{"id":434093,"date":"2022-04-19T18:24:53","date_gmt":"2022-04-19T15:24:53","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/extremely-sensitive-nano-sensors-can-detect-trace-amounts-of-molecules\/"},"modified":"2022-04-19T18:24:53","modified_gmt":"2022-04-19T15:24:53","slug":"extremely-sensitive-nano-sensors-can-detect-trace-amounts-of-molecules","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/extremely-sensitive-nano-sensors-can-detect-trace-amounts-of-molecules\/","title":{"rendered":"#Extremely sensitive nano-sensors can detect trace amounts of molecules"},"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-6a261dd7ed94b\" 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-6a261dd7ed94b\" 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\/extremely-sensitive-nano-sensors-can-detect-trace-amounts-of-molecules\/#%E2%80%9CExtremely_sensitive_nano-sensors_can_detect_trace_amounts_of_molecules%E2%80%9D\" >&#8220;Extremely sensitive nano-sensors can detect trace amounts of molecules&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CExtremely_sensitive_nano-sensors_can_detect_trace_amounts_of_molecules%E2%80%9D\"><\/span>&#8220;Extremely sensitive nano-sensors can detect trace amounts of molecules&#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\/extremely-sensitive-na.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/extremely-sensitive-na.jpg\" data-sub-html=\"Silica-coated AuNR supraparticles as a tunable platform for sensing: the interparticle distance, mass- and heat-transport and plasmonic properties can all be tuned via the properties of the individual Au@SiO&lt;sub&gt;2&lt;\/sub&gt; NR building blocks. Credit: &lt;i&gt;Advanced Functional Materials&lt;\/i&gt; (2022). DOI: 10.1002\/adfm.202200148\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/extremely-sensitive-na.jpg\" alt=\"Extremely sensitive nano-sensors can detect trace amounts of molecules\" title=\"Silica-coated AuNR supraparticles as a tunable platform for sensing: the interparticle distance, mass- and heat-transport and plasmonic properties can all be tuned via the properties of the individual Au@SiO&lt;sub&gt;2&lt;\/sub&gt; NR building blocks. Credit: &lt;i&gt;Advanced Functional Materials&lt;\/i&gt; (2022). DOI: 10.1002\/adfm.202200148\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Silica-coated AuNR supraparticles as a tunable platform for sensing: the interparticle distance, mass- and heat-transport and plasmonic properties can all be tuned via the properties of the individual Au@SiO<sub>2<\/sub> NR building blocks. Credit: <i>Advanced Functional Materials<\/i> (2022). DOI: 10.1002\/adfm.202200148<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>Utrecht researchers have developed a new type of sensor, about 500 times smaller than the width of a human hair, with an unprecedented ability to detect extremely small amounts of molecules. These sensors can be used to detect and identify trace amounts of substances such as chemical pollutants or molecules important in medicine. The sensors make use of Raman scattering, a phenomenon that gives such unique signals for different molecules that it is often referred to as &#8220;molecular fingerprinting.&#8221; In their publication in <i>Advanced Functional Materials<\/i>, the researchers present the preparation and use of these tiny sensors.<\/p>\n<section class=\"article-banner first-banner ads-336x280\">\n         <!-- \/4988204\/Phys_Story_InText_Box --><\/p>\n<\/section>\n<p>Lead researcher Prof. Alfons van Blaaderen explains that their &#8220;design relies on the assembly of gold nanorods, which enhance the Raman scattering of molecules placed close to their tips tens of thousand times, into a larger spherical cluster in which the Raman signals are even further enhanced. A crucial step in the preparation was to first wrap each gold nanorod in its own protective porous coating. By controlling the thickness and porosity of this coating, we were able to control how closely the nanorods could be packed together, and how easy or difficult it is for molecules to enter into the sensor.&#8221; <\/p>\n<p><b>Small water droplets<\/b> <\/p>\n<p>Bringing the coated rods together in a nano-sensor was a key goal for lead authors Jessi van der Hoeven and Harith Gurunarayanan. Van der Hoeven explains that they &#8220;wanted to controllably form a spherical cluster out of these rods, where so-called &#8216;hot spots&#8217; for the Raman scattering would overlap and enhance the Raman signals even further. To do so, we put the rods in small water droplets. By slowly evaporating the water, the nanorods were forced to pack together into a spherical assembly.