Navigation Links
Next-generation chemical mapping on the nanoscale
Date:3/29/2011

A pixel is worth a thousand words? Not exactly how the saying goes, but in this case, it holds true: scientists at Berkeley Lab's Molecular Foundry have pioneered a new chemical mapping method that provides unprecedented insight into materials at the nanoscale. Moving beyond traditional static imaging techniques, which provide a snapshot in time, these new maps will guide researchers in deciphering molecular chemistry and interactions at the nanoscalecritical for artificial photosynthesis, biofuels production and light-harvesting applications such as solar cells.

"This new technique allows us to capture very high-resolution images of nanomaterials with a huge amount of physical and chemical information at each pixel," says Alexander Weber-Bargioni, a postdoctoral scholar in the Imaging and Manipulation of Nanostructures Facility at the Foundry. "Usually when you take an image, you just get a picture of what this material looks like, but nothing more. With our method, we can now gain information about the functionality of a nanostructure with rich detail."

The Molecular Foundry is a U.S. Department of Energy (DOE) Office of Science nanoscience center and national user facility. With the Foundry's state-of-the-art focused ion beam tool at their disposal, Weber-Bargioni and his team designed and fabricated a coaxial antenna capable of focusing light at the nanoscale, - a harnessing of light akin to wielding a sharp knife in a thunderstorm, Weber-Bargioni says.

Consisting of gold wrapped around a silicon nitride atomic force microscope tip, this coaxial antenna serves as an optical probe for structures with nanometer resolution for several hours at a time. What's more, unlike other scanning probe tips, it provides enough enhancement, or light intensity, to report the chemical fingerprint at each pixel while collecting an image (typically 256 x 256 pixels). This data is then used to generate multiple composition-related "maps," each with a wealth of chemical information at every pixel, at a resolution of just twenty nanometers. The maps provide information that is critical for examining nanomaterials, in which local surface chemistry and interfaces dominate behavior.

"Fabricating reproducible near-field optical microscopy probes has always been a challenge," says Frank Ogletree, acting Facility Director of the Imaging and Manipulation of Nanostructures Facility at the Foundry. "We now have a high-yield method to make engineered plasmonic probes for spectroscopy on a variety of surfaces."

To test out the capability of their new probe, the team examined carbon nanotubes, sheets of carbon atoms rolled tightly into tubes just a few nanometers in diameter. Carbon nanotubes are ideal for this type of interactive investigation as their unmatched electronic and structural properties are sensitive to localized chemical changes.

Users coming to the Molecular Foundry to seek information about light-harvesting materials or any dynamic system should benefit from this imaging system, Weber-Bargioni says.

Adds Jim Schuck, staff scientist in the Imaging and Manipulation of Nanostructures Facility at the Foundry, "We're very excitedthis new nano-optics capability enables us to explore previously inaccessible properties within nanosystems. The work reflects a major strength of the Molecular Foundry, where collaboration between scientists with complementary expertise leads to real nanoscience breakthroughs."


'/>"/>

Contact: Aditi Risbud
asrisbud@lbl.gov
510-486-4861
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Related biology technology :

1. MicuRx Pharmaceuticals Selects Next-Generation Antibiotic Candidate Targeting MRSA and Expands Operation in China
2. Isilon IQ Powers Data Storage for Next-Generation DNA Sequencing
3. Capture of nanomagnetic fingerprints a boost for next-generation information storage media
4. Automated Sequence Capture for Next-Generation Sequencing Paves the Way for Personalized Medicine
5. Enerkem announces plans to enter the United States with next-generation biofuels project in Mississippi
6. Cell Biosciences Launches Next-Generation Protein Characterization System
7. VisEn Launches Next-Generation Fast (Fluorescence Activatible Sensor Technology) Agent Platform for Expanded Performance in Imaging Disease Biomarkers In Vivo
8. SeqWright Expands into the Genetically-Targeted Therapy Field by Partnering with PharmaGenoma to Provide Next-Generation Hair Loss Treatment Genetic Testing
9. FDA Approves Boston Scientifics Next-Generation TAXUS(R) Liberte(R) Atom(TM) Stent System
10. Angiotech Pharmaceuticals announces FDA approval of next-generation TAXUS(R) Liberte(R) Atom(TM) Stent system
11. Advanced Instruments Introduces Next-Generation Web Site
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Next-generation chemical mapping on the nanoscale
(Date:10/12/2017)... ... October 12, 2017 , ... The ... three Winners and six Finalists of the 2017 Blavatnik Regional Awards for Young ... Family Foundation and administered by the New York Academy of Sciences to honor ...
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... Surgical Wound Market with the addition of its newest module, US Hemostats & ... market for thrombin hemostats, absorbable hemostats, fibrin sealants, synthetic sealants and biologic sealants ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... Andi Purple announced Dr. Suneel I. Sheikh, the co-founder, CEO and chief research ... Inc. has been selected for membership in ARCS Alumni Hall of Fame ...
(Date:10/11/2017)... CA, USA (PRWEB) , ... October 11, 2017 , ... ... to take place on 7th and 8th June 2018 in San Francisco, CA. The ... influencers as well as several distinguished CEOs, board directors and government officials from around ...
Breaking Biology Technology:
(Date:4/24/2017)... , April 24, 2017 Janice ... partner with  Identity Strategy Partners, LLP (IdSP) , ... or without President Trump,s March 6, 2017 ... Entry , refugee vetting can be instilled with greater ... (Right now, all refugee applications are suspended by ...
(Date:4/13/2017)... Calif. , April 13, 2017 UBM,s ... York will feature emerging and evolving technology ... Both Innovation Summits will run alongside the expo portion ... speaker sessions, panels and demonstrations focused on trending topics ... largest advanced design and manufacturing event will take place ...
(Date:4/11/2017)... , April 11, 2017 No two ... researchers at the New York University Tandon School ... Engineering have found that partial similarities between prints ... used in mobile phones and other electronic devices ... The vulnerability lies in the fact that ...
Breaking Biology News(10 mins):