{"id":13697,"date":"2022-11-21T17:43:38","date_gmt":"2022-11-21T17:43:38","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=13697"},"modified":"2022-11-21T17:43:38","modified_gmt":"2022-11-21T17:43:38","slug":"diy-invisibility-science-fiction-to-reality","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/vi\/science\/physics\/diy-invisibility-science-fiction-to-reality\/","title":{"rendered":"T\u00e0ng h\u00ecnh: T\u1eeb khoa h\u1ecdc vi\u1ec5n t\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7n th\u1ef1c"},"content":{"rendered":"<h2 class=\"wp-block-heading\">T\u00e0ng h\u00ecnh: T\u1eeb khoa h\u1ecdc vi\u1ec5n t\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7n th\u1ef1c<\/h2>\n\n<h3 class=\"wp-block-heading\">Cu\u1ed9c t\u00ecm ki\u1ebfm s\u1ef1 v\u00f4 h\u00ecnh<\/h3>\n\n<p>Trong nhi\u1ec1u th\u1ebf k\u1ef7, \u00fd t\u01b0\u1edfng v\u1ec1 s\u1ef1 v\u00f4 h\u00ecnh \u0111\u00e3 m\u00ea ho\u1eb7c tr\u00ed t\u01b0\u1edfng t\u01b0\u1ee3ng c\u1ee7a con ng\u01b0\u1eddi, truy\u1ec1n c\u1ea3m h\u1ee9ng cho v\u00f4 s\u1ed1 c\u00e2u chuy\u1ec7n v\u1ec1 \u0111i\u1ec7p vi\u00ean, si\u00eau anh h\u00f9ng v\u00e0 c\u00e1c sinh v\u1eadt huy\u1ec1n di\u1ec7u. Trong khi nh\u1eefng chi\u1ebfc \u00e1o cho\u00e0ng t\u00e0ng h\u00ecnh th\u1ef1c s\u1ef1 v\u1eabn c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t gi\u1ea5c m\u01a1 xa v\u1eddi, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c nh\u1eefng ti\u1ebfn b\u1ed9 \u0111\u00e1ng k\u1ec3 trong vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e1c v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 khi\u1ebfn c\u00e1c v\u1eadt th\u1ec3 tr\u1edf n\u00ean v\u00f4 h\u00ecnh \u0111\u1ed1i v\u1edbi m\u1eaft ng\u01b0\u1eddi.<\/p>\n\n<h3 class=\"wp-block-heading\">Khoa h\u1ecdc v\u1ec1 s\u1ef1 v\u00f4 h\u00ecnh<\/h3>\n\n<p>S\u1ef1 v\u00f4 h\u00ecnh ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch thao t\u00fang c\u00e1ch \u00e1nh s\u00e1ng t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c v\u1eadt th\u1ec3. Khi \u00e1nh s\u00e1ng chi\u1ebfu v\u00e0o m\u1ed9t v\u1eadt th\u1ec3, m\u1ed9t ph\u1ea7n \u00e1nh s\u00e1ng s\u1ebd b\u1ecb h\u1ea5p th\u1ee5, m\u1ed9t ph\u1ea7n s\u1ebd ph\u1ea3n x\u1ea1 v\u00e0 m\u1ed9t ph\u1ea7n s\u1ebd \u0111i qua v\u1eadt th\u1ec3. Chi\u1ebft su\u1ea5t c\u1ee7a m\u1ed9t v\u1eadt li\u1ec7u x\u00e1c \u0111\u1ecbnh \u00e1nh s\u00e1ng s\u1ebd b\u1ecb b\u1ebb cong nh\u01b0 th\u1ebf n\u00e0o khi \u0111i qua v\u1eadt li\u1ec7u \u0111\u00f3. B\u1eb1ng c\u00e1ch kh\u1edbp chi\u1ebft su\u1ea5t c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 v\u1edbi m\u00f4i tr\u01b0\u1eddng xung quanh, c\u00f3 th\u1ec3 khi\u1ebfn v\u1eadt th\u1ec3 tr\u1edf n\u00ean v\u00f4 h\u00ecnh.<\/p>\n\n<h3 class=\"wp-block-heading\">Si\u00eau v\u1eadt li\u1ec7u v\u00e0 quang h\u1ecdc bi\u1ebfn \u0111\u1ed5i<\/h3>\n\n<p>Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c v\u1eadt li\u1ec7u ti\u00ean ti\u1ebfn \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 si\u00eau v\u1eadt li\u1ec7u v\u00e0 quang h\u1ecdc bi\u1ebfn \u0111\u1ed5i c\u00f3 th\u1ec3 thao t\u00e1c \u00e1nh s\u00e1ng theo nh\u1eefng c\u00e1ch ch\u01b0a t\u1eebng c\u00f3. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y c\u00f3 th\u1ec3 b\u1ebb cong, h\u1ed9i t\u1ee5 v\u00e0 th\u1eadm ch\u00ed tri\u1ec7t ti\u00eau \u00e1nh s\u00e1ng, cho ph\u00e9p t\u1ea1o ra c\u00e1c thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 khi\u1ebfn c\u00e1c v\u1eadt th\u1ec3 tr\u1edf n\u00ean v\u00f4 h\u00ecnh.<\/p>\n\n<h3 class=\"wp-block-heading\">T\u00e0ng h\u00ecnh t\u1ef1 ch\u1ebf<\/h3>\n\n<p>M\u1eb7c d\u00f9 nh\u1eefng chi\u1ebfc \u00e1o cho\u00e0ng t\u00e0ng h\u00ecnh c\u00f4ng ngh\u1ec7 cao v\u1eabn \u0111ang \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n, nh\u01b0ng c\u00f3 m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n v\u00e0 kh\u00f4ng t\u1ed1n k\u00e9m \u0111\u1ec3 khi\u1ebfn c\u00e1c v\u1eadt th\u1ec3 nh\u1ecf tr\u1edf n\u00ean v\u00f4 h\u00ecnh t\u1ea1i nh\u00e0. K\u1ef9 thu\u1eadt n\u00e0y, \u0111\u01b0\u1ee3c ch\u1ee9ng minh b\u1edfi Ross Exton t\u1ea1i Trung t\u00e2m Khoa h\u1ecdc At-Bristol, bao g\u1ed3m vi\u1ec7c nh\u00fang v\u1eadt th\u1ec3 v\u00e0o ch\u1ea5t l\u1ecfng c\u00f3 chi\u1ebft su\u1ea5t kh\u1edbp v\u1edbi chi\u1ebft su\u1ea5t c\u1ee7a v\u1eadt th\u1ec3.<\/p>\n\n<h3 class=\"wp-block-heading\">Ch\u1ea5t l\u1ecfng v\u00e0 s\u1ef1 b\u1ebb cong \u00e1nh s\u00e1ng<\/h3>\n\n<p>C\u00e1c ch\u1ea5t l\u1ecfng kh\u00e1c nhau c\u00f3 chi\u1ebft su\u1ea5t kh\u00e1c nhau. V\u00ed d\u1ee5, n\u01b0\u1edbc c\u00f3 chi\u1ebft su\u1ea5t l\u00e0 1,33, trong khi glycerin c\u00f3 chi\u1ebft su\u1ea5t l\u00e0 1,47. B\u1eb1ng c\u00e1ch ch\u1ecdn ch\u1ea5t l\u1ecfng c\u00f3 chi\u1ebft su\u1ea5t ph\u00f9 h\u1ee3p, c\u00f3 th\u1ec3 khi\u1ebfn m\u1ed9t v\u1eadt th\u1ec3 bi\u1ebfn m\u1ea5t kh\u1ecfi t\u1ea7m nh\u00ecn.<\/p>\n\n<h3 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf<\/h3>\n\n<p>C\u00f4ng ngh\u1ec7 t\u00e0ng h\u00ecnh c\u00f3 ti\u1ec1m n\u0103ng cho nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, bao g\u1ed3m:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Qu\u00e2n s\u1ef1:<\/strong> \u00c1o cho\u00e0ng t\u00e0ng h\u00ecnh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ng\u1ee5y trang cho binh l\u00ednh v\u00e0 ph\u01b0\u01a1ng ti\u1ec7n, khi\u1ebfn ch\u00fang g\u1ea7n nh\u01b0 kh\u00f4ng th\u1ec3 b\u1ecb l\u1ef1c l\u01b0\u1ee3ng \u0111\u1ecbch ph\u00e1t hi\u1ec7n.<\/li>\n<li><strong>Y h\u1ecdc:<\/strong> C\u00e1c thi\u1ebft b\u1ecb v\u00f4 h\u00ecnh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c cu\u1ed9c ph\u1eabu thu\u1eadt \u00edt x\u00e2m l\u1ea5n, cho ph\u00e9p b\u00e1c s\u0129 th\u1ef1c hi\u1ec7n c\u00e1c th\u1ee7 thu\u1eadt m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i r\u1ea1ch l\u1edbn.<\/li>\n<li><strong>Gi\u1ea3i tr\u00ed:<\/strong> C\u00f4ng ngh\u1ec7 t\u00e0ng h\u00ecnh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra nh\u1eefng tr\u1ea3i nghi\u1ec7m nh\u1eadp vai v\u00e0 t\u01b0\u01a1ng t\u00e1c trong c\u00e1c c\u00f4ng vi\u00ean gi\u1ea3i tr\u00ed v\u00e0 b\u1ea3o t\u00e0ng.