{"id":4641,"date":"2015-12-07T11:11:59","date_gmt":"2015-12-07T04:11:59","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=4641"},"modified":"2017-10-02T09:50:58","modified_gmt":"2017-10-02T02:50:58","slug":"qua-trinh-luong-tu-lam-tang-dang-ke-nguon-nang-luong-khai-thac-tu-anh-nang-mat-troi","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/qua-trinh-luong-tu-lam-tang-dang-ke-nguon-nang-luong-khai-thac-tu-anh-nang-mat-troi\/","title":{"rendered":"Qu\u00e1 tr\u00ecnh l\u01b0\u1ee3ng t\u1eed l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng khai th\u00e1c t\u1eeb \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi"},"content":{"rendered":"

Ph\u01b0\u01a1ng ph\u00e1p m\u1edbi d\u1ef1a tr\u00ean ph\u00e1t hi\u1ec7n hi\u1ec7u \u1ee9ng l\u01b0\u1ee3ng t\u1eed \u0111\u1ea7y b\u1ea5t ng\u1edd l\u00e0m t\u0103ng s\u1ed1 l\u01b0\u1ee3ng c\u00e1c h\u1ea1t mang \u0111i\u1ec7n, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111i\u1ec7n t\u1eed v\u00e0 l\u1ed7, \u0111\u01b0\u1ee3c kho\u00e9t r\u1ed9ng khi c\u00e1c photon c\u1ee7a \u00e1nh s\u00e1ng c\u00f3 b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau chi\u1ebfu v\u00e0o b\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u1ea1 m\u1ed9t l\u1edbp v\u1eadt li\u1ec7u oxy \u0111\u1eb7c bi\u1ec7t g\u1ecdi l\u00e0 ch\u1ea5t \u0111i\u1ec7n m\u00f4i ch\u1ec9 s\u1ed1 cao. C\u00e1c photon t\u1ea1o ra plasma b\u1ec1 m\u1eb7t- \u0111\u00e1m m\u00e2y \u0111i\u1ec7n t\u1eed dao \u0111\u1ed9ng c\u00f3 c\u00f9ng t\u1ea7n s\u1ed1 v\u1edbi c\u00e1c photon b\u1ecb h\u1ea5p th\u1ee5<\/strong><\/p>\n

\"\"<\/p>\n

Trong nh\u00f3m t\u00e1c gi\u1ea3 c\u1ee7a nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c \u0111\u0103ng t\u1ea3i tr\u00ean t\u1ea1p ch\u00ed Physical Review Letters c\u00f3 Nicholas Fang, Ph\u00f3 GS. K\u1ef9 thu\u1eadt c\u01a1 v\u00e0 TS Dafei Jin. Nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 s\u1eed d\u1ee5ng m\u1ed9t t\u1ea5m b\u1ea1c tr\u00e1ng oxy c\u00f3 t\u00e1c d\u1ee5ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u00e1nh s\u00e1ng th\u00e0nh ph\u00e2n c\u1ef1c c\u00e1c nguy\u00ean t\u1eed t\u1ea1i b\u1ec1 m\u1eb7t ph\u00e2n c\u00e1ch.<\/p>\n

\u201cNghi\u00ean c\u1ee9u c\u1ee7a ch\u00fang t\u00f4i cho th\u1ea5y qu\u00e1 tr\u00ecnh h\u1ea5p th\u1ee5 \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c tr\u1ef1c ti\u1ebfp ki\u1ec3m so\u00e1t khi c\u00e1c \u0111i\u1ec7n t\u1eed tr\u00e0n qua b\u1ec1 m\u1eb7t ph\u00e2n c\u00e1ch gi\u1eefa kim lo\u1ea1i v\u00e0 ch\u1ea5t \u0111i\u1ec7n m\u00f4i\u201d<\/em>. M\u1ee9c \u0111\u1ed9 m\u1ea1nh c\u1ee7a hi\u1ec7u \u1ee9ng ph\u1ee5 thu\u1ed9c tr\u1ef1c ti\u1ebfp v\u00e0o h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i c\u1ee7a v\u1eadt li\u1ec7u- th\u01b0\u1edbc \u0111o v\u1ec1 hi\u1ec7u qu\u1ea3 c\u1ee7a vi\u1ec7c ng\u0103n ch\u1eb7n s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u00f2ng di\u1ec7n v\u00e0 chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng th\u00e0nh ph\u00e2n c\u1ef1c.<\/p>\n

\u201cTrong r\u1ea5t nhi\u1ec1u c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u tr\u01b0\u1edbc \u0111\u00e2y, th\u1ef1c t\u1ebf tr\u00ean \u0111\u00e3 kh\u00f4ng \u0111\u01b0\u1ee3c ch\u00fa \u00fd quan s\u00e1t\u201d.<\/em><\/p>\n

