{"id":42861,"date":"2024-11-21T15:31:39","date_gmt":"2024-11-21T20:31:39","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/a-world-of-tiny-vibrations-the-immeasurable-impact-of-piezoelectric-transducers\/"},"modified":"2025-01-21T07:05:42","modified_gmt":"2025-01-21T12:05:42","slug":"a-world-of-tiny-vibrations-the-immeasurable-impact-of-piezoelectric-transducers","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/a-world-of-tiny-vibrations-the-immeasurable-impact-of-piezoelectric-transducers\/","title":{"rendered":"Th\u1ebf Gi\u1edbirung \u0110\u1ed9ng: Chuy\u1ec3n \u0110\u1ed5i \u00c1p \u0110i\u1ec7n K\u1ef3 Di\u1ec7u"},"content":{"rendered":"

Th\u1ebf gi\u1edbi xung quanh ta, t\u1eeb nh\u1eefng \u00e2m thanh ta nghe th\u1ea5y \u0111\u1ebfn nh\u1eefng rung \u0111\u1ed9ng nh\u1ecf b\u00e9 m\u00e0 ta kh\u00f4ng th\u1ec3 c\u1ea3m nh\u1eadn, \u0111\u1ec1u l\u00e0 s\u1ef1 chuy\u1ec3n \u0111\u1ed9ng kh\u00f4ng ng\u1eebng c\u1ee7a n\u0103ng l\u01b0\u1ee3ng. Trong v\u00f4 v\u00e0n nh\u1eefng chuy\u1ec3n \u0111\u1ed9ng \u1ea5y, t\u1ed3n t\u1ea1i m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng \u0111\u1eb7c bi\u1ec7t, \u0111\u01b0\u1ee3c sinh ra t\u1eeb s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n tr\u01b0\u1eddng: \u0111\u00f3 ch\u00ednh l\u00e0 hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n. V\u00e0 ch\u00ednh nh\u1edd hi\u1ec7u \u1ee9ng n\u00e0y, nh\u1eefng thi\u1ebft b\u1ecb nh\u1ecf b\u00e9 g\u1ecdi l\u00e0 "b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n" (piezoelectric transducers) \u0111\u00e3 v\u00e0 \u0111ang t\u1ea1o n\u00ean nh\u1eefng thay \u0111\u1ed5i to l\u1edbn, \u1ea3nh h\u01b0\u1edfng s\u00e2u r\u1ed9ng \u0111\u1ebfn cu\u1ed9c s\u1ed1ng con ng\u01b0\u1eddi. Ch\u00fang ta \u0111ang s\u1ed1ng trong m\u1ed9t th\u1ebf gi\u1edbi c\u1ee7a nh\u1eefng rung \u0111\u1ed9ng nh\u1ecf b\u00e9, v\u00e0 b\u00e0i vi\u1ebft n\u00e0y s\u1ebd kh\u00e1m ph\u00e1 t\u00e1c \u0111\u1ed9ng v\u00f4 h\u00ecnh nh\u01b0ng m\u1ea1nh m\u1ebd c\u1ee7a nh\u1eefng b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n.<\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n<\/h3>\n

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n l\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c c\u01a1 h\u1ecdc, v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, bi\u1ebfn \u0111\u1ed5i \u0111i\u1ec7n n\u0103ng th\u00e0nh n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc d\u01b0\u1edbi d\u1ea1ng rung \u0111\u1ed9ng. B\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n ch\u00ednh l\u00e0 thi\u1ebft b\u1ecb t\u1eadn d\u1ee5ng hi\u1ec7u \u1ee9ng n\u00e0y \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n n\u0103ng. Ch\u00fang \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb c\u00e1c v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n nh\u01b0 th\u1ea1ch anh, g\u1ed1m \u00e1p \u0111i\u1ec7n (PZT) v\u00e0 c\u00e1c polyme \u0111\u1eb7c bi\u1ec7t.<\/p>\n

\u1ee8ng d\u1ee5ng trong y t\u1ebf<\/h3>\n

Trong l\u0129nh v\u1ef1c y t\u1ebf, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng ch\u1ea9n \u0111o\u00e1n v\u00e0 \u0111i\u1ec1u tr\u1ecb. Si\u00eau \u00e2m y t\u1ebf, m\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t, s\u1eed d\u1ee5ng b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n \u0111\u1ec3 t\u1ea1o ra s\u00f3ng \u00e2m t\u1ea7n s\u1ed1 cao, gi\u00fap h\u00ecnh dung c\u00e1c c\u01a1 quan b\u00ean trong c\u01a1 th\u1ec3. Ngo\u00e0i ra, ch\u00fang c\u00f2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb theo d\u00f5i nh\u1ecbp tim, m\u00e1y \u0111o huy\u1ebft \u00e1p, v\u00e0 th\u1eadm ch\u00ed trong m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p ph\u1eabu thu\u1eadt kh\u00f4ng x\u00e2m l\u1ea5n.<\/p>\n

