{"id":19321,"date":"2021-01-09T03:23:59","date_gmt":"2021-01-09T03:23:59","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=19321"},"modified":"2024-07-03T12:12:45","modified_gmt":"2024-07-03T05:12:45","slug":"dien-tro-suat-la-gi-tong-hop-kien-thuc-ve-dien-tro-suat","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=19321","title":{"rendered":"\u0110i\u1ec7n tr\u1edf su\u1ea5t l\u00e0 g\u00ec? T\u1ed5ng h\u1ee3p ki\u1ebfn th\u1ee9c v\u1ec1 \u0111i\u1ec7n tr\u1edf su\u1ea5t"},"content":{"rendered":"

\u0110i\u1ec7n tr\u1edf su\u1ea5t<\/strong> l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u1ea1i l\u01b0\u1ee3ng quan tr\u1ecdng v\u00e0 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ea5t nhi\u1ec1u trong cu\u1ed9c s\u1ed1ng. Th\u1ebf nh\u01b0ng, kh\u00f4ng ph\u1ea3i ai c\u0169ng bi\u1ebft \u0111i\u1ec7n tr\u1edf su\u1ea5t l\u00e0 g\u00ec c\u0169ng nh\u01b0 nh\u1eefng ki\u1ebfn th\u1ee9c li\u00ean quan \u0111\u1ebfn n\u00f3. Trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y, h\u00e3y c\u00f9ng H\u1ecdc vi\u1ec7n iT.vn t\u00ecm hi\u1ec3u chi ti\u1ebft v\u1ec1 \u0111i\u1ec7n tr\u1edf su\u1ea5t nh\u00e9.<\/span><\/p>\n

\n

Xem th\u00eam: <\/span>T\u1ed5ng h\u1ee3p ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 \u0111i\u1ec7n tr\u1edf \u2013 \u0110i\u1ec7n t\u1eed c\u0103n b\u1ea3n<\/span><\/a><\/span><\/p>\n<\/blockquote>\n

\"\u0110i\u1ec7n
\u0110i\u1ec7n tr\u1edf su\u1ea5t l\u00e0 g\u00ec? T\u1ed5ng h\u1ee3p ki\u1ebfn th\u1ee9c v\u1ec1 \u0111i\u1ec7n tr\u1edf su\u1ea5t<\/span><\/figcaption><\/figure>\n

\u0110i\u1ec7n tr\u1edf su\u1ea5t l\u00e0 g\u00ec?<\/strong><\/span><\/h2>\n

\u0110i\u1ec7n tr\u1edf su\u1ea5t l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng cho s\u1ef1 c\u1ea3n tr\u1edf d\u00f2ng \u0111i\u1ec7n theo chi\u1ec1u d\u00e0i v\u00e0 ti\u1ebft di\u1ec7n c\u1ee7a m\u1ed7i ch\u1ea5t. V\u1ec1 b\u1ea3n ch\u1ea5t, \u0111i\u1ec7n tr\u1edf su\u1ea5t ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng c\u1ea3n tr\u1edf s\u1ef1 d\u1ecbch chuy\u1ec3n theo h\u01b0\u1edbng c\u1ee7a c\u00e1c h\u1ea1t mang \u0111i\u1ec7n. Trong \u0111\u00f3, c\u00e1c v\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n (Ch\u1ea5t c\u00f3 t\u00ednh c\u1ea3n tr\u1edf d\u00f2ng \u0111i\u1ec7n l\u1edbn) th\u01b0\u1eddng c\u00f3 \u0111i\u1ec7n tr\u1edf su\u1ea5t cao, ng\u01b0\u1ee3c l\u1ea1i v\u1edbi c\u00e1c v\u1eadt li\u1ec7u d\u1eabn \u0111i\u1ec7n (Ch\u1ea5t d\u1ec5 d\u00e0ng cho d\u00f2ng \u0111i\u1ec7n truy\u1ec1n qua) c\u00f3 \u0111i\u1ec7n tr\u1edf su\u1ea5t th\u1ea5p. \u0110\u01a1n v\u1ecb c\u1ee7a \u0111i\u1ec7n tr\u1edf su\u1ea5t l\u00e0 Ohm.met (\u03a9.m).<\/span><\/p>\n

 <\/p>\n

C\u00f4ng th\u1ee9c t\u00ednh \u0111i\u1ec7n tr\u1edf su\u1ea5t<\/strong><\/span><\/h2>\n

\u0110i\u1ec7n tr\u1edf su\u1ea5t c\u1ee7a m\u1ed9t d\u00e2y d\u1eabn \u0111\u01b0\u1ee3c t\u00ednh theo c\u00f4ng th\u1ee9c sau:<\/span><\/p>\n

\u03c1 = R x S\/l<\/strong><\/span><\/p>\n

Trong \u0111\u00f3:<\/span><\/p>\n

\u03c1<\/strong> l\u00e0 \u0111i\u1ec7n tr\u1edf su\u1ea5t (\u03a9.m).<\/span><\/p>\n

R<\/strong> l\u00e0 \u0111i\u1ec7n tr\u1edf (\u03a9).<\/span><\/p>\n

S<\/strong> l\u00e0 ti\u1ebft di\u1ec7n (m2<\/sup>).<\/span><\/p>\n

l<\/strong> l\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a d\u00e2y d\u1eabn (m).<\/span><\/p>\n

Trong \u0111\u1ecbnh lu\u1eadt Ohm vi ph\u00e2n, \u0111i\u1ec7n tr\u1edf su\u1ea5t c\u00f2n \u0111\u01b0\u1ee3c t\u00ednh theo c\u00f4ng th\u1ee9c:<\/span><\/p>\n

\u03c1 = E\/J<\/strong><\/span><\/p>\n

Trong \u0111\u00f3:<\/span><\/p>\n

\u03c1<\/strong> l\u00e0 \u0111i\u1ec7n tr\u1edf su\u1ea5t (\u03a9.m).<\/span><\/p>\n

E<\/strong> l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 \u0111i\u1ec7n tr\u01b0\u1eddng.<\/span><\/p>\n

J<\/strong> l\u00e0 m\u1eadt \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n.<\/span><\/p>\n

Ngo\u00e0i ra, \u0111i\u1ec7n tr\u1edf su\u1ea5t c\u0169ng \u0111\u01b0\u1ee3c t\u00ednh theo c\u00f4ng th\u1ee9c:<\/span><\/p>\n

\u03c1 = 1\/\u03c3<\/strong><\/span><\/p>\n

Trong \u0111\u00f3:<\/span><\/p>\n

\u03c1<\/strong> l\u00e0 \u0111i\u1ec7n tr\u1edf su\u1ea5t (\u03a9.m).<\/span><\/p>\n

\u03c3<\/strong> l\u00e0 \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n.<\/span><\/p>\n

 <\/p>\n

S\u1ef1 ph\u1ee5 thu\u1ed9c c\u1ee7a \u0111i\u1ec7n tr\u1edf su\u1ea5t v\u1edbi nhi\u1ec7t \u0111\u1ed9<\/strong><\/span><\/h2>\n

Gi\u1eefa \u0111i\u1ec7n tr\u1edf su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u00f3 s\u1ef1 t\u01b0\u01a1ng quan kh\u00e1 l\u1edbn. Th\u00f4ng th\u01b0\u1eddng, \u0111i\u1ec7n tr\u1edf su\u1ea5t c\u1ee7a kim lo\u1ea1i t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi nhi\u1ec7t \u0111\u1ed9 (Nhi\u1ec7t \u0111\u1ed9 t\u0103ng th\u00ec \u0111i\u1ec7n tr\u1edf su\u1ea5t l\u1edbn). Ng\u01b0\u1ee3c l\u1ea1i, \u0111i\u1ec7n tr\u1edf su\u1ea5t c\u1ee7a c\u00e1c ch\u1ea5t b\u00e1n d\u1eabn t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi nhi\u1ec7t \u0111\u1ed9 (Nhi\u1ec7t \u0111\u1ed9 t\u0103ng th\u00ec \u0111i\u1ec7n tr\u1edf su\u1ea5t nh\u1ecf).<\/span><\/p>\n

Ngo\u00e0i s\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n tr\u1edf su\u1ea5t, n\u00f3 c\u00f2n ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi nh\u1eefng c\u01a1 ch\u1ebf t\u00e1n x\u1ea1 c\u1ee7a \u0111i\u1ec7n t\u1eed trong v\u1eadt li\u1ec7u (T\u00e1n x\u1ea1 tr\u00ean ph\u00f4n, t\u00e1n x\u1ea1 sai h\u1ecfng, t\u00e1n x\u1ea1 tr\u00ean spin) v\u00e0 m\u1eadt \u0111\u1ed9 \u0111i\u1ec7n t\u1eed t\u1ef1 do trong ch\u1ea5t\u2026<\/span><\/p>\n

