d<\/p>\n

\u201c\u0110\u00e2y l\u00e0 c\u00f4ng tr\u00ecnh th\u1eed nghi\u1ec7m \u0111\u1ea7u ti\u00ean trong l\u0129nh v\u1ef1c n\u00e0y v\u00e0 l\u00e0 m\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh v\u1ec1 vi\u1ec7c th\u1ebf gi\u1edbi tr\u1edf n\u00ean kh\u00e1c bi\u1ec7t nh\u01b0 th\u1ebf n\u00e0o khi k\u00edch th\u01b0\u1edbc c\u1ee7a v\u1eadt ch\u1ea5t thu nh\u1ecf l\u1ea1i b\u1eb1ng quy m\u00f4 c\u1ee7a m\u1ed9t nguy\u00ean t\u1eed. Hi\u1ec7n t\u1ea1i, n\u0103ng l\u01b0\u1ee3ng do c\u00e1c m\u00e1y ph\u00e1t \u0111i\u1ec7n si\u00eau nh\u1ecf n\u00e0y t\u1ea1o ra l\u00e0 r\u1ea5t h\u1ea1n ch\u1ebf, nh\u01b0ng c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111ang nghi\u00ean c\u1ee9u c\u00e1ch t\u0103ng ch\u00fang l\u00ean.<\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t nh\u00f3m nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt t\u1eeb \u0110\u1ea1i h\u1ecdc Columbia v\u00e0 Vi\u1ec7n C\u00f4ng ngh\u1ec7 Georgia (Georgia Tech) \u0111\u00e3 ph\u00e1t tri\u1ec3n m\u00e1y ph\u00e1t \u0111i\u1ec7n nh\u1ecf nh\u1ea5t v\u00e0 m\u1ecfng nh\u1ea5t m\u1ecdi th\u1eddi \u0111\u1ea1i: n\u00f3 c\u00f3 k\u00edch th\u01b0\u1edbc 5 x 10 microns (m\u1ed9t micro b\u1eb1ng m\u1ed9t ph\u1ea7n tri\u1ec7u m\u00e9t). \u00c1p \u0111i\u1ec7n l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng n\u1ed5i ti\u1ebfng gi\u1eefa… Xem b\u00e0i vi\u1ebft<\/a><\/p>\n","protected":false},"author":175,"featured_media":6246970,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ep_exclude_from_search":false,"footnotes":""},"categories":[2527,2467],"tags":[],"class_list":["post-6246976","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-may-phat-dien","category-tin-tuc"],"acf":[],"_links":{"self":[{"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/posts\/6246976","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/users\/175"}],"replies":[{"embeddable":true,"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/comments?post=6246976"}],"version-history":[{"count":0,"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/posts\/6246976\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/media\/6246970"}],"wp:attachment":[{"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/media?parent=6246976"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/categories?post=6246976"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/tags?post=6246976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}