N\u1ebfu c\u00f3 ng\u01b0\u1eddi b\u1ea3o b\u1ea1n r\u1eb1ng, s\u1eaft t\u1ef1 ch\u00e1y trong kh\u00f4ng kh\u00ed, ch\u1eafc b\u1ea1n s\u1ebd kh\u00f4ng tin. S\u1ef1 th\u1ef1c l\u00e0 khi b\u1ea1n \u0111em \u0111inh s\u1eaft, d\u00e2y s\u1eaft \u0111\u1ed1t n\u00f3ng \u0111\u1ecf th\u00ec ch\u00fang c\u0169ng kh\u00f4ng h\u1ec1 b\u1ecb ch\u00e1y. Th\u1ebf nh\u01b0ng n\u1ebfu b\u1ea1n l\u1ea5y b\u1ed9t s\u1eaft v\u1eeba m\u1edbi kh\u1eed \u0111\u01b0a v\u00e0o ng\u1ecdn \u0111\u00e8n c\u1ed3n ho\u1eb7c l\u1eeda ng\u1ecdn, b\u1ed9t s\u1eaft s\u1ebd b\u1ed1c ch\u00e1y ngay v\u00e0 xung quanh ng\u1ecdn l\u1eeda s\u1ebd c\u00f3 c\u00e1c tia l\u1eeda b\u1eafn ra. Kh\u00f4ng ch\u1ec9 c\u00f3 th\u1ebf, c\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f2n c\u00f3 th\u1ec3 d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p ho\u00e1 h\u1ecdc ch\u1ebf t\u1ea1o \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ed9t s\u1eaft r\u1ea5t m\u1ecbn. Lo\u1ea1i b\u1ed9t s\u1eaft m\u1ecbn n\u00e0y c\u00f3 th\u1ec3 t\u1ef1 ch\u00e1y trong kh\u00f4ng kh\u00ed ngay \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p v\u00e0 b\u1eafn ra c\u00e1c tia l\u1eeda.<\/p>\n\n\n\n
Ngo\u00e0i s\u1eaft ra, c\u00e1c kim lo\u1ea1i nh\u01b0 ch\u00ec, niken th\u00f4ng th\u01b0\u1eddng kh\u00f4ng ch\u00e1y trong kh\u00f4ng kh\u00ed, nh\u01b0ng khi d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p ho\u00e1 h\u1ecdc \u0111\u1ec3 ch\u1ebf t\u1ea1o ra lo\u1ea1i b\u1ed9t m\u1ecbn c\u00e1c kim lo\u1ea1i ch\u00ec, niken c\u00f3 th\u1ec3 t\u1ef1 ch\u00e1y. Nh\u01b0 th\u1ebf ch\u1ee9ng t\u1ecf s\u1ef1 thay \u0111\u1ed5i to nh\u1ecf k\u00edch th\u01b0\u1edbc h\u1ea1t v\u1eadt ch\u1ea5t c\u0169ng c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u1ee7a v\u1eadt ch\u1ea5t. Ch\u00ednh v\u00ec l\u00fd do \u0111\u00f3 m\u00e0 v\u1eadt li\u1ec7u nanomet \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1edbi khoa h\u1ecdc ng\u00e0y nay h\u1ebft s\u1ee9c ch\u00fa \u00fd.<\/p>\n\n\n\n
Th\u1ebf n\u00e0o l\u00e0 v\u1eadt li\u1ec7u nanomet? Nanomet l\u00e0 \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i, 1 m\u00e9t c\u00f3 1000 milimet, 1 milimet c\u00f3 1000 micromet, 1 micromet c\u00f3 1000 nanomet. Do \u0111\u00f3 nanomet l\u00e0 \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i r\u1ea5t b\u00e9, b\u00e9 \u0111\u1ebfn kh\u00f3 t\u01b0\u1edfng t\u01b0\u1ee3ng n\u1ed5i. \u0110\u1ea1i \u0111a s\u1ed1 c\u00e1c lo\u1ea1i ph\u1ea5n th\u01b0\u1eddng c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee1 l\u1edbn h\u01a1n micromet. 1 micromet c\u00f3 th\u1ec3 b\u1eb1ng k\u00edch th\u01b0\u1edbc c\u1ee7a m\u1ea5y tr\u0103m tri\u1ec7u nguy\u00ean t\u1eed hay ph\u00e2n t\u1eed c\u1ed9ng l\u1ea1i, b\u1ea5y gi\u1edd v\u1eadt li\u1ec7u s\u1ebd th\u1ec3 hi\u1ec7n r\u00f5 t\u00ednh ch\u1ea5t c\u1ee7a ph\u00e2n t\u1eed. N\u1ebfu ta l\u1ea1i \u0111em c\u00e1c h\u1ea1t gia c\u00f4ng \u0111\u1ebfn k\u00edch th\u01b0\u1edbc c\u1ee1 nanomet th\u00ec s\u1ed1 ph\u00e2n t\u1eed hay nguy\u00ean t\u1eed trong h\u1ea1t c\u1ef1c b\u00e9 n\u00e0y s\u1ebd gi\u1ea3m nh\u1ecf \u0111i m\u1ea5y tr\u0103m tri\u1ec7u l\u1ea7n. N\u1ebfu d\u00f9ng v\u1eadt li\u1ec7u nh\u1ecf \u0111\u1ebfn c\u1ee1 h\u1ea1t n\u00e0y ta g\u1ecdi l\u00e0 v\u1eadt li\u1ec7u nanomet. N\u00ean v\u1eadt li\u1ec7u nanomet ch\u00ednh l\u00e0 v\u1eadt li\u1ec7u c\u00f3 c\u1ee1 h\u1ea1t si\u00eau m\u1ecbn.<\/p>\n\n\n\n
