{"id":50596,"date":"2023-04-21T14:41:36","date_gmt":"2023-04-21T19:41:36","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-does-piezoelectric-work\/"},"modified":"2025-01-21T07:12:41","modified_gmt":"2025-01-21T12:12:41","slug":"how-does-piezoelectric-work","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-does-piezoelectric-work\/","title":{"rendered":"Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n: C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd th\u00fa v\u1ecb v\u00e0 h\u1eefu \u00edch, cho ph\u00e9p chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n b\u1edfi hai anh em nh\u00e0 v\u1eadt l\u00fd ng\u01b0\u1eddi Ph\u00e1p, Jacques v\u00e0 Pierre Curie, v\u00e0o n\u0103m 1880. K\u1ec3 t\u1eeb \u0111\u00f3, hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed h\u00e0ng ng\u00e0y \u0111\u1ebfn c\u00e1c c\u00f4ng ngh\u1ec7 y t\u1ebf ti\u00ean ti\u1ebfn. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, t\u1eeb c\u1ea5u tr\u00fac v\u1eadt li\u1ec7u \u0111\u1ebfn \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n.<\/p>\n

C\u1ea5u tr\u00fac Tinh th\u1ec3 v\u00e0 S\u1ef1 Ph\u00e2n c\u1ef1c \u0110i\u1ec7n<\/h3>\n

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n x\u1ea3y ra trong c\u00e1c v\u1eadt li\u1ec7u c\u00f3 c\u1ea5u tr\u00fac tinh th\u1ec3 kh\u00f4ng \u0111\u1ed1i x\u1ee9ng. \u1ede tr\u1ea1ng th\u00e1i b\u00ecnh th\u01b0\u1eddng, c\u00e1c \u0111i\u1ec7n t\u00edch trong tinh th\u1ec3 ph\u00e2n b\u1ed1 \u0111\u1ec1u, khi\u1ebfn v\u1eadt li\u1ec7u trung h\u00f2a v\u1ec1 \u0111i\u1ec7n. Tuy nhi\u00ean, khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c c\u01a1 h\u1ecdc nh\u01b0 n\u00e9n ho\u1eb7c k\u00e9o d\u00e3n, c\u1ea5u tr\u00fac tinh th\u1ec3 b\u1ecb bi\u1ebfn d\u1ea1ng, l\u00e0m l\u1ec7ch t\u00e2m ph\u00e2n b\u1ed1 \u0111i\u1ec7n t\u00edch. S\u1ef1 l\u1ec7ch t\u00e2m n\u00e0y t\u1ea1o ra s\u1ef1 ph\u00e2n c\u1ef1c \u0111i\u1ec7n tr\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u, sinh ra \u0111i\u1ec7n \u00e1p.<\/p>\n

Hi\u1ec7u \u1ee9ng \u00c1p \u0111i\u1ec7n Thu\u1eadn v\u00e0 Ngh\u1ecbch<\/h3>\n

C\u00f3 hai lo\u1ea1i hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n: hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n thu\u1eadn v\u00e0 hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n ngh\u1ecbch. Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n thu\u1eadn l\u00e0 vi\u1ec7c t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n b\u1ecb bi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc. Ng\u01b0\u1ee3c l\u1ea1i, hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n ngh\u1ecbch l\u00e0 vi\u1ec7c v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n b\u1ecb bi\u1ebfn d\u1ea1ng khi \u0111\u1eb7t d\u01b0\u1edbi \u0111i\u1ec7n tr\u01b0\u1eddng.<\/p>\n\n\n\n\n\n\n
Hi\u1ec7u \u1ee9ng<\/th>\n\u0110\u1ea7u v\u00e0o<\/th>\n\u0110\u1ea7u ra<\/th>\n<\/tr>\n<\/thead>\n
\u00c1p \u0111i\u1ec7n thu\u1eadn<\/td>\nL\u1ef1c c\u01a1 h\u1ecdc (n\u00e9n\/k\u00e9o d\u00e3n)<\/td>\n\u0110i\u1ec7n \u00e1p<\/td>\n<\/tr>\n
\u00c1p \u0111i\u1ec7n ngh\u1ecbch<\/td>\n\u0110i\u1ec7n \u00e1p<\/td>\nBi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc (n\u00e9n\/k\u00e9o d\u00e3n)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