&#8221; <\/p>\n<figure class=\"mb-4\" itemscope=\"\" itemtype=\"http:\/\/schema.org\/VideoObject\">\n    <meta itemprop=\"name\" content=\"Extremely sensitive nano-sensors can detect trace amounts of molecules\"\/><br \/>\n    <meta itemprop=\"url\" content=\"https:\/\/scx2.b-cdn.net\/gfx\/video\/2022\/extremely-sensitive-na.mp4\"\/><br \/>\n    <meta itemprop=\"description\" content=\"A new type of nano-sensor: a 3D spherical &quot;supraparticle&quot; of gold nanorods. Credit: Utrecht University\"\/><br \/>\n    <meta itemprop=\"uploadDate\" content=\"2022-04-19T11:07:26-04:00\"\/><br \/>\n        <meta itemprop=\"thumbnailUrl\" content=\"\"\/><br \/>\n    <meta itemprop=\"contentUrl\" content=\"https:\/\/scx2.b-cdn.net\/gfx\/video\/2022\/extremely-sensitive-na.mp4\"\/><br \/>\n            <video class=\"embed-responsive embed-responsive-16by9\" id=\"jwVID69066\" controls=\"\"><source src=\"https:\/\/scx2.b-cdn.net\/gfx\/video\/2022\/extremely-sensitive-na.mp4\" type=\"video\/mp4\"><\/source><\/video><figcaption class=\"text-darken text-low-up mt-4\" itemprop=\"caption\">A new type of nano-sensor: a 3D spherical &#8220;supraparticle&#8221; of gold nanorods. Credit: Utrecht University<\/figcaption><\/figure>\n<p>Using this <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>roach, the researchers were able to prepare a whole range of differently structured nano-sensors. Gurunarayanan adds that they &#8220;were excited to see that these nanorod assemblies were not only pretty structures, but also very good at detecting very small quantities of molecules, better than previous assemblies of gold nanorods.&#8221; <\/p>\n<p>Because of the finger-printing capabilities of the Raman scattering analysis, these supraparticles\u2014particles built up from nanoparticles\u2014are suitable in many applications, ranging from investigating chemical mechanisms in catalysis to detecting trace amounts of chemical pollutants and molecules important in biology or medicine. It is important to mention that portable Raman scattering equipment, which is relatively expensive, is already available. <\/p>\n<p>Although the realized sensing supraparticles outperformed previously reported Raman sensing structures of gold nanorods, it is also exciting that there is still plenty of room for important improvements on this initial design. Many ideas are already being explored to further optimize the sensitivity and functionality of these assemblies. These Raman supraparticle sensors have literally and figuratively a bright future ahead.<\/p>\n<hr\/>\n<div class=\"article-main__explore my-4 d-print-none\">\n<p>                                            Scientists combine disciplines to pinpoint small structures in unlabeled molecules\n                                        <\/p><\/div>\n<hr class=\"mb-4\"\/>\n<div class=\"article-main__more p-4\">\n                                                                                                <strong>More information:<\/strong><br \/>\n                                                Jessi E.S. Hoeven et al, Silica\u2010Coated Gold Nanorod Supraparticles: A Tunable Platform for Surface Enhanced Raman Spectroscopy, <i>Advanced Functional Materials<\/i> (2022).  <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1002\/adfm.202200148\">DOI: 10.1002\/adfm.202200148<\/a><\/p><\/div>\n<div class=\"d-inline-block text-medium my-4\">\n                                                Provided by<br \/>\n                                                                                                    Utrecht University Faculty of <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"Science\" target=\"_blank\" rel=\"noopener\">Science<\/a><br \/>\n                                                                                                        <a rel=\"nofollow noopener\" target=\"_blank\" class=\"icon_open\" href=\"http:\/\/uu.nl\/science\"><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                                                 Extremely sensitive nano-sensors can detect trace amounts of molecules (2022, April 19)<br \/>\n                                                 retrieved 19 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-extremely-sensitive-nano-sensors-amounts-molecules.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-extremely-sensitive-nano-sensors-amounts-molecules.html\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;Extremely sensitive nano-sensors can detect trace amounts of molecules&#8221; Silica-coated AuNR supraparticles as a tunable platform for sensing: the interparticle distance, mass- and heat-transport and plasmonic properties can all be tuned via the properties of the individual Au@SiO2 NR building blocks. Credit: Advanced Functional Materials (2022). DOI: 10.1002\/adfm.202200148 Utrecht researchers have developed a new type&#8230;<\/p>\n","protected":false},"author":1,"featured_media":434094,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/extremely-sensitive-na.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-434093","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\/434093","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=434093"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/434093\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/434094"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=434093"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=434093"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=434093"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}