{"id":7966,"date":"2023-07-17T14:55:21","date_gmt":"2023-07-17T06:55:21","guid":{"rendered":"https:\/\/www.huashu-tech.com\/?p=7966"},"modified":"2023-07-17T14:55:22","modified_gmt":"2023-07-17T06:55:22","slug":"how-to-create-nanowires-only-three-atoms-wide-with-an-electron-beam","status":"publish","type":"post","link":"https:\/\/www.huashu-tech.com\/vi\/how-to-create-nanowires-only-three-atoms-wide-with-an-electron-beam\/","title":{"rendered":"C\u00e1ch t\u1ea1o d\u00e2y nano ch\u1ec9 r\u1ed9ng ba nguy\u00ean t\u1eed b\u1eb1ng ch\u00f9m electron"},"content":{"rendered":"<p>Junhao Lin, Ti\u1ebfn s\u0129 \u0110\u1ea1i h\u1ecdc Vanderbilt. sinh vi\u00ean v\u00e0 nh\u00e0 khoa h\u1ecdc \u0111\u1ebfn th\u0103m t\u1ea1i Ph\u00f2ng th\u00ed nghi\u1ec7m qu\u1ed1c gia Oak Ridge (ORNL), \u0111\u00e3 t\u00ecm ra c\u00e1ch s\u1eed d\u1ee5ng ch\u00f9m electron t\u1eadp trung tinh vi \u0111\u1ec3 t\u1ea1o ra m\u1ed9t s\u1ed1 d\u00e2y nh\u1ecf nh\u1ea5t t\u1eebng \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o. C\u00e1c d\u00e2y kim lo\u1ea1i d\u1ebbo ch\u1ec9 c\u00f3 chi\u1ec1u r\u1ed9ng b\u1eb1ng ba nguy\u00ean t\u1eed: Chi\u1ec1u r\u1ed9ng b\u1eb1ng m\u1ed9t ph\u1ea7n ngh\u00ecn chi\u1ec1u r\u1ed9ng c\u1ee7a c\u00e1c d\u00e2y c\u1ef1c nh\u1ecf \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c b\u00f3ng b\u00e1n d\u1eabn trong c\u00e1c m\u1ea1ch t\u00edch h\u1ee3p ng\u00e0y nay.<\/p>\n<section class=\"article-banner first-banner ads-336x280\">\n<div id=\"div-gpt-ad-1449240174198-2\"><\/div>\n<\/section>\n<p>&nbsp;<\/p>\n<p>Th\u00e0nh t\u00edch c\u1ee7a Lin \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 trong b\u00e0i vi\u1ebft \u0111\u0103ng tr\u1ef1c tuy\u1ebfn ng\u00e0y 28\/4 c\u1ee7a t\u1ea1p ch\u00ed\u00a0<i>C\u00f4ng ngh\u1ec7 nano t\u1ef1 nhi\u00ean<\/i>. Theo c\u1ed1 v\u1ea5n c\u1ee7a \u00f4ng, Sokrates Pantelides, Gi\u00e1o s\u01b0 V\u1eadt l\u00fd v\u00e0 K\u1ef9 thu\u1eadt xu\u1ea5t s\u1eafc t\u1ea1i \u0110\u1ea1i h\u1ecdc Vanderbilt, v\u00e0 c\u00e1c c\u1ed9ng t\u00e1c vi\u00ean c\u1ee7a \u00f4ng t\u1ea1i ORNL, k\u1ef9 thu\u1eadt n\u00e0y th\u1ec3 hi\u1ec7n m\u1ed9t c\u00e1ch m\u1edbi th\u00fa v\u1ecb \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n v\u1eadt ch\u1ea5t \u1edf c\u1ea5p \u0111\u1ed9 nano v\u00e0 s\u1ebd th\u00fac \u0111\u1ea9y n\u1ed7 l\u1ef1c t\u1ea1o ra c\u00e1c m\u1ea1ch \u0111i\u1ec7n t\u1eed t\u1eeb \u0111\u01a1n l\u1edbp nguy\u00ean t\u1eed, h\u1ec7 s\u1ed1 d\u1ea1ng m\u1ecfng nh\u1ea5t c\u00f3 th\u1ec3 c\u00f3 c\u1ee7a v\u1eadt th\u1ec3 r\u1eafn.<\/p>\n<p>Pantelides n\u00f3i: \u201cJunhao \u0111\u00e3 nh\u1eadn d\u1ef1 \u00e1n n\u00e0y v\u00e0 th\u1ef1c s\u1ef1 th\u00e0nh c\u00f4ng.<\/p>\n<p>Lin \u0111\u00e3 t\u1ea1o ra nh\u1eefng s\u1ee3i d\u00e2y nh\u1ecf x\u00edu t\u1eeb m\u1ed9t h\u1ecd v\u1eadt li\u1ec7u b\u00e1n d\u1eabn \u0111\u1eb7c bi\u1ec7t t\u1ea1o th\u00e0nh c\u00e1c l\u1edbp \u0111\u01a1n m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 dichalcogenides kim lo\u1ea1i chuy\u1ec3n ti\u1ebfp (TMDC), \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c kim lo\u1ea1i molypden ho\u1eb7c vonfram v\u1edbi l\u01b0u hu\u1ef3nh ho\u1eb7c selen. Th\u00e0nh vi\u00ean n\u1ed5i ti\u1ebfng nh\u1ea5t c\u1ee7a h\u1ecd l\u00e0 molypden disulfide, m\u1ed9t lo\u1ea1i kho\u00e1ng ch\u1ea5t ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t b\u00f4i tr\u01a1n r\u1eafn.