Navigation Links
University of Illinois researchers develop AFM-IR for nanometer scale chemical identification
Date:3/8/2013

For more than 20 years, researchers have been using atomic force microscopy (AFM) to measure and characterize materials at the nanometer scale. However AFM-based measurements of chemistry and chemical properties of materials were generally not possible, until now.

Researchers at the University of Illinois at Urbana-Champaign report that they have measured the chemical properties of polymer nanostructures as small as 15 nm, using a novel technique called atomic force microscope infrared spectroscopy (AFM-IR). The article, "Atomic force microscope infrared spectroscopy on 15nm scale polymer nanostructures," appears in the Review of Scientific Instruments 84, published by the American Institute of Physics.

"AFM-IR is a new technique for measuring infrared absorption at the nanometer scale," explained William P. King, an Abel Bliss Professor in the Department of Mechanical Science and Engineering at Illinois. "The first AFM-based measurements could measure the size and shape of nanometer-scale structures. Over the years, researchers improved AFM to measure mechanical properties and electrical properties on the nanometer scale. However chemical measurements have lagged far behind, and closing this gap is a key motivation for our research.

"These infrared absorption properties provide information about chemical bonding in a material sample, and these infrared absorption properties can be used to identify the material," King added. "The polymer nanostructures are about an order of magnitude smaller than those measured previously."

The research is enabled by a new way to analyze the nanometer-scale dynamics within the AFM-IR system. The researchers analyzed the AFM-IR dynamics using a wavelet transform, which organizes the AFM-IR signals that vary in both time and in frequency. By separating the time and frequency components, the researchers were able to improve the signal to noise within AFM-IR and to thereby measure significantly smaller samples than previously possible.

The ability to measure the chemical composition of polymer nanostructures is important for a variety of applications, including semiconductors, composite materials, and medical diagnostics.


'/>"/>

Contact: William P. King
wpk@illinois.edu
217-244-3864
University of Illinois College of Engineering
Source:Eurekalert  

Related biology news :

1. University of Alberta researchers bake a better loaf of bread
2. UC Berkeley, UCSF and Stanford join forces to help commercialize university innovations
3. University of Colorado and Orphan Technologies sign agreement
4. Brown University researchers build robotic bat wing
5. Wayne State University researchers techniques enable more, faster testing of biological liquids
6. University of Arizona Engineering College pursues water technology innovation cluster
7. Brown University scientists to discuss resilience of coastal communities at AAAS
8. New Research Conducted by University Cancer Centers Links BP Refinery Incident to Increase Occurrence of Cancer in Texas City
9. University of Florida reports 2012 US shark attacks highest since 2000
10. Rice University lab show how blood vessels regroup after stroke
11. Sustaining Coastal Cities Conference at Northeastern University
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
University of Illinois researchers develop AFM-IR for nanometer scale chemical identification
(Date:6/15/2016)... York , June 15, 2016 ... new market report titled "Gesture Recognition Market by Application ... Forecast, 2016 - 2024". According to the report, the  ... 11.60 billion in 2015 and is estimated to ... USD 48.56 billion by 2024.  Increasing ...
(Date:6/7/2016)... , June 7, 2016  Syngrafii Inc. ... a business relationship that includes integrating Syngrafii,s patented ... branch project. This collaboration will result in greater ... the credit union, while maintaining existing document workflow ... http://photos.prnewswire.com/prnh/20160606/375871LOGO ...
(Date:6/2/2016)... --  The Weather Company , an IBM Business (NYSE: ... in which consumers will be able to interact with IBM ... voice or text and receive relevant information about the product ... have long sought an advertising solution that can create a ... and valuable; and can scale across millions of interactions and ...
Breaking Biology News(10 mins):
(Date:12/2/2016)... (PRWEB) , ... December 01, 2016 , ... ... congratulate long-term client Nanowear on their recent FDA Class II 510(k) clearance for ... a significant hurdle in commercializing remote cardiac monitoring devices that rely on cloth-based ...
(Date:12/2/2016)...   SurePure, Inc. (OTCQB: SURP) a global ... has concluded an agreement with Tamarack Biotics under which ... to acquire units of the Company,s patented photopurification technology ... Concurrently with the option, SurePure has ... will seek regulatory approvals in the United ...
(Date:11/30/2016)... ... November 30, 2016 , ... BEI ... Coil Actuator with a flexure design that ensures high alignment accuracy by preventing ... and is ideally suited where extreme precision is required, such as in medical ...
(Date:11/30/2016)... 2016 /PRNewswire/ - Portage Biotech Inc. ("Portage" or "the ... excited to announce the formation of EyGen, Ltd. ... ophthalmology assets through proof of concept. EyGen,s lead ... Portage Pharmaceuticals Limited and being developed for topical ... anterior segment diseases. This agent has the potential ...
Breaking Biology Technology: