{"id":43924,"date":"2023-04-25T16:43:11","date_gmt":"2023-04-25T21:43:11","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-does-a-piezo-do\/"},"modified":"2025-01-21T07:27:29","modified_gmt":"2025-01-21T12:27:29","slug":"what-does-a-piezo-do","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-does-a-piezo-do\/","title":{"rendered":"Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n: Piezo ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?"},"content":{"rendered":"<p>Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, hay c\u00f2n g\u1ecdi l\u00e0 hi\u1ec7u \u1ee9ng piezo, l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd th\u00fa v\u1ecb v\u00e0 h\u1eefu \u00edch, m\u00f4 t\u1ea3 s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n \u00e1p trong m\u1ed9t s\u1ed1 lo\u1ea1i v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh, g\u1ecdi l\u00e0 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi b\u1ecb t\u00e1c d\u1ee5ng l\u1ef1c, v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, ch\u00fang c\u0169ng c\u00f3 th\u1ec3 bi\u1ebfn \u0111\u1ed5i \u0111i\u1ec7n \u00e1p th\u00e0nh rung \u0111\u1ed9ng c\u01a1 h\u1ecdc.  \u1ee8ng d\u1ee5ng c\u1ee7a hi\u1ec7u \u1ee9ng n\u00e0y v\u00f4 c\u00f9ng r\u1ed9ng r\u00e3i, t\u1eeb nh\u1eefng thi\u1ebft b\u1ecb quen thu\u1ed9c h\u00e0ng ng\u00e0y cho \u0111\u1ebfn c\u00e1c c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn trong y h\u1ecdc v\u00e0 c\u00f4ng nghi\u1ec7p.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n<\/h3>\n<p>V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, th\u01b0\u1eddng l\u00e0 c\u00e1c tinh th\u1ec3 ho\u1eb7c g\u1ed1m, c\u00f3 c\u1ea5u tr\u00fac tinh th\u1ec3 \u0111\u1eb7c bi\u1ec7t. Khi b\u1ecb n\u00e9n ho\u1eb7c k\u00e9o gi\u00e3n, c\u1ea5u tr\u00fac n\u00e0y b\u1ecb bi\u1ebfn d\u1ea1ng, d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e2n b\u1ed1 l\u1ea1i c\u00e1c \u0111i\u1ec7n t\u00edch b\u00ean trong v\u1eadt li\u1ec7u. S\u1ef1 ph\u00e2n b\u1ed1 l\u1ea1i \u0111i\u1ec7n t\u00edch n\u00e0y t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p tr\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u. Ng\u01b0\u1ee3c l\u1ea1i, khi \u00e1p m\u1ed9t \u0111i\u1ec7n \u00e1p v\u00e0o v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, n\u00f3 s\u1ebd l\u00e0m thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng c\u1ee7a v\u1eadt li\u1ec7u, t\u1ea1o ra s\u1ef1 gi\u00e3n n\u1edf ho\u1eb7c co l\u1ea1i, d\u1eabn \u0111\u1ebfn rung \u0111\u1ed9ng c\u01a1 h\u1ecdc.<\/p>\n<h3>C\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n ph\u1ed5 bi\u1ebfn<\/h3>\n<p>C\u00f3 nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n kh\u00e1c nhau, m\u1ed7i lo\u1ea1i c\u00f3 nh\u1eefng \u0111\u1eb7c t\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng ri\u00eang. M\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/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<th>\u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>G\u1ed1m (PZT)<\/td>\n<td>Gi\u00e1 th\u00e0nh th\u1ea5p, d\u1ec5 s\u1ea3n xu\u1ea5t, hi\u1ec7u su\u1ea5t cao<\/td>\n<td>D\u1ec5 v\u1ee1<\/td>\n<td>\u0110\u1ea7u d\u00f2 si\u00eau \u00e2m, c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t<\/td>\n<\/tr>\n<tr>\n<td>Tinh th\u1ec3 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 th\u1ea5p h\u01a1n g\u1ed1m<\/td>\n<td>\u0110\u1ed3ng h\u1ed3, b\u1ed9 dao \u0111\u1ed9ng<\/td>\n<\/tr>\n<tr>\n<td>Polyme (PVDF)<\/td>\n<td>Linh ho\u1ea1t, nh\u1eb9<\/td>\n<td>Hi\u1ec7u su\u1ea5t th\u1ea5p h\u01a1n g\u1ed1m v\u00e0 th\u1ea1ch anh<\/td>\n<td>C\u1ea3m bi\u1ebfn rung \u0111\u1ed9ng, loa si\u00eau \u00e2m<\/td>\n<\/tr>\n<tr>\n<td>Tinh th\u1ec3 \u0111\u01a1n<\/td>\n<td>Hi\u1ec7u su\u1ea5t r\u1ea5t cao<\/td>\n<td>Gi\u00e1 th\u00e0nh cao, kh\u00f3 s\u1ea3n xu\u1ea5t<\/td>\n<td>Thi\u1ebft b\u1ecb y t\u1ebf cao c\u1ea5p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n<\/h3>\n<p>Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau.<\/p>\n<ul>\n<li><strong>C\u1ea3m bi\u1ebfn:<\/strong>  V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ebf t\u1ea1o c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t, c\u1ea3m bi\u1ebfn gia t\u1ed1c, c\u1ea3m bi\u1ebfn rung \u0111\u1ed9ng, v\u00e0 c\u1ea3m bi\u1ebfn l\u1ef1c.  Khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c, c\u1ea3m bi\u1ebfn t\u1ea1o ra \u0111i\u1ec7n \u00e1p t\u1ef7 l\u1ec7 v\u1edbi l\u1ef1c t\u00e1c \u0111\u1ed9ng, cho ph\u00e9p \u0111o l\u01b0\u1eddng v\u00e0 gi\u00e1m s\u00e1t c\u00e1c th\u00f4ng s\u1ed1 v\u1eadt l\u00fd.<\/li>\n<li><strong>\u0110\u1ea7u d\u00f2 si\u00eau \u00e2m:<\/strong> Trong c\u00e1c thi\u1ebft b\u1ecb si\u00eau \u00e2m, v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra v\u00e0 ph\u00e1t hi\u1ec7n s\u00f3ng si\u00eau \u00e2m. V\u00ed d\u1ee5, trong l\u0129nh v\u1ef1c 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 h\u00ecnh \u1ea3nh b\u00ean trong c\u01a1 th\u1ec3.  M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb si\u00eau \u00e2m c\u00f4ng nghi\u1ec7p, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c thi\u1ebft b\u1ecb l\u00e0m s\u1ea1ch b\u1eb1ng s\u00f3ng si\u00eau \u00e2m, c\u0169ng \u1ee9ng d\u1ee5ng nguy\u00ean l\u00fd n\u00e0y. N\u1ebfu c\u1ea7n thi\u1ebft ph\u1ea3i \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t th\u01b0\u01a1ng hi\u1ec7u trong ng\u1eef c\u1ea3nh si\u00eau \u00e2m, Beijing Ultrasonic c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t v\u00ed d\u1ee5.<\/li>\n<li><strong>B\u1ed9 ph\u1eadn truy\u1ec1n \u0111\u1ed9ng:<\/strong> V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra c\u00e1c chuy\u1ec3n \u0111\u1ed9ng c\u01a1 h\u1ecdc ch\u00ednh x\u00e1c. V\u00ed d\u1ee5, ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u0111\u1ea7u in phun, h\u1ec7 th\u1ed1ng l\u1ea5y n\u00e9t t\u1ef1 \u0111\u1ed9ng c\u1ee7a m\u00e1y \u1ea3nh, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb vi c\u01a1 \u0111i\u1ec7n t\u1eed (MEMS).<\/li>\n<li><strong>S\u1ea3n xu\u1ea5t n\u0103ng l\u01b0\u1ee3ng:<\/strong>  Nghi\u00ean c\u1ee9u \u0111ang \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u0111\u1ec3 khai th\u00e1c hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u1ec3 s\u1ea3n xu\u1ea5t n\u0103ng l\u01b0\u1ee3ng t\u1eeb c\u00e1c ngu\u1ed3n rung \u0111\u1ed9ng, ch\u1eb3ng h\u1ea1n nh\u01b0 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a c\u01a1 th\u1ec3 con ng\u01b0\u1eddi ho\u1eb7c rung \u0111\u1ed9ng t\u1eeb giao th\u00f4ng.<\/li>\n<\/ul>\n<p>Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd \u0111a n\u0103ng v\u1edbi ti\u1ec1m n\u0103ng \u1ee9ng d\u1ee5ng to l\u1edbn. T\u1eeb vi\u1ec7c \u0111o l\u01b0\u1eddng \u00e1p su\u1ea5t v\u00e0 t\u1ea1o ra h\u00ecnh \u1ea3nh y t\u1ebf cho \u0111\u1ebfn vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e1c ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng m\u1edbi, hi\u1ec7u \u1ee9ng piezo \u0111ang \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a khoa h\u1ecdc c\u00f4ng ngh\u1ec7 v\u00e0 c\u1ea3i thi\u1ec7n cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y.  Vi\u1ec7c nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n c\u00e1c v\u1eadt li\u1ec7u v\u00e0 \u1ee9ng d\u1ee5ng \u00e1p \u0111i\u1ec7n m\u1edbi h\u1ee9a h\u1eb9n s\u1ebd mang l\u1ea1i nhi\u1ec1u \u0111\u1ed9t ph\u00e1 th\u00fa v\u1ecb trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, hay c\u00f2n g\u1ecdi l\u00e0 hi\u1ec7u \u1ee9ng piezo, l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd th\u00fa v\u1ecb v\u00e0 h\u1eefu \u00edch, m\u00f4 t\u1ea3 s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n \u00e1p trong m\u1ed9t s\u1ed1 lo\u1ea1i v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh, g\u1ecdi l\u00e0 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, v\u1eadt li\u1ec7u<\/p>\n","protected":false},"author":1,"featured_media":23758,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-43924","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\/43924","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=43924"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/43924\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/23758"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=43924"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=43924"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=43924"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}