<\/p>\n<p>Ng\u00e0y nay, c\u00e1c l\u1edbp \u0111\u01a1n nguy\u00ean t\u1eed l\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c khoa h\u1ecdc quan t\u00e2m \u0111\u00e1ng k\u1ec3 v\u00ec ch\u00fang c\u00f3 xu h\u01b0\u1edbng c\u00f3 m\u1ed9t s\u1ed1 \u0111\u1eb7c t\u00ednh v\u01b0\u1ee3t tr\u1ed9i, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1ed9 b\u1ec1n v\u00e0 t\u00ednh linh ho\u1ea1t \u0111\u1eb7c bi\u1ec7t, \u0111\u1ed9 trong su\u1ed1t v\u00e0 \u0111\u1ed9 linh \u0111\u1ed9ng c\u1ee7a \u0111i\u1ec7n t\u1eed cao. M\u1ed1i quan t\u00e2m n\u00e0y \u0111\u01b0\u1ee3c kh\u01a1i d\u1eady v\u00e0o n\u0103m 2004 nh\u1edd vi\u1ec7c kh\u00e1m ph\u00e1 ra m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p d\u1ec5 d\u00e0ng \u0111\u1ec3 t\u1ea1o ra graphene, m\u1ed9t m\u1ea1ng l\u01b0\u1edbi t\u1ed5 ong c\u1ee1 nguy\u00ean t\u1eed g\u1ed3m c\u00e1c nguy\u00ean t\u1eed carbon \u0111\u00e3 th\u1ec3 hi\u1ec7n m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t ph\u00e1 k\u1ef7 l\u1ee5c, bao g\u1ed3m \u0111\u1ed9 b\u1ec1n, \u0111i\u1ec7n v\u00e0 d\u1eabn nhi\u1ec7t. B\u1ea5t ch\u1ea5p nh\u1eefng \u0111\u1eb7c t\u00ednh v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a graphene, c\u00e1c chuy\u00ean gia v\u1eabn g\u1eb7p kh\u00f3 kh\u0103n khi chuy\u1ec3n \u0111\u1ed5i ch\u00fang th\u00e0nh c\u00e1c thi\u1ebft b\u1ecb h\u1eefu \u00edch, m\u1ed9t qu\u00e1 tr\u00ecnh m\u00e0 c\u00e1c nh\u00e0 khoa h\u1ecdc v\u1eadt li\u1ec7u g\u1ecdi l\u00e0 ch\u1ee9c n\u0103ng h\u00f3a. V\u00ec v\u1eady, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 chuy\u1ec3n sang s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u \u0111\u01a1n l\u1edbp kh\u00e1c nh\u01b0 TMDC.<\/p>\n<figure class=\"mb-4\">\n<div class=\"embed-responsive embed-responsive-16by9\"><iframe class=\"embed-responsive-item\" src=\"https:\/\/www.youtube.com\/embed\/Yz6wPhANryA?color=white\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" data-mce-fragment=\"1\"><\/iframe><\/div>\n<\/figure>\n<p>C\u00e1c nh\u00f3m nghi\u00ean c\u1ee9u kh\u00e1c \u0111\u00e3 t\u1ea1o ra c\u00e1c b\u00f3ng b\u00e1n d\u1eabn ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u1ed5ng b\u1ed9 nh\u1edb flash t\u1eeb v\u1eadt li\u1ec7u TMDC. V\u00ec v\u1eady, vi\u1ec7c kh\u00e1m ph\u00e1 ra c\u00e1ch ch\u1ebf t\u1ea1o d\u00e2y d\u1eabn cung c\u1ea5p ph\u01b0\u01a1ng ti\u1ec7n \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c ph\u1ea7n t\u1eed c\u01a1 b\u1ea3n n\u00e0y. B\u00ean c\u1ea1nh c\u00e1c b\u00f3ng b\u00e1n d\u1eabn, h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n l\u00e0 m\u1ed9t trong nh\u1eefng ph\u1ea7n quan tr\u1ecdng nh\u1ea5t c\u1ee7a m\u1ea1ch t\u00edch h\u1ee3p. M\u1eb7c d\u00f9 ng\u00e0y nay\u00a0<a class=\"textTag\" href=\"https:\/\/phys.org\/tags\/integrated+circuits\/\" rel=\"tag\">m\u1ea1ch t\u00edch h\u1ee3p<\/a>\u00a0(chip) c\u00f3 k\u00edch th\u01b0\u1edbc b\u1eb1ng h\u00ecnh thu nh\u1ecf, ch\u00fang ch\u1ee9a h\u01a1n 20 d\u1eb7m d\u00e2y \u0111\u1ed3ng.