 <\/p>\n

2 kh\u00e1i ni\u1ec7m li\u00ean quan \u0111\u1ebfn \u0111i\u1ec7n tr\u1edf su\u1ea5t<\/strong><\/span><\/h2>\n

T\u00edch c\u1ee7a \u0111i\u1ec7n tr\u1edf su\u1ea5t v\u1edbi m\u1eadt \u0111\u1ed9<\/span><\/h3>\n

M\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng quan tr\u1ecdng li\u00ean quan \u0111\u1ebfn \u0111i\u1ec7n tr\u1edf su\u1ea5t \u0111\u00f3 l\u00e0 t\u00edch c\u1ee7a \u0111i\u1ec7n tr\u1edf su\u1ea5t v\u1edbi m\u1eadt \u0111\u1ed9 (Hay c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u00edch \u0111i\u1ec7n tr\u1edf su\u1ea5t m\u1eadt \u0111\u1ed9). \u0110\u00e2y l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng c\u00f3 th\u1ec3 l\u00e0m cho d\u00e2y d\u1eabn \u0111i\u1ec7n to v\u00e0 d\u00e0y h\u01a1n \u0111\u1ec3 c\u00f3 \u0111i\u1ec7n tr\u1edf th\u1ea5p t\u01b0\u01a1ng \u0111\u01b0\u01a1ng. T\u1eeb \u0111\u00f3, n\u00f3 gi\u00fap ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn ch\u00ednh x\u00e1c ti\u1ebft di\u1ec7n c\u1ee7a d\u00e2y d\u1eabn.\u00a0<\/span><\/p>\n

C\u1ee5 th\u1ec3, m\u1ed9t v\u1eadt li\u1ec7u c\u00f3 t\u00edch c\u1ee7a \u0111i\u1ec7n tr\u1edf su\u1ea5t v\u1edbi nhi\u1ec7t \u0111\u1ed9 th\u1ea5p th\u00ec kh\u1ea3 n\u0103ng d\u1eabn \u0111i\u1ec7n v\u00e0 t\u00ednh \u1ee9ng d\u1ee5ng cao h\u01a1n. V\u00ed d\u1ee5 nh\u01b0 nh\u00f4m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa nhi\u1ec1u h\u01a1n so v\u1edbi \u0111\u1ed3ng m\u1eb7c d\u00f9 ch\u00fang c\u00f3 c\u00f9ng \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n nh\u01b0ng nh\u00f4m nh\u1eb9 h\u01a1n.<\/span><\/p>\n

\u0110i\u1ec7n tr\u1edf su\u1ea5t ph\u1ee9c<\/span><\/h3>\n

Tr\u1edf kh\u00e1ng su\u1ea5t (Su\u1ea5t tr\u1edf kh\u00e1ng) l\u00e0 t\u1ed5ng c\u1ee7a m\u1ed9t ph\u1ea7n th\u1ef1c (\u0110i\u1ec7n tr\u1edf su\u1ea5t) v\u1edbi m\u1ed9t ph\u1ea7n (\u0110i\u1ec7n kh\u00e1ng su\u1ea5t). \u0110\u1ed9 l\u1edbn c\u1ee7a su\u1ea5t tr\u1edf kh\u00e1ng l\u00e0 c\u0103n b\u1eadc hai c\u1ee7a t\u1ed5ng b\u00ecnh ph\u01b0\u01a1ng c\u00e1c \u0111\u1ed9 l\u1edbn c\u1ee7a \u0111i\u1ec7n tr\u1edf su\u1ea5t v\u00e0 \u0111i\u1ec7n kh\u00e1ng su\u1ea5t.<\/span><\/p>\n

Ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng tr\u1edf kh\u00e1ng su\u1ea5t \u0111\u1ec3 ph\u00e2n t\u00edch ph\u1ea3n \u1ee9ng c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u v\u1edbi c\u00e1c \u0111i\u1ec7n tr\u01b0\u1eddng xoay chi\u1ec1u trong m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng nh\u01b0 ch\u1ee5p c\u1eaft l\u1edbp tr\u1edf kh\u00e1ng (EIT).<\/span><\/p>\n

 <\/p>\n

B\u1ea3ng \u0111i\u1ec7n tr\u1edf su\u1ea5t c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u<\/strong><\/span><\/h2>\n
\"B\u1ea3ng
B\u1ea3ng \u0111i\u1ec7n tr\u1edf su\u1ea5t c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u<\/span><\/figcaption><\/figure>\n

