{"id":10769,"date":"2023-05-10T10:20:10","date_gmt":"2023-05-10T04:50:10","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=10769"},"modified":"2025-03-29T22:34:24","modified_gmt":"2025-03-29T17:04:24","slug":"what-is-piezoelectricity","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/what-is-piezoelectricity\/","title":{"rendered":"What is Piezoelectricity?"},"content":{"rendered":"<h2>\u00a0<strong>About Piezoelectricity:<\/strong><\/h2>\n<ul>\n<li>Piezoelectricity (also called the piezoelectric effect) is the <strong>appearance of an electrical potential<\/strong> (a voltage, in other words) <strong>across the sides of a crystal<\/strong> <strong>when<\/strong> you <strong>subject it to mechanical stress.<\/strong><\/li>\n<li>In the <strong>reverse piezoelectric effect<\/strong>, a <strong>crystal becomes mechanically stressed<\/strong> (deformed in shape) <strong>when a voltage is applied<\/strong> across its opposite faces.<\/li>\n<li>Thus, <strong>Piezoelectric materials allow the conversion of energy<\/strong> <strong>from<\/strong> the <strong>mechanical<\/strong> domain <strong>to the electrical<\/strong> domain and vice versa.<\/li>\n<li>It is <strong>due to the spontaneous separation of charge<\/strong> with certain crystal structures under the right conditions.<\/li>\n<li><strong>There are a wide variety of materials<\/strong> which exhibit this phenomenon, including <strong>natural quartz crystals<\/strong>, semi-crystalline polyvinylidene polymer, <strong>polycrystalline piezoceramic<\/strong>, <strong>bone<\/strong> and <strong>even wood<\/strong>.<\/li>\n<li><strong>Applications<\/strong>:\n<ul>\n<li>They can be used to create various <strong>sensors or actuators<\/strong>.<\/li>\n<li>Piezoelectric transducers are common in <strong>ultrasonic applications<\/strong>, such as <strong>intrusion detectors and alarms.\u00a0<\/strong><\/li>\n<li>Piezoelectric devices are <strong>employed at AF<\/strong> (audio frequencies) <strong>as pickups<\/strong>, <strong>microphones<\/strong>, earphones, beepers, and buzzers.\u00a0<\/li>\n<li>In <strong>wireless applications<\/strong>, piezoelectricity makes it possible to <strong>use crystals and ceramics as oscillators<\/strong> <strong>that generate<\/strong> predictable and <strong>stable signals at RF<\/strong> (radio frequencies).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<hr \/>\n<h3>Q1)\u00a0What are Piezoelectric materials?<\/h3>\n<p>Piezoelectric materials are materials that have the ability to generate internal electrical charge from applied mechanical stress.\u200b The term \u200bpiezo\u200b is Greek for &#8220;push.&#8221;<\/p>\n<p><strong>Source:\u00a0<\/strong><a href=\"https:\/\/timesofindia.indiatimes.com\/city\/chennai\/iit-m-and-drdo-develop-underwater-sensor-technology\/articleshow\/100116820.cms\" target=\"_blank\" rel=\"nofollow noopener\"><u>IIT-M and DRDO develop underwater sensor technology<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Piezoelectricity is the appearance of an electrical potential across the sides of a crystal when you subject it to mechanical stress.<\/p>\n","protected":false},"author":5,"featured_media":10770,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-10769","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/10769","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=10769"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/10769\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/10770"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=10769"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=10769"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=10769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}