<\/p>\n<div class=\"w-100 mb-4 ads\"><\/div>\n<p>Lin cho bi\u1ebft: \u201c\u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 s\u1ebd k\u00edch th\u00edch s\u1ef1 quan t\u00e2m nghi\u00ean c\u1ee9u r\u1ea5t l\u1edbn \u0111\u1ed1i v\u1edbi thi\u1ebft k\u1ebf m\u1ea1ch \u0111\u01a1n l\u1edbp\u201d. \u201cB\u1edfi v\u00ec k\u1ef9 thu\u1eadt n\u00e0y s\u1eed d\u1ee5ng s\u1ef1 chi\u1ebfu x\u1ea1 \u0111i\u1ec7n t\u1eed n\u00ean v\u1ec1 nguy\u00ean t\u1eafc n\u00f3 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng cho b\u1ea5t k\u1ef3 lo\u1ea1i thi\u1ebft b\u1ecb d\u1ef1a tr\u00ean \u0111i\u1ec7n t\u1eed n\u00e0o, ch\u1eb3ng h\u1ea1n nh\u01b0 quang kh\u1eafc ch\u00f9m tia \u0111i\u1ec7n t\u1eed.\u201d<\/p>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2014\/1-howtocreaten.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2014\/1-howtocreaten.jpg\" data-sub-html=\"Series of still scanning electron micrographs (a to d) show how the electron beam is used to create nanowires. Credit: Junhao Lin \/ Vanderbilt\">\n<figure class=\"article-img text-center\"><img title=\"Chu\u1ed7i \u1ea3nh vi m\u00f4 \u0111i\u1ec7n t\u1eed qu\u00e9t t\u0129nh (a \u0111\u1ebfn d) cho th\u1ea5y ch\u00f9m tia \u0111i\u1ec7n t\u1eed \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ea1o ra d\u00e2y nano. Ngu\u1ed3n: Junhao Lin \/ Vanderbilt\" src=\"https:\/\/www.huashu-tech.com\/wp-content\/uploads\/1-howtocreaten.jpg\" alt=\"How to create nanowires only three atoms wide with an electron beam\" \/><figcaption class=\"text-left text-darken text-truncate text-low-up mt-3\">Chu\u1ed7i \u1ea3nh vi m\u00f4 \u0111i\u1ec7n t\u1eed qu\u00e9t t\u0129nh (a \u0111\u1ebfn d) cho th\u1ea5y ch\u00f9m tia \u0111i\u1ec7n t\u1eed \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ea1o ra d\u00e2y nano. Ngu\u1ed3n: Junhao Lin \/ Vanderbilt<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<p>M\u1ed9t trong nh\u1eefng \u0111\u1eb7c t\u00ednh h\u1ea5p d\u1eabn c\u1ee7a m\u1ea1ch \u0111\u01a1n l\u1edbp l\u00e0 \u0111\u1ed9 b\u1ec1n v\u00e0 t\u00ednh linh ho\u1ea1t c\u1ee7a n\u00f3. C\u00f2n qu\u00e1 s\u1edbm \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n nh\u1eefng lo\u1ea1i \u1ee9ng d\u1ee5ng n\u00e0o n\u00f3 s\u1ebd t\u1ea1o ra, nh\u01b0ng \u201cN\u1ebfu b\u1ea1n \u0111\u1ec3 tr\u00ed t\u01b0\u1edfng t\u01b0\u1ee3ng c\u1ee7a m\u00ecnh bay b\u1ed5ng, b\u1ea1n c\u00f3 th\u1ec3 h\u00ecnh dung ra m\u00e1y t\u00ednh b\u1ea3ng v\u00e0 m\u00e0n h\u00ecnh tivi m\u1ecfng nh\u01b0 m\u1ed9t t\u1edd gi\u1ea5y m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 cu\u1ed9n l\u1ea1i v\u00e0 nh\u00e9t v\u00e0o t\u00fai ho\u1eb7c v\u00ed,\u201d Pantelides nh\u1eadn x\u00e9t.