{"id":5914,"date":"2017-05-29T18:49:55","date_gmt":"2017-05-29T11:49:55","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=5914"},"modified":"2017-10-03T11:06:46","modified_gmt":"2017-10-03T04:06:46","slug":"loa-micro-sieu-mong-tao-ra-nang-luong-tu-chuyen-dong","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/loa-micro-sieu-mong-tao-ra-nang-luong-tu-chuyen-dong\/","title":{"rendered":"Loa Micro si\u00eau m\u1ecfng t\u1ea1o ra n\u0103ng l\u01b0\u1ee3ng t\u1eeb chuy\u1ec3n \u0111\u1ed9ng"},"content":{"rendered":"<p><strong>C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u1edf \u0110\u1ea1i h\u1ecdc bang Michigan \u0111\u00e3 ph\u00e1t tri\u1ec3n m\u1ed9t thi\u1ebft b\u1ecb d\u1ea1ng t\u1ea5m, \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nh\u01b0 l\u00e0 b\u1ed9 ph\u00e1t nano ferroelectret ho\u1eb7c FENG, ho\u1ea1t \u0111\u1ed9ng nh\u01b0 loa v\u00e0 micro v\u00e0 c\u00f3 th\u1ec3 t\u1ea1o ra n\u0103ng l\u01b0\u1ee3ng t\u1eeb chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a con ng\u01b0\u1eddi, ch\u1eb3ng h\u1ea1n nh\u01b0 vu\u1ed1t ng\u00f3n tay tr\u00ean m\u00e0n h\u00ecnh.<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-6539\" src=\"http:\/\/ttud.com.vn\/wp-content\/uploads\/2017\/05\/29052017140539-baotran5.png\" alt=\"\" width=\"400\" height=\"266\" srcset=\"https:\/\/casta.ttud.com.vn\/wp-content\/uploads\/2017\/05\/29052017140539-baotran5.png 400w, https:\/\/casta.ttud.com.vn\/wp-content\/uploads\/2017\/05\/29052017140539-baotran5-300x200.png 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p>T\u00e1c gi\u1ea3 nghi\u00ean c\u1ee9u, Nelson Sepulveda \u2013 Gi\u00e1o s\u01b0 v\u1ec1 k\u1ef9 thu\u1eadt \u0111i\u1ec7n v\u00e0 m\u00e1y t\u00ednh t\u1ea1i \u0110\u1ea1i h\u1ecdc bang Michigan, cho bi\u1ebft: &#8220;\u0110\u00e2y l\u00e0 thi\u1ebft b\u1ecb m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 cu\u1ed9n l\u00ean v\u00e0 b\u1ecf v\u00e0o t\u00fai v\u00e0 khi \u0111i \u0111\u00e2u \u0111\u00f3 c\u00f3 th\u1ec3 m\u1edf ra v\u00e0 \u0111\u1eb7t n\u00f3 l\u00ean m\u00e0n h\u00ecnh ho\u1eb7c c\u1eeda s\u1ed5 ho\u1eb7c b\u1ea5t k\u1ef3 n\u1ec1n t\u1ea3ng n\u00e0o, sau \u0111\u00f3 s\u1eed d\u1ee5ng n\u00f3 nh\u01b0 m\u1ed9t microphone v\u00e0 loa\u201d. Cu\u1ed1i th\u00e1ng 12\/2016, Nelson Sepulveda v\u00e0 nh\u00f3m c\u1ee7a \u00f4ng \u0111\u00e3 gi\u1edbi thi\u1ec7u chi ti\u1ebft c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a thi\u1ebft b\u1ecb n\u00e0y tr\u00ean t\u1ea1p ch\u00ed Nano Energy. V\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u cho th\u1ea5y m\u00e0ng m\u1ecfng c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t ra \u0111i\u1ec7n t\u1eeb chuy\u1ec3n \u0111\u1ed9ng. N\u00f3 c\u00f3 th\u00eam l\u1ee3i \u00edch l\u00e0m t\u0103ng \u0111i\u1ec7n \u00e1p theo c\u1ea5p s\u1ed1 nh\u00e2n m\u1ed7i khi n\u00f3 \u0111\u01b0\u1ee3c x\u1ebfp l\u1ea1i.