{"id":67337,"date":"2015-08-10T14:11:20","date_gmt":"2015-08-10T18:11:20","guid":{"rendered":"https:\/\/www.ucf.edu\/news\/?p=67337"},"modified":"2022-05-17T15:12:00","modified_gmt":"2022-05-17T19:12:00","slug":"researcher-uses-vibrations-to-identify-materials-composition","status":"publish","type":"post","link":"https:\/\/www.ucf.edu\/news\/researcher-uses-vibrations-to-identify-materials-composition\/","title":{"rendered":"Researcher Uses Vibrations to Identify Materials\u2019 Composition"},"content":{"rendered":"<p>A team that includes a <a href=\"https:\/\/www.ucf.edu\/research\/\">researcher now at the University of Central Florida<\/a> has developed a new method for identifying materials\u2019 unique chemical \u201cfingerprints\u201d and mapping their chemical properties at a much higher spatial resolution than ever before.<\/p>\n<p>It\u2019s a discovery that could have promising implications for fields as varied as biofuel production, solar energy, opto-electronic devices, pharmaceuticals and medical research.<\/p>\n<p>\u201cWhat we\u2019re interested in is the tools that allow us to understand the world at a very small scale,\u201d said UCF professor Laurene Tetard, formerly of the Oak Ridge National Laboratory. \u201cNot just the shape of the object, but its mechanical properties, its composition and how it evolves in time.\u201d<\/p>\n<p>For more than two decades, scientists have used <a href=\"https:\/\/www.ucf.edu\/nanotechnology-research-innovation\/\">atomic force microscopy<\/a> \u2013 a probe that acts like an ultra-sensitive needle on a record player \u2013 to determine the surface characteristics of samples at the microscopic scale. A \u201cneedle\u201d that comes to an atoms-thin point traces a path over a sample, mapping the surface features at a sub-cellular level.<\/p>\n<p>But that technology has its limits. It can determine the topographical characteristics of a sample, but it can\u2019t identify its composition. And with the standard tools currently used for chemical mapping, anything smaller than roughly half a micron is going to look like a blurry blob, so researchers are out of luck if they want to study what\u2019s happening at the molecular level.<\/p>\n<p>A team at Oak Ridge National Laboratory that included Tetard has come up with a hybrid form of that technology that produces a much clearer chemical image. As described Monday\u00a0in the journal Nature Nanotechnology, Hybrid Photonic-Nanomechanical Force Microscopy (HPFM) can discern a sample\u2019s topographic characteristics together with the chemical properties at a much finer scale.<\/p>\n<p>The HPFM method is able to identify materials based on differences in the vibration produced when they\u2019re subjected to different wavelengths of light \u2013 essentially a material\u2019s unique \u201cfingerprint.\u201d<\/p>\n<p>\u201cWhat we are developing is a completely new way of making that detection possible,\u201d said Tetard, who has joint appointments to UCF\u2019s Physics Department, Material Science and Engineering Department and the NanoScience Technology Center.<\/p>\n<p>The researchers proved the effectiveness of HPFM while examining samples from an eastern cottonwood tree, a potential source of biofuel. By examining the plant samples at the nanoscale, the researchers for the first time were able to determine the molecular traits of both untreated and chemically processed cottonwood inside the plant cell walls.<\/p>\n<p>The research team included Tetard; Ali Passian, R.H. Farahi and Brian Davison, all of Oak Ridge National Laboratory; and Thomas Thundat of the University of Alberta.<\/p>\n<p>Long term, the results will help reveal better methods for producing the most biofuel from the cottonwood, a potential boon for industry. Likewise, the new method could be used to examine samples of myriad plants to determine whether they\u2019re good candidates for biofuel production.<\/p>\n<p>Potential uses of the technology go beyond the world of biofuel. Continued research may allow HPFM to be used as a probe so, for instance, it would be possible to study the effect of new treatments being developed to save plants such as citrus trees from bacterial diseases rapidly decimating the citrus industry, or study fundamental photonically-induced processes in complex systems such as in solar cell materials or opto-electronic devices.<\/p>\n","protected":false},"excerpt":{"rendered":"A team that includes a researcher now at the University of Central Florida has developed a new method for identifying materials\u2019 unique chemical \u201cfingerprints\u201d and mapping their chemical properties at a much higher spatial resolution than ever before. It\u2019s a discovery that could have promising implications for fields as varied as biofuel production, solar energy, opto-electronic devices, pharmaceuticals and medical&hellip;","protected":false},"author":30,"featured_media":67339,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"template-twocol.php","format":"standard","meta":{"_acf_changed":false,"lazy_load_responsive_images_disabled":false,"footnotes":"","_links_to":"","_links_to_target":"","_wp_rev_ctl_limit":""},"categories":[5,23,24],"tags":[13797,3279,3715],"tu_author":[],"class_list":["post-67337","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-colleges","category-research","category-science-technology","tag-materials-science-and-engineering","tag-nanoscience-technology-center","tag-physics"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.3 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ 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