C\u00e1c th\u00ed nghi\u1ec7m tr\u01b0\u1edbc \u0111\u00e2y cho th\u1ea5y qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh c\u00e1c \u0111i\u1ec7n t\u1eed trong nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y \u0111\u00e3 g\u00e2y hao t\u1ed5n v\u00e0 m\u00e0i m\u00f2n v\u1eadt li\u1ec7u. Tuy nhi\u00ean, \u00f4ng cho bi\u1ebft c\u00e1c gi\u1ea3i th\u00edch n\u00e0y \u201cch\u01b0a \u0111\u1ee7 \u0111\u1ec3 l\u00fd gi\u1ea3i nguy\u00ean nh\u00e2n v\u00ec sao ch\u00fang t\u00f4i quan s\u00e1t th\u1ea5y s\u1ef1 h\u1ea5p th\u1ee5 b\u0103ng th\u00f4ng r\u1ed9ng n\u00e0y qua m\u1ed9t l\u1edbp v\u1eadt li\u1ec7u m\u1ecfng \u0111\u1ebfn nh\u01b0 v\u1eady\u201d<\/em>. Ngo\u00e0i ra, \u00f4ng c\u0169ng cho hay, th\u00ed nghi\u1ec7m c\u1ee7a nh\u00f3m c\u00f4ng nh\u1eadn hi\u1ec7u \u1ee9ng l\u01b0\u1ee3ng t\u1eed m\u1edbi ph\u00e1t hi\u1ec7n l\u00e0 l\u1eddi gi\u1ea3i th\u00edch cho qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u00e1c m\u1ea1nh m\u1ebd.<\/p>\n

Nh\u00f3m nghi\u00ean c\u1ee9u c\u0169ng ph\u00e1t hi\u1ec7n r\u1eb1ng b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i th\u00e0nh ph\u1ea7n v\u00e0 \u0111\u1ed3 d\u00e0y c\u1ee7a l\u1edbp v\u1eadt li\u1ec7u \u0111i\u1ec7n m\u00f4i (oxit nh\u00f4m, oxit hafni v\u00e0 oxit titani) l\u1eafng \u0111\u1ecdng tr\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u, h\u1ecd c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng b\u1ecb bi\u1ebfn \u0111\u1ed5i t\u1eeb photon \u0111\u1ebfn th\u00e0nh c\u00e1c c\u1eb7p \u0111i\u1ec7n t\u1eed v\u00e0 l\u1ed7 trong v\u1eadt li\u1ec7u – \u0111\u01b0\u1ee3c xem nh\u01b0 th\u01b0\u1edbc \u0111o hi\u1ec7u qu\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng trong vi\u1ec7c thu n\u0103ng l\u01b0\u1ee3ng \u00e1nh s\u00e1ng. B\u00ean c\u1ea1nh \u0111\u00f3, h\u1ec7 th\u1ed1ng n\u00e0yc\u0169ng cho ph\u00e9p h\u1ea5p th\u1ee5 m\u1ed9t lo\u1ea1t c\u00e1c b\u01b0\u1edbc s\u00f3ng, m\u00e0u s\u1eafc ho\u1eb7c \u00e1nh s\u00e1ng.<\/p>\n

Vi\u1ec7c khai th\u00e1c hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y kh\u00e1 \u0111\u01a1n gi\u1ea3n \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb h\u1eefu \u00edch b\u1edfi v\u00ec c\u00e1c v\u1eadt li\u1ec7u li\u00ean quan th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong quy m\u00f4 c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p. Con ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u oxit \u0111\u1ec3 t\u1ea1o ra ch\u1ea5t b\u00e1n d\u1eabn – hi\u1ec7n \u0111ang \u0111\u01b0\u1ee3c khai th\u00e1c hi\u1ec7u qu\u1ea3 \u0111\u1ec3 s\u1ea3n xu\u1ea5t pin m\u1eb7t tr\u1eddi v\u00e0 b\u1ed9 t\u00e1ch s\u00f3ng quang si\u00eau nhanh.<\/p>\n

Fang cho bi\u1ebft “Vi\u1ec7c b\u1ed5 sung l\u1edbp \u0111i\u1ec7n m\u00f4i th\u1ef1c s\u1ef1 \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 b\u1ea5t ng\u1edd, g\u00f3p ph\u1ea7n n\u00e2ng cao hi\u1ec7u qu\u1ea3 khai th\u00e1c \u00e1nh s\u00e1ng. Do pin m\u1eb7t tr\u1eddi s\u1ea3n xu\u1ea5t d\u1ef1a tr\u00ean nguy\u00ean l\u00fd n\u00e0y th\u01b0\u1eddng s\u1ebd r\u1ea5t m\u1ecfng, n\u00ean ng\u01b0\u1eddi ta s\u1ebd s\u1eed d\u1ee5ng \u00edt v\u1eadt li\u1ec7u h\u01a1n so v\u1edbi pin silicon th\u00f4ng th\u01b0\u1eddng\u201d.<\/em><\/p>\n