<\/p>\n<p>Nghi\u00ean c\u1ee9u m\u1edbi nh\u1ea5t n\u00e0y d\u1ef1a tr\u00ean kh\u1ea3 n\u0103ng \u0111\u00f3. Thi\u1ebft b\u1ecb n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 microphone, thu nh\u1ecbp rung trong kh\u00f4ng kh\u00ed (n\u00f3i c\u00e1ch kh\u00e1c l\u00e0 s\u00f3ng \u00e2m) v\u00e0 chuy\u1ec3n ch\u00fang th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n. V\u00ed d\u1ee5, n\u00f3 bi\u1ebfn t\u00edn hi\u1ec7u \u0111i\u1ec7nth\u00e0nh nh\u1eefng nh\u1ecbp rung m\u00e0 m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 nghe nh\u01b0 \u00e2m thanh. Trong m\u1ed9t v\u00e0i th\u00ed nghi\u1ec7m kh\u00e1c nhau, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 cho th\u1ea5y n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o. H\u1ecd \u0111\u00e3 nh\u00fang thi\u1ebft b\u1ecb FENG v\u00e0o l\u00e1 c\u1edd c\u1ee7a tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Spartan v\u00e0 sau \u0111\u00f3 m\u1edf b\u00e0i h\u00e1t c\u1ee7a Tr\u01b0\u1eddng th\u00f4ng qua n\u00f3. H\u1ecd cho th\u1ea5y n\u00f3 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng nh\u1eadn d\u1ea1ng gi\u1ecdng n\u00f3i \u0111\u1ec3 x\u00e1c th\u1ef1c quy\u1ec1n truy c\u1eadp v\u00e0o m\u00e1y t\u00ednh.<\/p>\n<p>Sepulveda cho bi\u1ebft: T\u00ednh ch\u00ednh x\u00e1c v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a vi\u1ec7c nh\u1eadn bi\u1ebft \u00e2m thanh l\u00e0 \u0111\u1ee7 cao \u0111\u1ec3 nh\u1eadn ra nh\u1eefng \u00e2m thanh v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 trong ti\u1ebfng n\u00f3i c\u1ee7a c\u00e1 nh\u00e2n. T\u00ednh n\u0103ng c\u1ee7a thi\u1ebft b\u1ecb microphone ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 micro t\u1ed1t nh\u1ea5t hi\u1ec7n c\u00f3 tr\u00ean th\u1ecb tr\u01b0\u1eddng. Ch\u00fang d\u1ef1a v\u00e0o c\u00e1c th\u00e0nh ph\u1ea7n tinh th\u1ec3, \u0111\u01b0\u1ee3c g\u1ecdi b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec7n \u00e1p, thu \u00e2m v\u00e0 chuy\u1ec3n n\u00f3 th\u00e0nh c\u00e1c t\u00edn hi\u1ec7u \u0111i\u1ec7n m\u00e0 m\u00e1y t\u00ednh c\u00f3 th\u1ec3 bi\u1ebfn th\u00e0nh \u00e2m thanh. \u0110i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng theo c\u00e1ch n\u00e0y m\u1ed9t ph\u1ea7n v\u00ec c\u1ea5u tr\u00fac nguy\u00ean t\u1eed, c\u00f3 ch\u1ee9a c\u00e1c c\u1eb7p \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng v\u00e0 \u00e2m, g\u1ecdi l\u00e0 l\u01b0\u1ee1ng c\u1ef1c. Khi s\u00f3ng \u00e2m n\u1ea3y l\u00ean kh\u1ecfi tinh th\u1ec3, ch\u00fang t\u1ea1o ra c\u00e1c \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng v\u00e0 \u00e2m \u0111\u1ec3 th\u1eb3ng h\u00e0ng v\u00e0 l\u1ec7ch, sau \u0111\u00f3 t\u1ea1o ra t\u00edn hi\u1ec7u.<\/p>\n<p>Nelson Sepulveda v\u00e0 c\u00e1c \u0111\u1ed3ng nghi\u1ec7p c\u1ee7a \u00f4ng c\u00f3 th\u1ec3 b\u1eaft ch\u01b0\u1edbc c\u1ea5u tr\u00fac n\u00e0y trong thi\u1ebft b\u1ecb FENG nh\u01b0ng v\u1edbi c\u00e1c l\u01b0\u1ee1ng c\u1ef1c l\u1edbn h\u01a1n nhi\u1ec1u. Thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00e1c l\u1edbp ch\u1ea5t r\u1ea5t th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng, bao g\u1ed3m b\u1ea1c, polyimide v\u00e0 ferroelectret polypropylene. C\u00e1c h\u1ea1t \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng v\u00e0 \u00e2m \u0111\u01b0\u1ee3c th\u00eam v\u00e0o c\u00e1c l\u1edbp, \u0111\u01b0\u1ee3c x\u1ebfp ch\u1ed3ng l\u00ean nhau theo m\u1ed9t c\u00e1ch kh\u00f4ng \u0111\u1ec1u. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u cho bi\u1ebft s\u1ef1 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u t\u1ea1o ra nh\u1eefng t\u00fai kh\u00ed c\u1ef1c nh\u1ecf gi\u1eefa c\u00e1c l\u1edbp t\u01b0\u01a1ng t\u1ef1 nh\u01b0 l\u01b0\u1ee1ng c\u1ef1c trong c\u00e1c tinh th\u1ec3 \u00e1p \u0111i\u1ec7n. Khi s\u00f3ng \u00e2m n\u1ea3y l\u00ean kh\u1ecfi t\u00fai kh\u00f4ng kh\u00ed, ch\u00fang n\u00e9n c\u00e1c l\u01b0\u1ee1ng c\u1ef1c r\u1ed7ng, l\u00e0m cho c\u00e1c \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng v\u00e0 \u00e2m nghi\u00eang v\u00e0 l\u1ec7ch.<\/p>\n<p>Nelson Sepulveda k\u1ebft lu\u1eadn: &#8220;Ch\u00fang t\u00f4i \u0111ang t\u1ea1o ra s\u1ea3n l\u01b0\u1ee3ng \u0111i\u1ec7n t\u01b0\u01a1ng t\u1ef1 nh\u01b0 nh\u1eefng chi\u1ebfc micro r\u1ea5t \u0111\u1eaft ti\u1ec1n s\u1eed d\u1ee5ng c\u00e1c tinh th\u1ec3 gi\u00f2n. \u0110i\u1ec1u ng\u01b0\u1ee3c l\u1ea1i c\u0169ng \u0111\u00fang. T\u00edn hi\u1ec7u \u0111i\u1ec7n \u0111\u01b0\u1ee3c g\u1eedi qua thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 mang \u0111\u1ebfn nh\u1ecbp rung t\u1ea1o ra \u00e2m thanh. M\u1ed9t \u1ee9ng d\u1ee5ng ti\u1ec1m n\u0103ng kh\u00e1c, \u0111\u00f3 l\u00e0 thi\u1ebft b\u1ecb h\u1ee7y b\u1ecf ti\u1ebfng \u1ed3n. V\u00ed d\u1ee5, m\u1ed9t ng\u01b0\u1eddi c\u00f3 th\u1ec3 g\u1eafn phim tr\u00ean c\u1eeda s\u1ed5, n\u01a1i n\u00f3 c\u00f3 th\u1ec3 thu ti\u1ebfng \u1ed3n \u1edf tr\u00ean ph\u1ed1 v\u00e0 xem c\u00e1c s\u00f3ng \u00e2m \u0111\u1ed1i di\u1ec7n \u0111\u1ec3 l\u00e0m gi\u1ea3m ti\u1ebfng \u1ed3n. Th\u1ef1c t\u1ebf c\u00f3 r\u1ea5t nhi\u1ec1u \u00fd t\u01b0\u1edfng,v\u00e0 ch\u00fang ta \u0111ang ti\u1ebfp t\u1ee5c nghi\u00ean c\u1ee9u v\u1ec1 c\u00f4ng ngh\u1ec7 v\u00e0 h\u1ecdc c\u00e1c m\u1eb9o c\u1ee7a n\u00f3 h\u00e0ng ng\u00e0y\u201d.<\/p>\n<p style=\"text-align: right;\"><em>\u0110.T.V<\/em><\/p>\n<p style=\"text-align: right;\"><em>Ngu\u1ed3n Vista<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u1edf \u0110\u1ea1i h\u1ecdc bang Michigan \u0111\u00e3 ph\u00e1t tri\u1ec3n m\u1ed9t thi\u1ebft b\u1ecb d\u1ea1ng t\u1ea5m, \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nh\u01b0 l\u00e0 b\u1ed9 ph\u00e1t nano ferroelectret ho\u1eb7c FENG, ho\u1ea1t \u0111\u1ed9ng nh\u01b0 loa v\u00e0 micro v\u00e0 c\u00f3 th\u1ec3 t\u1ea1o ra n\u0103ng l\u01b0\u1ee3ng t\u1eeb chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a con ng\u01b0\u1eddi, ch\u1eb3ng h\u1ea1n nh\u01b0 vu\u1ed1t ng\u00f3n tay tr\u00ean m\u00e0n [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":6539,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-5914","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\/5914","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=5914"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5914\/revisions"}],"predecessor-version":[{"id":6540,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5914\/revisions\/6540"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/6539"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=5914"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=5914"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=5914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}