Ch\u1ea5t c\u00e1ch nhi\u1ec7t nh\u01b0 b\u1ecdt nh\u1ef1a c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t th\u1ea5p.<\/li>\n<\/ul>\nHi\u1ec7u \u1ee9ng k\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1ed9 d\u1eabn nhi\u1ec7t \u1edf quy m\u00f4 nano<\/h2>\n
Khi c\u00e1c v\u1eadt li\u1ec7u chuy\u1ec3n sang k\u00edch th\u01b0\u1edbc nano (1 nanomet = 10-9<\/sup> m\u00e9t), c\u00e1c hi\u1ec7u \u1ee9ng b\u1ec1 m\u1eb7t v\u00e0 l\u01b0\u1ee3ng t\u1eed b\u1eaft \u0111\u1ea7u c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a ch\u00fang. M\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 ch\u00ednh g\u00f3p ph\u1ea7n v\u00e0o s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9 d\u1eabn nhi\u1ec7t \u1edf quy m\u00f4 nano bao g\u1ed3m:<\/p>\n\n- Hi\u1ec7u \u1ee9ng k\u00edch th\u01b0\u1edbc:<\/b> \u1ede quy m\u00f4 nano, k\u00edch th\u01b0\u1edbc c\u1ee7a h\u1ea1t ho\u1eb7c s\u1ee3i nh\u1ecf h\u01a1n \u0111\u01b0\u1eddng t\u1ef1 do c\u1ee7a phonon\u2014hay ch\u00ednh l\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng m\u00e0 c\u00e1c h\u1ea1t n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t c\u00f3 th\u1ec3 di chuy\u1ec3n m\u00e0 kh\u00f4ng va ch\u1ea1m. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 truy\u1ec1n nhi\u1ec7t.<\/li>\n
- Hi\u1ec7u \u1ee9ng b\u1ec1 m\u1eb7t:<\/b> T\u1ef7 l\u1ec7 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t so v\u1edbi th\u1ec3 t\u00edch t\u0103ng l\u00ean khi k\u00edch th\u01b0\u1edbc h\u1ea1t gi\u1ea3m, d\u1eabn \u0111\u1ebfn s\u1ef1 t\u0103ng c\u01b0\u1eddng vai tr\u00f2 c\u1ee7a b\u1ec1 m\u1eb7t trong vi\u1ec7c truy\u1ec1n nhi\u1ec7t.<\/li>\n
- Hi\u1ec7u \u1ee9ng l\u01b0\u1ee3ng t\u1eed:<\/b> \u1ede k\u00edch th\u01b0\u1edbc c\u1ef1c k\u1ef3 nh\u1ecf, c\u00e1c quy lu\u1eadt l\u01b0\u1ee3ng t\u1eed b\u1eaft \u0111\u1ea7u chi ph\u1ed1i h\u00e0nh vi c\u1ee7a c\u00e1c h\u1ea1t, thay \u0111\u1ed5i c\u00e1ch ch\u00fang t\u01b0\u01a1ng t\u00e1c v\u00e0 truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t.<\/li>\n<\/ul>\n
M\u00e1y t\u00ednh v\u00e0 m\u00f4 ph\u1ecfng<\/h2>\n
C\u00e1c nh\u00e0 khoa h\u1ecdc th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 m\u00e1y t\u00ednh v\u00e0 m\u00f4 ph\u1ecfng \u0111\u1ec3 hi\u1ec3u v\u00e0 d\u1ef1 \u0111o\u00e1n \u0111\u1ed9 d\u1eabn nhi\u1ec7t \u1edf k\u00edch th\u01b0\u1edbc nano. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y bao g\u1ed3m:<\/p>\n
\n- M\u00f4 ph\u1ecfng \u0111\u1ed9ng l\u1ef1c h\u1ecdc ph\u00e2n t\u1eed (Molecular Dynamics Simulations):<\/b> Cho ph\u00e9p quan s\u00e1t h\u00e0nh vi c\u1ee7a h\u00e0ng tri\u1ec7u nguy\u00ean t\u1eed trong m\u1ed9t th\u1eddi gian c\u1ef1c ng\u1eafn.<\/li>\n
- L\u00fd thuy\u1ebft BTE (Boltzmann Transport Equation):<\/b> D\u00f9ng \u0111\u1ec3 m\u00f4 t\u1ea3 s\u1ef1 ph\u00e2n b\u1ed1 v\u00e0 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a c\u00e1c h\u1ea1t n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t trong v\u1eadt li\u1ec7u.<\/li>\n<\/ul>\n
\u1ee8ng d\u1ee5ng c\u1ee7a \u0111\u1ed9 d\u1eabn nhi\u1ec7t \u1edf quy m\u00f4 nano<\/h2>\n
Hi\u1ec3u bi\u1ebft v\u1ec1 \u0111\u1ed9 d\u1eabn nhi\u1ec7t \u1edf quy m\u00f4 nano c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nhi\u1ec1u c\u1ea3i ti\u1ebfn v\u00e0 \u1ee9ng d\u1ee5ng thi\u1ebft th\u1ef1c nh\u01b0:<\/p>\n
\n- \u0110i\u1ec7n t\u1eed ti\u00eau t\u00e1n nhi\u1ec7t:<\/b> Vi\u1ec7c ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed si\u00eau nh\u1ecf gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a ch\u00fang.<\/li>\n
- V\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t th\u00f4ng minh:<\/b> Ph\u00e1t tri\u1ec3n c\u00e1c v\u1eadt li\u1ec7u m\u1edbi c\u00f3 kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t t\u1ed1t h\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng x\u00e2y d\u1ef1ng v\u00e0 c\u00f4ng nghi\u1ec7p.<\/li>\n
- Y h\u1ecdc:<\/b> C\u00e1c h\u1ea1t nano d\u1eabn nhi\u1ec7t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ti\u00eau di\u1ec7t t\u1ebf b\u00e0o ung th\u01b0 b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec7t li\u1ec7u ph\u00e1p.<\/li>\n<\/ol>\n
Nh\u00ecn chung, \u0111\u1ed9 d\u1eabn nhi\u1ec7t \u1edf quy m\u00f4 nano l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u \u0111\u1ea7y h\u1ee9a h\u1eb9n v\u00e0 th\u00fa v\u1ecb, m\u1edf ra nhi\u1ec1u c\u01a1 h\u1ed9i m\u1edbi trong c\u00f4ng ngh\u1ec7 v\u00e0 khoa h\u1ecdc.<\/p>\n","protected":false},"excerpt":{"rendered":"
\u0110\u1ed9 d\u1eabn nhi\u1ec7t \u1edf quy m\u00f4 nano: Gi\u1ea3i th\u00edch c\u01a1 b\u1ea3n v\u1ec1 c\u01a1 ch\u1ebf truy\u1ec1n nhi\u1ec7t trong c\u00e1c v\u1eadt li\u1ec7u \u1edf k\u00edch th\u01b0\u1edbc nano, \u1ee9ng d\u1ee5ng v\u00e0 th\u00e1ch th\u1ee9c trong c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"\n
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<\/p>\n