<\/p>\n<p>Ngo\u00e0i ra, Lin h\u00ecnh dung r\u1eb1ng k\u1ef9 thu\u1eadt m\u1edbi c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c m\u1ea1ch ba chi\u1ec1u b\u1eb1ng c\u00e1ch x\u1ebfp ch\u1ed3ng c\u00e1c l\u1edbp \u0111\u01a1n l\u1edbp \u201cnh\u01b0 c\u00e1c kh\u1ed1i Lego\u201d v\u00e0 s\u1eed d\u1ee5ng ch\u00f9m tia \u0111i\u1ec7n t\u1eed \u0111\u1ec3 ch\u1ebf t\u1ea1o c\u00e1c d\u00e2y k\u1ebft n\u1ed1i c\u00e1c l\u1edbp x\u1ebfp ch\u1ed3ng l\u00ean nhau.<\/p>\n<p>Vi\u1ec7c ch\u1ebf t\u1ea1o d\u00e2y nano \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i ORNL trong nh\u00f3m k\u00ednh hi\u1ec3n vi do Stephen J. Pennycook \u0111\u1ee9ng \u0111\u1ea7u cho \u0111\u1ebfn g\u1ea7n \u0111\u00e2y, nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a s\u1ef1 h\u1ee3p t\u00e1c Vanderbilt-ORNL \u0111ang di\u1ec5n ra, k\u1ebft h\u1ee3p k\u00ednh hi\u1ec3n vi v\u00e0 l\u00fd thuy\u1ebft \u0111\u1ec3 nghi\u00ean c\u1ee9u c\u00e1c h\u1ec7 v\u1eadt li\u1ec7u ph\u1ee9c t\u1ea1p. Junhao l\u00e0 m\u1ed9t nghi\u00ean c\u1ee9u sinh theo \u0111u\u1ed5i c\u1ea3 l\u00fd thuy\u1ebft v\u00e0 k\u00ednh hi\u1ec3n vi \u0111i\u1ec7n t\u1eed trong nghi\u00ean c\u1ee9u ti\u1ebfn s\u0129 c\u1ee7a m\u00ecnh. Ng\u01b0\u1eddi h\u01b0\u1edbng d\u1eabn k\u00ednh hi\u1ec3n vi ch\u00ednh c\u1ee7a \u00f4ng l\u00e0 \u0111\u1ed3ng nghi\u1ec7p c\u1ee7a ORNL Wigner, Wu Zhou.<\/p>\n<p>\u201cJunhao \u0111\u00e3 s\u1eed d\u1ee5ng m\u00e1y qu\u00e9t\u00a0<a class=\"textTag\" href=\"https:\/\/phys.org\/tags\/transmission+electron+microscope\/\" rel=\"tag\">k\u00ednh hi\u1ec3n vi \u0111i\u1ec7n t\u1eed truy\u1ec1n qua<\/a>\u00a0(STEM) c\u00f3 kh\u1ea3 n\u0103ng t\u1eadp trung m\u1ed9t ch\u00f9m electron xu\u1ed1ng \u0111\u1ed9 r\u1ed9ng n\u1eeda angstrom (kho\u1ea3ng m\u1ed9t n\u1eeda k\u00edch th\u01b0\u1edbc c\u1ee7a m\u1ed9t nguy\u00ean t\u1eed) v\u00e0 nh\u1eafm v\u00e0o ch\u00f9m tia n\u00e0y v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c tuy\u1ec7t v\u1eddi\u201d, Chu n\u00f3i.<\/p>","protected":false},"excerpt":{"rendered":"<p>Junhao Lin, a Vanderbilt University Ph.D. student and visiting scientist at Oak Ridge National Laboratory (ORNL), has found a way to use a finely focused beam of electrons to create some of the smallest wires ever made. The flexible metallic wires are only three atoms wide: One thousandth the width of the microscopic wires used<\/p>","protected":false},"author":1,"featured_media":7973,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/posts\/7966"}],"collection":[{"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/comments?post=7966"}],"version-history":[{"count":1,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/posts\/7966\/revisions"}],"predecessor-version":[{"id":7974,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/posts\/7966\/revisions\/7974"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/media\/7973"}],"wp:attachment":[{"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/media?parent=7966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/categories?post=7966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.huashu-tech.com\/vi\/wp-json\/wp\/v2\/tags?post=7966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}