{"id":437279,"date":"2022-04-25T22:08:56","date_gmt":"2022-04-25T19:08:56","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/controlling-heat-flow-in-a-solid-by-switching-crystal-structure-dimensionality\/"},"modified":"2022-04-25T22:08:56","modified_gmt":"2022-04-25T19:08:56","slug":"controlling-heat-flow-in-a-solid-by-switching-crystal-structure-dimensionality","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/controlling-heat-flow-in-a-solid-by-switching-crystal-structure-dimensionality\/","title":{"rendered":"#Controlling heat flow in a solid by switching crystal structure dimensionality"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a279d5c8a075\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a279d5c8a075\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/controlling-heat-flow-in-a-solid-by-switching-crystal-structure-dimensionality\/#%E2%80%9CControlling_heat_flow_in_a_solid_by_switching_crystal_structure_dimensionality%E2%80%9D\" >&#8220;Controlling heat flow in a solid by switching crystal structure dimensionality&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CControlling_heat_flow_in_a_solid_by_switching_crystal_structure_dimensionality%E2%80%9D\"><\/span>&#8220;Controlling heat flow in a solid by switching crystal structure dimensionality&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/controlling-heat-flow.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/controlling-heat-flow.jpg\" data-sub-html=\"Credit: Tokyo Tech\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/controlling-heat-flow.jpg\" alt=\"Controlling heat flow in a solid by switching crystal structure dimensionality\" title=\"Credit: Tokyo Tech\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Credit: Tokyo Tech<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>Just as an electrical switch regulates the flow of electric current, thermal switches can control the flow of heat. These switches serve as thermal control devices and are useful for thermal management <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>lications. For example, they can be used in industries to reduce waste heat, resulting in cost and energy savings. These switches require materials whose thermal conductivity (\u03ba) can be modulated to a large extent. This would allow the switch to have an &#8220;on&#8221; and &#8220;off&#8221; state depending on the thermal conductivity. However, such materials are rare and challenging to develop, and those that have been developed show only small reversible variations in their \u03ba.<\/p>\n<section class=\"article-banner first-banner ads-336x280\">\n         <!-- \/4988204\/Phys_Story_InText_Box --><\/p>\n<\/section>\n<p>Now, in a study published in <i>Advanced Electronic Materials<\/i>, researchers from Tokyo Institute of <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/technology\/\" data-internallinksmanager029f6b8e52c=\"4\" title=\"Technology\" target=\"_blank\" rel=\"noopener\">Technology<\/a> (Tokyo Tech) and the National Institute for Materials <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"Science\" target=\"_blank\" rel=\"noopener\">Science<\/a>, Japan, have taken things to the next level with a material that can achieve a large variation in its \u03ba by changing its crystal structure dimensionality. The team achieved this remarkable feat by using a solid solution of lead selenide (PbSe) and tin selenide (SnSe), which can switch between a 3-dimensional (3D) cubic crystal structure and a 2-dimensional (2D) layered crystal structure with changes in temperature.<\/p>\n<p>In solids, heat is transported by two different processes, namely the vibrations of the crystalline lattice, and the flow of electric charge carriers. Therefore, the thermal conductivity of a solid depends on both the crystal structure and electronic structure.<\/p>\n<p>In their study, the researchers were able to obtain different \u03ba values in a (Pb<sub>0.5<\/sub>Sn<sub>0.5<\/sub>)Se alloy by changing the crystal structure dimensionality owing to the different arrangements of atoms and band gaps in each crystal structure relative to the other. &#8220;The material we chose for our study is bulk polycrystals of (Pb<sub>0.5<\/sub>Sn<sub>0.5<\/sub>)Se, which shows a direct phase boundary between the 3D and 2D crystal structures. We achieved this by thermally quenching the high-temperature solid solution phase to room temperature,&#8221; explains Professor Takayoshi Katase from Tokyo Tech, who was involved with the study.<\/p>\n<p>The researchers could reversibly switch between the 3D and 2D crystal structure dimensionalities of the (Pb<sub>0.5<\/sub>Sn<sub>0.5<\/sub>)Se polycrystals by simply heating and cooling the material. In the heated state, the material assumed a 3D crystal structure with a metallic electronic structure, which resulted in a high electronic as well as lattice thermal conductivity. When cooled, on the other hand, it changed to a 2D crystal structure with a semiconducting electronic structure and a largely reduced \u03ba. At a temperature of 373 K (100\u00b0C), the \u03ba  for the 3D phase was observed to be 3.6 times higher than that for the 2D phase.<\/p>\n<p>This new approach to altering \u03ba could pave the way for the design of more such materials with potential applications in thermal management. &#8220;We believe that the present strategy will lead to a novel concept for designing thermal switching material through changing the crystal-structure dimensionality across non-equilibrium phase boundaries,&#8221; says Prof. Katase.<\/p>\n<hr\/>\n<div class=\"article-main__explore my-4 d-print-none\">\n<p>                                            Giant electronic conductivity change driven by artificial switch of crystal dimensionality\n                                        <\/p><\/div>\n<hr class=\"mb-4\"\/>\n<div class=\"article-main__more p-4\">\n                                                                                                <strong>More information:<\/strong><br \/>\n                                                Yusaku Nishimura et al, Electronic and Lattice Thermal Conductivity Switching by 3D\u22122D Crystal Structure Transition in Nonequilibrium (Pb 1\u2212 x Sn x)Se, <i>Advanced Electronic Materials<\/i> (2022).  <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1002\/aelm.202200024\">DOI: 10.1002\/aelm.202200024<\/a><\/p><\/div>\n<div class=\"d-inline-block text-medium my-4\">\n                                                Provided by<br \/>\n                                                                                                    Tokyo Institute of Technology<br \/>\n                                                                                                        <a rel=\"nofollow noopener\" target=\"_blank\" class=\"icon_open\" href=\"http:\/\/www.titech.ac.jp\/\"><br \/>\n                                                        <svg>\n                                                            <use href=\"https:\/\/phys.b-cdn.net\/tmpl\/v6\/img\/svg\/sprite.svg#icon_open\" x=\"0\" y=\"0\"\/>\n                                                        <\/svg><br \/>\n                                                    <\/a><\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                 <strong>Citation<\/strong>:<br \/>\n                                                 Controlling heat flow in a solid by switching crystal structure dimensionality (2022, April 25)<br \/>\n                                                 retrieved 25 April 2022<br \/>\n                                                 from https:\/\/phys.org\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2022-04-solid-crystal-dimensionality.html<\/p>\n<p>                                            This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no<br \/>\n                                            part may be reproduced without the written permission. The content is provided for information purposes only.<\/p><\/div>\n<\/p><\/div>\n<p><script id=\"facebook-jssdk\" async=\"\" src=\"https:\/\/connect.facebook.net\/en_US\/sdk.js\"><\/script><\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMLG0nwswvr63Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\">For forums sites go to <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/forum.buradabiliyorum.com\/\" target=\"_blank\" rel=\"noopener\">Forum.BuradaBiliyorum.Com<\/a><\/span><\/strong>\n<\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more Like this articles, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/science\/\" target=\"_blank\" rel=\"noopener\">Science category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/phys.org\/news\/2022-04-solid-crystal-dimensionality.html\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;Controlling heat flow in a solid by switching crystal structure dimensionality&#8221; Credit: Tokyo Tech Just as an electrical switch regulates the flow of electric current, thermal switches can control the flow of heat. These switches serve as thermal control devices and are useful for thermal management applications. For example, they can be used in industries&#8230;<\/p>\n","protected":false},"author":1,"featured_media":437280,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/controlling-heat-flow.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-437279","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/437279","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=437279"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/437279\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/437280"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=437279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=437279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=437279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}