{"id":44228,"date":"2023-04-25T16:19:20","date_gmt":"2023-04-25T21:19:20","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-a-piezoelectric-device\/"},"modified":"2025-01-21T07:28:19","modified_gmt":"2025-01-21T12:28:19","slug":"what-is-a-piezoelectric-device","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-is-a-piezoelectric-device\/","title":{"rendered":"Kh\u00e1m ph\u00e1 V\u1eadt li\u1ec7u \u00c1p \u0111i\u1ec7n: Nguy\u00ean l\u00fd v\u00e0 \u1ee8ng d\u1ee5ng"},"content":{"rendered":"<p>Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd th\u00fa v\u1ecb, l\u00e0 n\u1ec1n t\u1ea3ng cho s\u1ef1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n.  N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, c\u00e1c thi\u1ebft b\u1ecb n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc (nh\u01b0 \u00e1p l\u1ef1c, rung \u0111\u1ed9ng) th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.  Ch\u00fang ta s\u1ebd c\u00f9ng t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u, \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng v\u00e0 tri\u1ec3n v\u1ecdng t\u01b0\u01a1ng lai c\u1ee7a c\u00f4ng ngh\u1ec7 \u00e1p \u0111i\u1ec7n.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n<\/h3>\n<p>Thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n. Khi m\u1ed9t v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n b\u1ecb t\u00e1c \u0111\u1ed9ng b\u1edfi m\u1ed9t l\u1ef1c c\u01a1 h\u1ecdc, c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a n\u00f3 b\u1ecb bi\u1ebfn d\u1ea1ng, t\u1ea1o ra s\u1ef1 ph\u00e2n c\u1ef1c \u0111i\u1ec7n v\u00e0 sinh ra \u0111i\u1ec7n \u00e1p tr\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u. Ng\u01b0\u1ee3c l\u1ea1i, khi m\u1ed9t \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, n\u00f3 s\u1ebd thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc, t\u1ea1o ra s\u1ef1 bi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc.<\/p>\n<h3>V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n<\/h3>\n<p>C\u00f3 nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, bao g\u1ed3m c\u1ea3 v\u1eadt li\u1ec7u t\u1ef1 nhi\u00ean nh\u01b0 th\u1ea1ch anh v\u00e0 g\u1ed1m \u00e1p \u0111i\u1ec7n nh\u00e2n t\u1ea1o nh\u01b0 ch\u00ec zirconat titanat (PZT).  <\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Lo\u1ea1i v\u1eadt li\u1ec7u<\/th>\n<th>\u01afu \u0111i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Th\u1ea1ch anh<\/td>\n<td>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh cao, t\u1ea7n s\u1ed1 c\u1ed9ng h\u01b0\u1edfng ch\u00ednh x\u00e1c<\/td>\n<td>Hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n th\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>G\u1ed1m PZT<\/td>\n<td>Hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n cao, gi\u00e1 th\u00e0nh th\u1ea5p<\/td>\n<td>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00e9m h\u01a1n th\u1ea1ch anh<\/td>\n<\/tr>\n<tr>\n<td>V\u1eadt li\u1ec7u polyme<\/td>\n<td>Linh ho\u1ea1t, nh\u1eb9<\/td>\n<td>Hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n th\u1ea5p h\u01a1n g\u1ed1m<\/td>\n<\/tr>\n<tr>\n<td>V\u1eadt li\u1ec7u composite<\/td>\n<td>K\u1ebft h\u1ee3p \u01b0u \u0111i\u1ec3m c\u1ee7a c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u kh\u00e1c nhau<\/td>\n<td>Qu\u00e1 tr\u00ecnh ch\u1ebf t\u1ea1o ph\u1ee9c t\u1ea1p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n<\/h3>\n<p>Thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, t\u1eeb \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y \u0111\u1ebfn c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p cao c\u1ea5p.<\/p>\n<ul>\n<li><strong>\u0110\u1ea7u d\u00f2 si\u00eau \u00e2m:<\/strong>  Trong y t\u1ebf, \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m s\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u1ec3 t\u1ea1o ra s\u00f3ng si\u00eau \u00e2m, gi\u00fap h\u00ecnh dung c\u00e1c c\u01a1 quan b\u00ean trong c\u01a1 th\u1ec3. Trong c\u00f4ng nghi\u1ec7p, s\u00f3ng si\u00eau \u00e2m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m tra khuy\u1ebft t\u1eadt trong v\u1eadt li\u1ec7u.