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">T\u01b0\u01a1ng lai c\u1ee7a s\u1ef1 v\u00f4 h\u00ecnh<\/h3>\n\n<p>L\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u v\u1ec1 s\u1ef1 v\u00f4 h\u00ecnh \u0111ang ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng, v\u1edbi c\u00e1c v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft b\u1ecb m\u1edbi li\u00ean t\u1ee5c \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n. M\u1eb7c d\u00f9 nh\u1eefng chi\u1ebfc \u00e1o cho\u00e0ng t\u00e0ng h\u00ecnh th\u1ef1c s\u1ef1 c\u00f3 th\u1ec3 v\u1eabn c\u00f2n v\u00e0i n\u0103m n\u1eefa, nh\u01b0ng nh\u1eefng ti\u1ebfn b\u1ed9 \u0111\u1ea1t \u0111\u01b0\u1ee3c cho \u0111\u1ebfn nay \u0111\u00e3 \u0111\u01b0a ch\u00fang ta \u0111\u1ebfn g\u1ea7n h\u01a1n v\u1edbi ng\u00e0y m\u00e0 ch\u00fang ta th\u1ef1c s\u1ef1 c\u00f3 th\u1ec3 bi\u1ebfn m\u1ea5t kh\u1ecfi t\u1ea7m m\u1eaft.<\/p>\n\n<h3 class=\"wp-block-heading\">Th\u00f4ng tin b\u1ed5 sung<\/h3>\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 khoa h\u1ecdc v\u1ec1 s\u1ef1 v\u00f4 h\u00ecnh, h\u00e3y truy c\u1eadp trang web c\u1ee7a Trung t\u00e2m Khoa h\u1ecdc At-Bristol: <a href=\"www.at-bristol.org.uk\/science-explained\/physics\/how-to-make-things-invisible\/\">www.at-bristol.org.uk\/science-explained\/physics\/how-to-make-things-invisible\/<\/a><\/li>\n<li>\u0110\u1ec3 xem cu\u1ed9c tr\u00ecnh di\u1ec5n v\u1ec1 s\u1ef1 v\u00f4 h\u00ecnh c\u1ee7a Ross Exton s\u1eed d\u1ee5ng ch\u1ea5t l\u1ecfng, h\u00e3y truy c\u1eadp video tr\u00ean YouTube: <a href=\"www.youtube.com\/watch?v=X5H-q2g_gWA\">www.youtube.com\/watch?v=X5H-q2g_gWA<\/a><\/li>\n<li>\u0110\u1ec3 t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 si\u00eau v\u1eadt li\u1ec7u v\u00e0 quang h\u1ecdc bi\u1ebfn \u0111\u1ed5i, h\u00e3y truy c\u1eadp c\u00e1c ngu\u1ed3n sau:\n<ul>\n<li><a href=\"https:\/\/www.sciencedirect.com\/topics\/engineering\/metamaterial\" rel=\"nofollow noopener\" target=\"_blank\">Si\u00eau v\u1eadt li\u1ec7u: https:\/\/www.sciencedirect.com\/topics\/engineering\/metamaterial<\/a><\/li>\n<li><a href=\"https:\/\/www.rp-photonics.com\/transformation_optics.html\" rel=\"nofollow noopener\" target=\"_blank\">Quang h\u1ecdc bi\u1ebfn \u0111\u1ed5i: https:\/\/www.rp-photonics.com\/transformation_optics.html<\/a><\/li>\n<\/ul><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>T\u00e0ng h\u00ecnh: T\u1eeb khoa h\u1ecdc vi\u1ec5n t\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7n th\u1ef1c Cu\u1ed9c t\u00ecm ki\u1ebfm s\u1ef1 v\u00f4 h\u00ecnh Trong nhi\u1ec1u th\u1ebf k\u1ef7, \u00fd t\u01b0\u1edfng v\u1ec1 s\u1ef1 v\u00f4 h\u00ecnh \u0111\u00e3 m\u00ea ho\u1eb7c tr\u00ed&hellip;<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[965],"tags":[97,157,99,18427,1761,16338,18426],"class_list":["post-13697","post","type-post","status-publish","format-standard","hentry","category-physics","tag-science","tag-science-fiction","tag-lifescienceart","tag-transformation-optics","tag-diy","tag-metamaterials","tag-invisibility"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/13697","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=13697"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/13697\/revisions"}],"predecessor-version":[{"id":13698,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/13697\/revisions\/13698"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=13697"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=13697"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=13697"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}