{"id":262720,"date":"2026-06-03T03:36:00","date_gmt":"2026-06-03T07:36:00","guid":{"rendered":"https:\/\/news-you-need.com\/index.php\/2026\/06\/03\/rethinking-rectification-for-future-energy-technology-physics-world\/"},"modified":"2026-06-03T05:10:44","modified_gmt":"2026-06-03T09:10:44","slug":"rethinking-rectification-for-future-energy-technology-physics-world","status":"publish","type":"post","link":"https:\/\/news-you-need.com\/index.php\/2026\/06\/03\/rethinking-rectification-for-future-energy-technology-physics-world\/","title":{"rendered":"Rethinking rectification for future energy technology \u2013 Physics World"},"content":{"rendered":"<p><a href=\"https:\/\/physicsworld.com\/a\/rethinking-rectification-for-future-energy-technology\/\">Rethinking rectification for future energy technology \u2013 Physics World<\/a><\/p>\n<p><a href=\"https:\/\/physicsworld.com\/a\/rethinking-rectification-for-future-energy-technology\/\">https:\/\/physicsworld.com\/a\/rethinking-rectification-for-future-energy-technology\/<\/a><\/p>\n<p>Publish Date: <a href=\"publish_date]\">2026-06-03 03:36:00<\/a><\/p>\n<p>Source Domain: <a href=\"physicsworld.com\">physicsworld.com<\/a><\/p>\n<p>Third-order optical effects enable light-to-DC conversion in common symmetric materials, opening new pathways for photodetection, terahertz sensing, and energy harvesting<\/p>\n<p>\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/physicsworld.com\/wp-content\/uploads\/2026\/06\/light-bulb-and-LEDs-17321529-iStock-635x423.jpg\" srcset=\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\thttps:\/\/physicsworld.com\/wp-content\/uploads\/2026\/06\/light-bulb-and-LEDs-17321529-iStock.jpg 849w,\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\thttps:\/\/physicsworld.com\/wp-content\/uploads\/2026\/06\/light-bulb-and-LEDs-17321529-iStock-635x423.jpg 635w\" sizes=\"(max-width: 768px) 100vw, 635w\" alt=\"Green light bulb\" title=\"Green light bulb\" width=\"635\" height=\"423\"\/><\/p>\n<p>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tGreen light bulb (Courtesy: iStock\/Peter Macs)<\/p>\n<p>Rectification is the process of turning alternating current (AC) signals into direct current (DC), and it underpins technologies such as wireless power transfer, photodetection, terahertz sensing, and energy harvesting. To generate a one-directional current, a material normally needs a built-in directional preference for electron motion. This preference usually arises from broken inversion symmetry, meaning that the material is not identical under spatial inversion. For example, graphene has inversion symmetry, while materials with inequivalent sublattices, intrinsic electric dipoles, surfaces, or interfaces naturally break it. When inversion symmetry is broken, electrons can respond differently to opposite directions of an applied light field, allowing oscillating optical fields to generate a DC current.<\/p>\n<p>In this work, the researchers show that this rule has an important exception. Even centrosymmetric bulk materials can rectify light through third-order nonlinear optical effects. Linear optical responses scale with the applied light field. Second-order responses depend on the square of the electric field and can mix frequencies or generate harmonics, but they are usually forbidden in centrosymmetric bulk materials. Third-order responses, however, are symmetry allowed and can generate DC photocurrents even when inversion symmetry is present. These currents are controlled by the shape of the Fermi surface, disorder, and the geometry of electronic bands. This means that materials once considered unsuitable for bulk optical rectification, including common metals, doped systems, and&#8230;<\/p>\n<p><a href=\"https:\/\/physicsworld.com\/a\/rethinking-rectification-for-future-energy-technology\/\">Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rethinking rectification for future energy technology \u2013 Physics World https:\/\/physicsworld.com\/a\/rethinking-rectification-for-future-energy-technology\/ Publish Date: 2026-06-03 03:36:00 Source&#8230;<\/p>\n","protected":false},"author":1,"featured_media":262721,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/physicsworld.com\/wp-content\/uploads\/2026\/06\/light-bulb-and-LEDs-17321529-iStock.jpg","fifu_image_alt":"","footnotes":""},"categories":[8],"tags":[64],"class_list":["post-262720","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology","tag-energy"],"_links":{"self":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/262720"}],"collection":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/comments?post=262720"}],"version-history":[{"count":1,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/262720\/revisions"}],"predecessor-version":[{"id":262722,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/262720\/revisions\/262722"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/media\/262721"}],"wp:attachment":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/media?parent=262720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/categories?post=262720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/tags?post=262720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}