<\/li>\n<li><strong>M\u1ed3i l\u1eeda:<\/strong>  Trong b\u1eadt l\u1eeda gas, m\u1ed9t l\u1ef1c c\u01a1 h\u1ecdc t\u00e1c \u0111\u1ed9ng l\u00ean v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n t\u1ea1o ra tia l\u1eeda \u0111i\u1ec7n \u0111\u1ec3 \u0111\u1ed1t ch\u00e1y gas.<\/li>\n<li><strong>C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t:<\/strong>  C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o \u00e1p su\u1ea5t trong l\u1ed1p xe, h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c v\u00e0 nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c.<\/li>\n<li><strong>Thi\u1ebft b\u1ecb truy\u1ec1n \u0111\u1ed9ng:<\/strong>  Thi\u1ebft b\u1ecb truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb ch\u00ednh x\u00e1c, in phun v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/li>\n<li><strong>Thu n\u0103ng l\u01b0\u1ee3ng:<\/strong>  C\u00e1c nghi\u00ean c\u1ee9u \u0111ang \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u0111\u1ec3 s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u1ec3 thu n\u0103ng l\u01b0\u1ee3ng t\u1eeb rung \u0111\u1ed9ng v\u00e0 chuy\u1ec3n \u0111\u1ed5i th\u00e0nh \u0111i\u1ec7n n\u0103ng.<\/li>\n<\/ul>\n<h3>T\u01b0\u01a1ng lai c\u1ee7a c\u00f4ng ngh\u1ec7 \u00e1p \u0111i\u1ec7n<\/h3>\n<p>C\u00f4ng ngh\u1ec7 \u00e1p \u0111i\u1ec7n \u0111ang kh\u00f4ng ng\u1eebng ph\u00e1t tri\u1ec3n v\u1edbi vi\u1ec7c nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n c\u00e1c v\u1eadt li\u1ec7u m\u1edbi c\u00f3 hi\u1ec7u su\u1ea5t cao h\u01a1n, th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng h\u01a1n. C\u00e1c \u1ee9ng d\u1ee5ng ti\u1ec1m n\u0103ng c\u1ee7a c\u00f4ng ngh\u1ec7 \u00e1p \u0111i\u1ec7n bao g\u1ed3m c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed d\u1ebbo, thu n\u0103ng l\u01b0\u1ee3ng t\u1eeb m\u00f4i tr\u01b0\u1eddng v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng y sinh h\u1ecdc ti\u00ean ti\u1ebfn.<\/p>\n<p>T\u00f3m l\u1ea1i, thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 quan tr\u1ecdng v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng v\u00e0 ti\u1ec1m n\u0103ng ph\u00e1t tri\u1ec3n to l\u1edbn. Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n cho ph\u00e9p chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng gi\u1eefa d\u1ea1ng c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n, m\u1edf ra nhi\u1ec1u kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng trong t\u01b0\u01a1ng lai.  S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 v\u1eadt li\u1ec7u v\u00e0 k\u1ef9 thu\u1eadt ch\u1ebf t\u1ea1o s\u1ebd ti\u1ebfp t\u1ee5c th\u00fac \u0111\u1ea9y s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a c\u00f4ng ngh\u1ec7 \u00e1p \u0111i\u1ec7n, mang l\u1ea1i nh\u1eefng gi\u1ea3i ph\u00e1p s\u00e1ng t\u1ea1o v\u00e0 hi\u1ec7u qu\u1ea3 cho nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd th\u00fa v\u1ecb, l\u00e0 n\u1ec1n t\u1ea3ng cho s\u1ef1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u00e1p \u0111i\u1ec7n. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, c\u00e1c thi\u1ebft b\u1ecb n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc (nh\u01b0 \u00e1p l\u1ef1c, rung \u0111\u1ed9ng) th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Ch\u00fang<\/p>\n","protected":false},"author":1,"featured_media":23771,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-44228","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/44228","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=44228"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/44228\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/23771"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=44228"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=44228"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=44228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}