Do ph\u1ea3n \u1ee9ng b\u0103ng th\u00f4ng r\u1ed9ng, n\u00ean c\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y s\u1ebd ph\u1ea3n \u1ee9ng nhanh h\u01a1n v\u1edbi \u00e1nh s\u00e1ng \u0111\u1ebfn: \u201cCh\u00fang ta c\u00f3 th\u1ec3 thu nh\u1eadn hay ph\u00e1t hi\u1ec7n c\u00e1c t\u00edn hi\u1ec7u xung ng\u1eafn h\u01a1n so v\u1edbi khi s\u1eed d\u1ee5ng b\u1ed9 t\u00e1ch s\u00f3ng quang\u201d<\/em>, Fang n\u00f3i. \u0110i\u1ec1u n\u00e0y th\u1eadm ch\u00ed c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 ra \u0111\u1eddi c\u1ee7a h\u1ec7 th\u1ed1ng \u201cli-fi\u201d m\u1edbi, \u00f4ng c\u0169ng khuy\u1ebfn c\u00e1o n\u00ean s\u1eed d\u1ee5ng \u00e1nh s\u00e1ng \u0111\u1ec3 truy\u1ec1n v\u00e0 nh\u1eadn d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao.<\/p>\n

N. Asger Mortensen, gi\u00e1o s\u01b0 t\u1ea1i \u0110\u1ea1i h\u1ecdc K\u1ef9 thu\u1eadt \u0110an M\u1ea1ch l\u00e0 ng\u01b0\u1eddi kh\u00f4ng tham gia v\u00e0o nghi\u00ean c\u1ee9u, \u00f4ng cho bi\u1ebft ph\u00e1t hi\u1ec7n n\u00e0y “c\u00f3 \u00fd ngh\u0129a s\u00e2u s\u1eafc \u0111\u1ed1i v\u1edbi nh\u1eadn th\u1ee9c c\u1ee7a ch\u00fang ta v\u1ec1 plasmon l\u01b0\u1ee3ng t\u1eed. Nghi\u00ean c\u1ee9u c\u1ee7a MIT \u0111\u00e3 ch\u1ec9 ra th\u1ef1c t\u1ebf r\u1eb1ng plasmon b\u1ecb ph\u00e2n r\u00e3 th\u00e0nh c\u1eb7p \u0111i\u1ec7n t\u1eed – l\u1ed7 ngay s\u00e1t b\u1ec1 m\u1eb7t kim lo\u1ea1i”.<\/em><\/p>\n

Maiken Kikkelsen, ph\u00f3 gi\u00e1o s\u01b0 v\u1eadt l\u00fd t\u1ea1i \u0111\u1ea1i h\u1ecdc Duke kh\u00f4ng tham gia v\u00e0o c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u n\u00e0y, \u00f4ng nh\u1ea5n m\u1ea1nh \u201cVi\u1ec7c \u00e1p d\u1ee5ng th\u1eed nghi\u1ec7m nh\u1eefng hi\u1ec7u \u1ee9ng l\u01b0\u1ee3ng t\u1eed n\u00e0y r\u1ea5t ph\u1ee9c t\u1ea1p, c\u1ea3 v\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft v\u00e0 th\u1ef1c nghi\u1ec7m, ph\u00e1t hi\u1ec7n v\u1ec1 h\u1ea5p th\u1ee5 t\u0103ng c\u01b0\u1eddng d\u1ef1a tr\u00ean vi\u1ec7c hi\u1ec7u ch\u1ec9nh l\u01b0\u1ee3ng t\u1eed ch\u00ednh l\u00e0 m\u1ed9t b\u01b0\u1edbc nh\u1ea3y v\u1ecdt quan tr\u1ecdng. T\u00f4i cho r\u1eb1ng kh\u00f4ng c\u00f2n nghi ng\u1edd v\u1ec1 vi\u1ec7c khai th\u00e1c c\u00e1c \u0111\u1eb7c t\u00ednh l\u01b0\u1ee3ng t\u1eed c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u nano nh\u1ea5t \u0111\u1ecbnh s\u1ebd t\u1ea1o ra nhi\u1ec1u \u0111\u1ed9t ph\u00e1t c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai\u201d.<\/em><\/p>\n

P.K.L (Theo Physics.org)<\/em>
\n http:\/\/www.vista.gov.vn<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Ph\u01b0\u01a1ng ph\u00e1p m\u1edbi d\u1ef1a tr\u00ean ph\u00e1t hi\u1ec7n hi\u1ec7u \u1ee9ng l\u01b0\u1ee3ng t\u1eed \u0111\u1ea7y b\u1ea5t ng\u1edd l\u00e0m t\u0103ng s\u1ed1 l\u01b0\u1ee3ng c\u00e1c h\u1ea1t mang \u0111i\u1ec7n, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111i\u1ec7n t\u1eed v\u00e0 l\u1ed7, \u0111\u01b0\u1ee3c kho\u00e9t r\u1ed9ng khi c\u00e1c photon c\u1ee7a \u00e1nh s\u00e1ng c\u00f3 b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau chi\u1ebfu v\u00e0o b\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c m\u1ea1 m\u1ed9t l\u1edbp v\u1eadt li\u1ec7u […]<\/p>\n","protected":false},"author":17,"featured_media":5105,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-4641","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\/4641","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=4641"}],"version-history":[{"count":3,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4641\/revisions"}],"predecessor-version":[{"id":5106,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4641\/revisions\/5106"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/5105"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=4641"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=4641"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=4641"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}