Do s\u1ed1 h\u1ea1t c\u1ee7a v\u1eadt li\u1ec7u nanomet t\u0103ng r\u1ea5t nhanh theo \u0111\u1ed9 to nh\u1ecf c\u1ee7a k\u00edch th\u01b0\u1edbc h\u1ea1t n\u00ean t\u1ed5ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t c\u1ee7a ch\u00fang r\u1ea5t l\u1edbn, l\u1edbn \u0111\u1ebfn m\u1ee9c \u0111\u1ea1t t\u1ec9 l\u1ec7 v\u00f4 c\u00f9ng l\u1edbn so v\u1edbi s\u1ed1 nguy\u00ean t\u1eed, th\u00f4ng th\u01b0\u1eddng c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ebfn tr\u00ean d\u01b0\u1edbi n\u1eeda s\u1ed1 nguy\u00ean t\u1eed. V\u00ec v\u1eady v\u1eadt li\u1ec7u nanomet h\u1ed9i \u0111\u1ee7 m\u1ecdi t\u00ednh ch\u1ea5t k\u1ef3 l\u1ea1 v\u1ec1 quang, \u0111i\u1ec7n, t\u1eeb, nhi\u1ec7t, l\u1ef1c v\u00e0 nhi\u1ec1u t\u00ednh ch\u1ea5t ho\u00e1 h\u1ecdc, kh\u00e1c nhi\u1ec1u so v\u1edbi v\u1eadt li\u1ec7u v\u0129 m\u00f4. V\u00ed d\u1ee5 nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y c\u1ee7a v\u00e0ng l\u00e0 1063\u00b0C, n\u1ebfu gia c\u00f4ng v\u00e0ng \u0111\u1ebfn k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee1 nanomet th\u00ec \u0111i\u1ec3m n\u00f3ng ch\u1ea3y c\u1ee7a v\u00e0ng l\u00fac \u0111\u00f3 s\u1ebd l\u00e0 330\u00b0C. Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y c\u1ee7a b\u1ea1c l\u00e0 961\u00b0C sau khi ch\u1ebf t\u1ea1o \u0111\u1ebfn c\u1ee1 h\u1ea1t nanomet s\u1ebd c\u00f3 nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y \u1edf 100\u00b0C. Th\u1ebf nh\u01b0ng n\u1ebfu ch\u1ea5t x\u00fac t\u00e1c gia c\u00f4ng \u0111\u1ebfn c\u1ee1 nanomet th\u00ec c\u00f3 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t r\u1ea5t l\u1edbn n\u00ean ho\u1ea1t t\u00ednh x\u00fac t\u00e1c s\u1ebd t\u0103ng l\u00ean nhi\u1ec1u l\u1ea7n, nhi\u1ec7t \u0111\u1ed9 x\u00fac t\u00e1c c\u00e1c ph\u1ea3n \u1ee9ng s\u1ebd gi\u1ea3m \u0111\u1ebfn m\u1ea5y tr\u0103m \u0111\u1ed9.<\/p>\n\n\n\n
S\u1ef1 xu\u1ea5t hi\u1ec7n v\u1eadt li\u1ec7u nanomet \u0111\u00e3 thu h\u00fat s\u1ef1 ch\u00fa \u00fd c\u1ee7a nhi\u1ec1u ng\u01b0\u1eddi. C\u00e1c nh\u00e0 khoa h\u1ecdc tin r\u1eb1ng trong th\u1ebf k\u1ef7 XXI ng\u01b0\u1eddi ta ch\u1eafc s\u1ebd t\u00ecm \u0111\u01b0\u1ee3c th\u00eam nhi\u1ec1u t\u00ednh ch\u1ea5t k\u1ef3 l\u1ea1 kh\u00e1c c\u1ee7a v\u1eadt li\u1ec7u nanomet.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: V\u1eadt li\u1ec7u nanomet.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
N\u1ebfu c\u00f3 ng\u01b0\u1eddi b\u1ea3o b\u1ea1n r\u1eb1ng, s\u1eaft t\u1ef1 ch\u00e1y trong kh\u00f4ng kh\u00ed, ch\u1eafc b\u1ea1n s\u1ebd kh\u00f4ng tin. S\u1ef1 th\u1ef1c l\u00e0 khi b\u1ea1n \u0111em \u0111inh s\u1eaft, d\u00e2y s\u1eaft \u0111\u1ed1t n\u00f3ng \u0111\u1ecf th\u00ec ch\u00fang c\u0169ng kh\u00f4ng h\u1ec1 b\u1ecb ch\u00e1y. Th\u1ebf nh\u01b0ng n\u1ebfu b\u1ea1n l\u1ea5y b\u1ed9t s\u1eaft v\u1eeba m\u1edbi kh\u1eed \u0111\u01b0a v\u00e0o ng\u1ecdn \u0111\u00e8n c\u1ed3n ho\u1eb7c l\u1eeda ng\u1ecdn, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[8,15],"tags":[],"class_list":["post-7908","post","type-post","status-publish","format-standard","hentry","category-hoa-hoc","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7908","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=7908"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7908\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7908"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7908"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}