",{"id":"SIGNIN"}).html('
×
').appendTo("body");jQuery("#SIGNIN").on('click',function(e){closeLogin()})},closeLogin=function(){jQuery("#SIGNIN").remove();jQuery("body").css("overflow","inherit")},adjustLoginHeight=function(h){jQuery("#Oframe").height(h)},login_success=function(sess){jQuery(".sign-up").html("LOGOUT").on('click',function(){location.href="https://signin."+DOMAIN+"/oauth/logout"});closeLogin()},LANG='en',commentHeight=function(data){jQuery("#block-ibt-comment iframe").height(data.height)};var login_success=function(sess){closeLogin();jQuery("article").removeClass("wall");jQuery(".login-btn .sign-up2").hide();jQuery(".login-btn .myaccount").show();jQuery(".only-before-login").hide();if(typeof sess=='object'){sess=sess.sess};jQuery("
",{"id":"TEMPE"}).html('').appendTo("body");jQuery("#TEMPE iframe").on("load",function(){jQuery("#TEMPE").remove();if(jQuery("iframe.comment").length){jQuery("iframe.comment").get(0).contentWindow.postMessage({'action':'success',},'*')}});afterLogin()};function afterLogin(){};doFir.push(function(){jQuery(document).ready(function(){jQuery(".sign-up2").on('click',function(e){e.preventDefault();e.stopPropagation();openLogin('https://signin.'+DOMAIN.replace(/ibtimes\.[\.a-z]+/,'ibtimes.com')+'/oauth?l='+jQuery(this).attr('data-lang'))})})})
A new metamaterial discovered by researchers from ANU glows unusually when exposed to heat. This artificial material could open potential developments on thermophotovoltaic cells that produce electricity from harvested heat even in dark conditions.