{"id":52036,"date":"2023-04-21T13:12:50","date_gmt":"2023-04-21T18:12:50","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/diy-piezoelectric-crystal\/"},"modified":"2025-01-21T07:08:56","modified_gmt":"2025-01-21T12:08:56","slug":"diy-piezoelectric-crystal","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/diy-piezoelectric-crystal\/","title":{"rendered":"T\u1ef1 ch\u1ebf tinh th\u1ec3 \u00e1p \u0111i\u1ec7n: Kh\u00e1m ph\u00e1 n\u0103ng l\u01b0\u1ee3ng ti\u1ec1m \u1ea9n"},"content":{"rendered":"<p>Tinh th\u1ec3 \u00e1p \u0111i\u1ec7n t\u1ef1 ch\u1ebf (DIY piezoelectric crystal) l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb v\u00e0 mang t\u00ednh gi\u00e1o d\u1ee5c, cho ph\u00e9p b\u1ea1n kh\u00e1m ph\u00e1 c\u00e1c nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a \u00e1p \u0111i\u1ec7n. Tuy nhi\u00ean, vi\u1ec7c t\u1ea1o ra m\u1ed9t tinh th\u1ec3 \u00e1p \u0111i\u1ec7n hi\u1ec7u qu\u1ea3 cao t\u1eeb \u0111\u1ea7u t\u1ea1i nh\u00e0 l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c l\u1edbn, \u0111\u00f2i h\u1ecfi ki\u1ebfn th\u1ee9c chuy\u00ean s\u00e2u v\u1ec1 v\u1eadt li\u1ec7u v\u00e0 quy tr\u00ecnh ch\u1ebf t\u1ea1o ph\u1ee9c t\u1ea1p. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd t\u1eadp trung v\u00e0o vi\u1ec7c t\u00ecm hi\u1ec3u nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, \u1ee9ng d\u1ee5ng v\u00e0 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn vi\u1ec7c t\u1ef1 ch\u1ebf tinh th\u1ec3 \u00e1p \u0111i\u1ec7n m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a tinh th\u1ec3 \u00e1p \u0111i\u1ec7n<\/h3>\n<p>Tinh th\u1ec3 \u00e1p \u0111i\u1ec7n c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c c\u01a1 h\u1ecdc (hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp). Ng\u01b0\u1ee3c l\u1ea1i, ch\u00fang c\u0169ng c\u00f3 th\u1ec3 bi\u1ebfn \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc, g\u00e2y ra s\u1ef1 bi\u1ebfn d\u1ea1ng ho\u1eb7c rung \u0111\u1ed9ng (hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n ngh\u1ecbch \u0111\u1ea3o). Hi\u1ec7u \u1ee9ng n\u00e0y xu\u1ea5t ph\u00e1t t\u1eeb c\u1ea5u tr\u00fac tinh th\u1ec3 kh\u00f4ng \u0111\u1ed1i x\u1ee9ng, khi\u1ebfn c\u00e1c \u0111i\u1ec7n t\u00edch ph\u00e2n b\u1ed1 kh\u00f4ng \u0111\u1ec1u khi b\u1ecb n\u00e9n ho\u1eb7c k\u00e9o gi\u00e3n.<\/p>\n<h3>C\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n<\/h3>\n<p>C\u00f3 nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n kh\u00e1c nhau, bao g\u1ed3m c\u1ea3 tinh th\u1ec3 t\u1ef1 nhi\u00ean (nh\u01b0 th\u1ea1ch anh) v\u00e0 v\u1eadt li\u1ec7u g\u1ed1m \u00e1p \u0111i\u1ec7n nh\u00e2n t\u1ea1o (nh\u01b0 PZT).  V\u1eadt li\u1ec7u g\u1ed1m th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf do t\u00ednh linh ho\u1ea1t trong thi\u1ebft k\u1ebf v\u00e0 kh\u1ea3 n\u0103ng t\u1ea1o ra \u0111i\u1ec7n \u00e1p cao h\u01a1n.<\/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<\/td>\n<td>\u0110i\u1ec7n \u00e1p \u0111\u1ea7u ra th\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>G\u1ed1m PZT<\/td>\n<td>\u0110i\u1ec7n \u00e1p \u0111\u1ea7u ra cao<\/td>\n<td>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00e9m h\u01a1n th\u1ea1ch anh<\/td>\n<\/tr>\n<tr>\n<td>PVDF (Polyvinylidene fluoride)<\/td>\n<td>Linh ho\u1ea1t, d\u1ec5 ch\u1ebf t\u1ea1o<\/td>\n<td>Hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n th\u1ea5p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Kh\u00e1m ph\u00e1 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ef1 ch\u1ebf \u0111\u01a1n gi\u1ea3n<\/h3>\n<p>Vi\u1ec7c t\u1ef1 ch\u1ebf tinh th\u1ec3 \u00e1p \u0111i\u1ec7n hi\u1ec7u su\u1ea5t cao t\u1ea1i nh\u00e0 l\u00e0 r\u1ea5t kh\u00f3. Tuy nhi\u00ean, c\u00f3 m\u1ed9t s\u1ed1 th\u00ed nghi\u1ec7m \u0111\u01a1n gi\u1ea3n minh h\u1ecda hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n:<\/p>\n<ul>\n<li><strong>S\u1eed d\u1ee5ng th\u1ea1ch anh t\u1eeb \u0111\u1ed3ng h\u1ed3:<\/strong>  B\u1ea1n c\u00f3 th\u1ec3 l\u1ea5y tinh th\u1ec3 th\u1ea1ch anh t\u1eeb m\u1ed9t chi\u1ebfc \u0111\u1ed3ng h\u1ed3 c\u0169 v\u00e0 k\u1ebft n\u1ed1i n\u00f3 v\u1edbi m\u1ed9t m\u1ea1ch \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 quan s\u00e1t s\u1ef1 thay \u0111\u1ed5i \u0111i\u1ec7n \u00e1p khi t\u00e1c d\u1ee5ng l\u1ef1c. L\u01b0u \u00fd, \u0111i\u1ec7n \u00e1p t\u1ea1o ra r\u1ea5t nh\u1ecf v\u00e0 kh\u00f3 \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c.<\/li>\n<li><strong>S\u1eed d\u1ee5ng v\u1eadt li\u1ec7u g\u1ed1m \u00e1p \u0111i\u1ec7n th\u01b0\u01a1ng m\u1ea1i:<\/strong>  B\u1ea1n c\u00f3 th\u1ec3 mua c\u00e1c mi\u1ebfng g\u1ed1m \u00e1p \u0111i\u1ec7n nh\u1ecf v\u00e0 s\u1eed d\u1ee5ng ch\u00fang trong c\u00e1c d\u1ef1 \u00e1n DIY. V\u00ed d\u1ee5, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t c\u1ea3m bi\u1ebfn rung \u0111\u1ed9ng ho\u1eb7c m\u1ed9t m\u00e1y ph\u00e1t \u00e2m thanh \u0111\u01a1n gi\u1ea3n.<\/li>\n<\/ul>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a tinh th\u1ec3 \u00e1p \u0111i\u1ec7n<\/h3>\n<p>Tinh th\u1ec3 \u00e1p \u0111i\u1ec7n c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y, t\u1eeb b\u1eadt l\u1eeda, c\u1ea3m bi\u1ebfn, \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb y t\u1ebf v\u00e0 c\u00f4ng nghi\u1ec7p. V\u00ed d\u1ee5, trong l\u0129nh v\u1ef1c si\u00eau \u00e2m, tinh th\u1ec3 \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra s\u00f3ng si\u00eau \u00e2m cho m\u1ee5c \u0111\u00edch ch\u1ea9n \u0111o\u00e1n h\u00ecnh \u1ea3nh.  <\/p>\n<h3>K\u1ebft lu\u1eadn<\/h3>\n<p>T\u1ef1 ch\u1ebf tinh th\u1ec3 \u00e1p \u0111i\u1ec7n hi\u1ec7u su\u1ea5t cao l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c, nh\u01b0ng vi\u1ec7c t\u00ecm hi\u1ec3u v\u1ec1 nguy\u00ean l\u00fd v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 l\u00e0 m\u1ed9t tr\u1ea3i nghi\u1ec7m b\u1ed5 \u00edch.  C\u00e1c th\u00ed nghi\u1ec7m \u0111\u01a1n gi\u1ea3n v\u1edbi th\u1ea1ch anh ho\u1eb7c g\u1ed1m \u00e1p \u0111i\u1ec7n th\u01b0\u01a1ng m\u1ea1i c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n v\u00e0 kh\u00e1m ph\u00e1 ti\u1ec1m n\u0103ng c\u1ee7a c\u00f4ng ngh\u1ec7 n\u00e0y.  Vi\u1ec7c nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n m\u1edbi v\u1eabn \u0111ang ti\u1ebfp t\u1ee5c, h\u1ee9a h\u1eb9n mang l\u1ea1i nhi\u1ec1u \u1ee9ng d\u1ee5ng \u0111\u1ed9t ph\u00e1 trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tinh th\u1ec3 \u00e1p \u0111i\u1ec7n t\u1ef1 ch\u1ebf (DIY piezoelectric crystal) l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb v\u00e0 mang t\u00ednh gi\u00e1o d\u1ee5c, cho ph\u00e9p b\u1ea1n kh\u00e1m ph\u00e1 c\u00e1c nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a \u00e1p \u0111i\u1ec7n. Tuy nhi\u00ean, vi\u1ec7c t\u1ea1o ra m\u1ed9t tinh th\u1ec3 \u00e1p \u0111i\u1ec7n hi\u1ec7u qu\u1ea3 cao t\u1eeb \u0111\u1ea7u t\u1ea1i nh\u00e0 l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c l\u1edbn,<\/p>\n","protected":false},"author":1,"featured_media":26468,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-52036","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\/52036","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=52036"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/52036\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26468"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=52036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=52036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=52036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}