Tr\u00ean \u0111\u00e2y l\u00e0 chia s\u1ebb c\u1ee7a H\u1ecdc vi\u1ec7n iT.vn v\u1ec1 nh\u1eefng ki\u1ebfn th\u1ee9c v\u1ec1 \u0111i\u1ec7n tr\u1edf su\u1ea5t. Hy v\u1ecdng nh\u1eefng ki\u1ebfn th\u1ee9c n\u00e0y c\u00f3 th\u1ec3 gi\u00fap \u00edch cho b\u1ea1n trong qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp v\u00e0 l\u00e0m vi\u1ec7c. N\u1ebfu c\u00f3 b\u1ea5t c\u1ee9 th\u1eafc m\u1eafc n\u00e0o th\u00ec h\u00e3y \u0111\u1ec3 l\u1ea1i b\u00ecnh lu\u1eadn ngay b\u00ean d\u01b0\u1edbi b\u00e0i vi\u1ebft n\u00e0y ho\u1eb7c inbox tr\u1ef1c ti\u1ebfp cho H\u1ecdc vi\u1ec7n iT.vn \u0111\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i \u0111\u00e1p t\u1ed1t nh\u1ea5t. Ch\u00fac b\u1ea1n th\u00e0nh c\u00f4ng!<\/span><\/p>\n

C\u00e1c b\u00e0i vi\u1ebft li\u00ean quan:<\/span><\/p>\n

T\u1ed5ng h\u1ee3p gi\u00e1 tr\u1ecb \u0111i\u1ec7n tr\u1edf v\u00e0 t\u1ee5 \u0111i\u1ec7n trong th\u1ef1c t\u1ebf<\/a><\/span><\/p>\n

\u0110i\u1ec7n tr\u1edf d\u00e2y cu\u1ed1n l\u00e0 g\u00ec? Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111i\u1ec7n tr\u1edf d\u00e2y cu\u1ed1n<\/a><\/span><\/p>\n

\u0110i\u1ec7n tr\u1edf film l\u00e0 g\u00ec? Ph\u00e2n lo\u1ea1i \u0111i\u1ec7n tr\u1edf film<\/a><\/span><\/p><\/blockquote>\n

M\u1ecdi chi ti\u1ebft xin vui l\u00f2ng li\u00ean h\u1ec7:
\n<\/i>C\u00d4NG TY C\u1ed4 PH\u1ea6N H\u1eccC VI\u1ec6N IT
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\n<\/strong>T\u1ed5ng \u0111\u00e0i h\u1ed7 tr\u1ee3: 024 3566 8686 \u2013 Hotline: 0981 223 001
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\nH\u1ec7 th\u1ed1ng c\u01a1 s\u1edf \u0111\u00e0o t\u1ea1o:\u00a0<\/b>https:\/\/hocvienit.vn\/lien-he\/<\/a>
\nH\u1ecdc vi\u1ec7n IT.vn \u2013 Truy\u1ec1n ngh\u1ec1 th\u1ef1c t\u1ebf c\u00f9ng b\u1ea1n \u0111\u1ebfn th\u00e0nh c\u00f4ng!\u00a0<\/i><\/strong><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

\u0110i\u1ec7n tr\u1edf su\u1ea5t l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u1ea1i l\u01b0\u1ee3ng quan tr\u1ecdng v\u00e0 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ea5t nhi\u1ec1u trong cu\u1ed9c s\u1ed1ng. Th\u1ebf nh\u01b0ng, kh\u00f4ng ph\u1ea3i ai c\u0169ng bi\u1ebft \u0111i\u1ec7n tr\u1edf su\u1ea5t l\u00e0 g\u00ec c\u0169ng nh\u01b0 nh\u1eefng ki\u1ebfn th\u1ee9c li\u00ean quan \u0111\u1ebfn n\u00f3. Trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y, h\u00e3y c\u00f9ng H\u1ecdc vi\u1ec7n iT.vn t\u00ecm hi\u1ec3u chi ti\u1ebft v\u1ec1 \u0111i\u1ec7n tr\u1edf su\u1ea5t nh\u00e9.<\/p>\n","protected":false},"author":95,"featured_media":19322,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[734],"tags":[245],"_links":{"self":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/19321"}],"collection":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/users\/95"}],"replies":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19321"}],"version-history":[{"count":0,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/19321\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/media\/19322"}],"wp:attachment":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}