{"id":16522,"date":"2023-10-31T05:52:08","date_gmt":"2023-10-31T00:22:08","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=16522"},"modified":"2025-04-04T19:59:41","modified_gmt":"2025-04-04T14:29:41","slug":"carbon-nanoflorets","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/carbon-nanoflorets\/","title":{"rendered":"Carbon nanoflorets"},"content":{"rendered":"<h2>About Carbon nanoflorets<\/h2>\n<ul>\n<li>These are like tiny marigold flowers\u00a0made only of carbon which are called as the material carbon nanoflorets.<\/li>\n<li>Process of synthesis\n<ul>\n<li>Researchers heated a special form of\u00a0silicon dust called DFNS (for dendritic fibrous nanosilica) in a furnace.<\/li>\n<li>Once heated, she introduced acetylene gas into the chamber.<\/li>\n<li>The white powder turned black \u2013 a sign that carbon had been deposited on the DFNS.<\/li>\n<li>Then they collected the black powder and treated it with a strong chemical that dissolved the DFNS away, leaving carbon particles behind.<\/li>\n<\/ul>\n<\/li>\n<li>The structure of the silicon particles \u2013 50-1,200 nanometers in size \u2013 resembled spikes arranged around a sphere.\u00a0<\/li>\n<li>Observation\n<ul>\n<li>They reported that these nanoflorets could\u00a0absorb sunlight at many frequencies and\u00a0convert it to heat with an unprecedented efficiency.<\/li>\n<li>The nanoflorets also didn\u2019t easily dissipate the heat generated into the environment, making the material a good candidate to heat.\u00a0<\/li>\n<li>The nanoflorets\u00a0converted the light energy they absorbed into thermal energy\u00a0\u2013 a process called solar-thermal conversion \u2013 with a remarkable efficiency of 87%.<\/li>\n<\/ul>\n<\/li>\n<li>The carbon\u00a0nanoflorets\u2019 high efficiency comes\u00a0from three properties.\n<ul>\n<li>The nanoflorets\u00a0absorb three frequencies in sunlight \u2013 infrared, visible light,\u00a0and ultraviolet while other common materials absorb only visible and ultraviolet light.<\/li>\n<li>Shape: As light falls on the material, the carbon cones ensure that very little is reflected back.<\/li>\n<li>Long-range disorder: Parts of the structure at some distance from each other possess\u00a0different physical properties.\u00a0As a result, heat waves in the material aren\u2019t carried over long distances,\u00a0reducing the amount of heat dissipated away.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>Q1) What is Infrared (IR) radiation?<\/h3>\n<p>It is a part of the electromagnetic spectrum that lies between visible light and microwaves. It has wavelengths longer than those of visible light, ranging from approximately 0.7 micrometers (microns) to 1 millimeter. Infrared radiation is invisible to the human eye but can be detected and utilized in various scientific, industrial, and technological applications.<\/p>\n<p><strong>Source:<\/strong> <a href=\"https:\/\/www.thehindu.com\/sci-tech\/science\/carbon-nanoflorets-iit-bombay-solar-thermal-conversation-high-efficiency\/article67472739.ece\" target=\"_blank\" rel=\"nofollow noopener\">Tiny carbon \u2018flowers\u2019 turn light to heat at unrivalled efficiency, IIT team finds<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Carbon nanoflorets are like tiny marigold flowers made only of carbon which are called the material carbon nanoflorets.<\/p>\n","protected":false},"author":5,"featured_media":16523,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-16522","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\/16522","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=16522"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/16522\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/16523"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=16522"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=16522"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=16522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}