V\u1eadt li\u1ec7u \u00c1p \u0111i\u1ec7n<\/h3>\n

C\u00f3 nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u th\u1ec3 hi\u1ec7n t\u00ednh \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). PZT l\u00e0 m\u1ed9t trong nh\u1eefng v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t do hi\u1ec7u su\u1ea5t cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ebf t\u1ea1o linh ho\u1ea1t.<\/p>\n

\u1ee8ng d\u1ee5ng c\u1ee7a Hi\u1ec7u \u1ee9ng \u00c1p \u0111i\u1ec7n<\/h3>\n

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y v\u00e0 trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau. V\u00ed d\u1ee5, trong b\u1eadt l\u1eeda gas, l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u00ean tinh th\u1ec3 \u00e1p \u0111i\u1ec7n t\u1ea1o ra tia l\u1eeda \u0111i\u1ec7n \u0111\u1ec3 \u0111\u1ed1t ch\u00e1y gas. Trong c\u00e1c thi\u1ebft b\u1ecb si\u00eau \u00e2m, hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n ngh\u1ecbch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra s\u00f3ng si\u00eau \u00e2m. M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng kh\u00e1c bao g\u1ed3m c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t, c\u1ea3m bi\u1ebfn gia t\u1ed1c, m\u00e1y ph\u00e1t \u0111i\u1ec7n nh\u1ecf, v\u00e0 thi\u1ebft b\u1ecb truy\u1ec1n \u0111\u1ed9ng. Trong l\u0129nh v\u1ef1c y t\u1ebf, si\u00eau \u00e2m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho ch\u1ea9n \u0111o\u00e1n h\u00ecnh \u1ea3nh. N\u1ebfu c\u1ea7n thi\u1ebft ph\u1ea3i \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t th\u01b0\u01a1ng hi\u1ec7u trong b\u1ed1i c\u1ea3nh si\u00eau \u00e2m, Beijing Ultrasonic l\u00e0 m\u1ed9t v\u00ed d\u1ee5.<\/p>\n

T\u00f3m l\u1ea1i, hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd \u0111\u1ed9c \u0111\u00e1o cho ph\u00e9p chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng gi\u1eefa d\u1ea1ng c\u01a1 h\u1ecdc v\u00e0 d\u1ea1ng \u0111i\u1ec7n. S\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a hi\u1ec7u \u1ee9ng n\u00e0y \u0111\u00e3 d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a nhi\u1ec1u \u1ee9ng d\u1ee5ng quan tr\u1ecdng, \u0111\u00f3ng g\u00f3p \u0111\u00e1ng k\u1ec3 v\u00e0o ti\u1ebfn b\u1ed9 c\u00f4ng ngh\u1ec7 v\u00e0 n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng cu\u1ed9c s\u1ed1ng. T\u1eeb nh\u1eefng thi\u1ebft b\u1ecb \u0111\u01a1n gi\u1ea3n nh\u01b0 b\u1eadt l\u1eeda \u0111\u1ebfn nh\u1eefng c\u00f4ng ngh\u1ec7 ph\u1ee9c t\u1ea1p nh\u01b0 si\u00eau \u00e2m y t\u1ebf, hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n ti\u1ebfp t\u1ee5c kh\u1eb3ng \u0111\u1ecbnh vai tr\u00f2 quan tr\u1ecdng trong th\u1ebf gi\u1edbi hi\u1ec7n \u0111\u1ea1i.<\/p>\n","protected":false},"excerpt":{"rendered":"

Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd th\u00fa v\u1ecb v\u00e0 h\u1eefu \u00edch, cho ph\u00e9p chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n b\u1edfi hai anh em nh\u00e0 v\u1eadt l\u00fd ng\u01b0\u1eddi Ph\u00e1p, Jacques v\u00e0 Pierre Curie, v\u00e0o n\u0103m 1880. K\u1ec3 t\u1eeb \u0111\u00f3,<\/p>\n","protected":false},"author":1,"featured_media":23776,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-50596","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\/50596","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=50596"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/50596\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/23776"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=50596"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=50596"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=50596"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}