\u1ee8ng d\u1ee5ng trong c\u00f4ng nghi\u1ec7p<\/h3>\n

B\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n c\u0169ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00f4ng nghi\u1ec7p, t\u1eeb vi\u1ec7c ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m \u0111\u1ebfn vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n c\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c khuy\u1ebft t\u1eadt trong v\u1eadt li\u1ec7u, \u0111o \u0111\u1ed9 d\u00e0y v\u00e0 \u0111\u1ed9 c\u1ee9ng, c\u0169ng nh\u01b0 ki\u1ec3m so\u00e1t rung \u0111\u1ed9ng trong m\u00e1y m\u00f3c. V\u00ed d\u1ee5, trong ng\u00e0nh c\u00f4ng nghi\u1ec7p \u00f4 t\u00f4, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng phun nhi\u00ean li\u1ec7u v\u00e0 c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t l\u1ed1p.<\/p>\n

\u1ee8ng d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y<\/h3>\n

T\u1eeb nh\u1eefng thi\u1ebft b\u1ecb quen thu\u1ed9c nh\u01b0 b\u1eadt l\u1eeda piezo \u0111\u1ebfn loa \u0111i\u1ec7n tho\u1ea1i v\u00e0 \u0111\u1ed3ng h\u1ed3 th\u1ea1ch anh, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n \u0111\u00e3 len l\u1ecfi v\u00e0o cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y c\u1ee7a ch\u00fang ta. Ch\u00fang c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u00e1y in phun, m\u00e1y \u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1 v\u00e0 th\u1eadm ch\u00ed trong m\u1ed9t s\u1ed1 lo\u1ea1i micro.<\/p>\n

B\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n v\u00e0 t\u01b0\u01a1ng lai<\/h3>\n

V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a c\u00f4ng ngh\u1ec7, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n h\u1ee9a h\u1eb9n s\u1ebd mang l\u1ea1i nhi\u1ec1u \u1ee9ng d\u1ee5ng \u0111\u1ed9t ph\u00e1 h\u01a1n n\u1eefa trong t\u01b0\u01a1ng lai. Nghi\u00ean c\u1ee9u v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng t\u1eeb rung \u0111\u1ed9ng m\u00f4i tr\u01b0\u1eddng \u0111\u1ec3 cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed nh\u1ecf \u0111ang \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh, m\u1edf ra ti\u1ec1m n\u0103ng cho m\u1ed9t t\u01b0\u01a1ng lai xanh h\u01a1n. C\u00e1c \u1ee9ng d\u1ee5ng trong l\u0129nh v\u1ef1c robot, tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o v\u00e0 Internet of Things c\u0169ng \u0111ang \u0111\u01b0\u1ee3c kh\u00e1m ph\u00e1.<\/p>\n

S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 \u00e1p \u0111i\u1ec7n \u0111\u00e3 v\u00e0 \u0111ang thay \u0111\u1ed5i th\u1ebf gi\u1edbi theo nh\u1eefng c\u00e1ch th\u1ee9c m\u00e0 ch\u00fang ta kh\u00f3 c\u00f3 th\u1ec3 h\u00ecnh dung h\u1ebft \u0111\u01b0\u1ee3c. T\u1eeb nh\u1eefng \u1ee9ng d\u1ee5ng quen thu\u1ed9c trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y \u0111\u1ebfn nh\u1eefng \u0111\u1ed9t ph\u00e1 khoa h\u1ecdc ti\u00ean ti\u1ebfn, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n \u0111\u00e3 ch\u1ee9ng minh s\u1ee9c m\u1ea1nh to l\u1edbn c\u1ee7a nh\u1eefng rung \u0111\u1ed9ng nh\u1ecf b\u00e9. Ch\u00fang ta c\u00f3 th\u1ec3 k\u1ef3 v\u1ecdng r\u1eb1ng trong t\u01b0\u01a1ng lai, nh\u1eefng rung \u0111\u1ed9ng n\u00e0y s\u1ebd ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c khai th\u00e1c v\u00e0 \u1ee9ng d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra nh\u1eefng thay \u0111\u1ed5i t\u00edch c\u1ef1c cho cu\u1ed9c s\u1ed1ng con ng\u01b0\u1eddi.<\/p>\n","protected":false},"excerpt":{"rendered":"

Th\u1ebf gi\u1edbi xung quanh ta, t\u1eeb nh\u1eefng \u00e2m thanh ta nghe th\u1ea5y \u0111\u1ebfn nh\u1eefng rung \u0111\u1ed9ng nh\u1ecf b\u00e9 m\u00e0 ta kh\u00f4ng th\u1ec3 c\u1ea3m nh\u1eadn, \u0111\u1ec1u l\u00e0 s\u1ef1 chuy\u1ec3n \u0111\u1ed9ng kh\u00f4ng ng\u1eebng c\u1ee7a n\u0103ng l\u01b0\u1ee3ng. Trong v\u00f4 v\u00e0n nh\u1eefng chuy\u1ec3n \u0111\u1ed9ng \u1ea5y, t\u1ed3n t\u1ea1i m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng \u0111\u1eb7c bi\u1ec7t, \u0111\u01b0\u1ee3c sinh ra t\u1eeb s\u1ef1 t\u01b0\u01a1ng<\/p>\n","protected":false},"author":1,"featured_media":23744,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-42861","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\/42861","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=42861"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/42861\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/23744"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=42861"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=42861"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=42861"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}