Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > New Microscope at Brookhaven Lab Promises Unprecedented Experimental Opportunities in Materials Science

Dan Fischer (left) and Raymond Browning show off the prototype of the Vector Potential Photoelectron Microscope.
Dan Fischer (left) and Raymond Browning show off the prototype of the Vector Potential Photoelectron Microscope.

Abstract:
A new class of x-ray photoelectron spectroscopic microscope has been developed at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory. The microscope will be used for advanced research on a wide range of technologically important materials systems. This new class of microscope was invented by Raymond Browning, of R. Browning Consultants and funded by National Institute of Standards and Technology (NIST) Small Business Innovation and Research (SBIR) contracts. A prototype of the new instrument, a Vector Potential Photoelectron Microscope (VPPEM), has been built in collaboration with the NIST Synchrotron Methods Group at the Laboratory's National Synchrotron Light Source (NSLS).

New Microscope at Brookhaven Lab Promises Unprecedented Experimental Opportunities in Materials Science

Upton, NY | Posted on November 29th, 2011

The new microscope uses a unique imaging method, and opens up many novel experimental possibilities. According to Browning, VPPEM potentially has a thousand times greater spatial resolution than current technology can provide, and is expected to be the world's most advanced general purpose x-ray photoelectron microscope when combined with NIST's beamline at Brookhaven's new light source, NSLS-II. Currently under construction, NSLS-II will be the most advanced synchrotron light source in the world when it begins operating by 2015.

VPPEM uses x-ray photoelectron spectroscopy to image the composition and chemistry of surfaces. These chemical properties determine the technologically valuable properties of a material, such as resistance to corrosion, usefulness in fuel cells, and also strength, and hardness. Such information obtained from VPPEM images can be used for semiconductor device defect analysis, inspection of surfaces used in medical practice, organic photovoltaic materials characterization, novel materials development, and general materials surface and interface analysis.

The VPPEM is unique because it uses a strong vector potential field created by a superconducting coil rather than a traditional lens system to magnify a sample. The vector potential field, which is a consequence of the electrical current flowing in the coil, forms a symmetric circular field in the center of the coil. VPPEM uses this symmetric field as a two-dimensional map, or spatial reference, for imaging samples.

Browning explained, "Unlike other microscopes, VPPEM does not 'focus' on the sample with a lens system, but magnifies the effects of the vector potential field on the photoelectrons emitted from the sample. When a sample's surface is irradiated with synchrotron-generated x-rays, the characteristic photoelectron energies emitted from surface atoms give a wealth of information about the type of atoms, chemical bonding, and, to a certain extent, the atomic structure of a material. At present, the VPPEM has successfully imaged uncoated silk, magnetic steel wool, gold mesh, and micron-sized tungsten wires."

The VPPEM's magnifying action has several advantages over conventional electron microscopy. For instance, the sample can be located at different places in the vector potential field and still be imaged. The sample is always in focus because there is no imaging lens to adjust. Relatively large, uneven samples can be imaged in this way, with little sample preparation.

NIST Synchrotron Methods Group Leader Dan Fischer, who has been helping to develop and test the prototype microscope, said, "Since it automatically focuses, it's easy to use, and no knowledge of synchrotrons is necessary. Because there is a long working distance between the lens and the sample, other probes and equipment can be placed in the VPPEM, as needed. When fully developed, this microscope will be a flagship instrument in NSLS-II that will enable nondestructive, three-dimensional mapping of nanomaterials and nanodevices."

Browning holds three patents, and has another three patents pending on the VPPEM. These patents are available for licensing. "I am looking for an industrial partner to develop the microscope and commercialize it," Browning said.

The development of the VPPEM was funded under several NIST SBIR awards with infrastructure support from DOE's Office of Science. Browning and NIST used beamline U4A, a dedicated instrumental development beamline supported by the NSLS for the project, and NSLS staff helped in constructing the equipment and operating the beamline. The Department's Office of Science is the single largest supporter of basic research in the physical sciences in the Unites States, and is working to address some of the most pressing challenges of our time. For more information, please visit science.energy.gov/.

####

About Brookhaven National Laboratory
One of ten national laboratories overseen and primarily funded by the Office of Science of the U.S. Department of Energy (DOE), Brookhaven National Laboratory conducts research in the physical, biomedical, and environmental sciences, as well as in energy technologies and national security. Brookhaven Lab also builds and operates major scientific facilities available to university, industry, and government researchers. Brookhaven is operated and managed for DOE's Office of Science by Brookhaven Science Associates, a limited-liability company founded by the Research Foundation of the State University of New York, for and on behalf of Stony Brook University, the largest academic user of Laboratory facilities; and Battelle Memorial Institute, a nonprofit, applied science and technology organization.

Visit Brookhaven Lab's electronic newsroom for links, news archives, graphics, and more (www.bnl.gov/newsroom), or follow Brookhaven Lab on Twitter (twitter.com/BrookhavenLab).

For more information, please click here

Contacts:
Diane Greenberg

(631) 344-2347
or
Peter Genzer

(631) 344-3174

Copyright © Brookhaven National Laboratory

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Iran to Hold 3rd Int'l Engineering Materials, Metallurgy Conference October 25th, 2014

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

SUNY Polytechnic Institute Invites the Public to Attend its Popular Statewide 'NANOvember' Series of Outreach and Educational Events October 23rd, 2014

Laboratories

National Synchrotron Light Source II Achieves 'First Light' October 23rd, 2014

Novel Rocket Design Flight Tested: New Rocket Propellant and Motor Design Offers High Performance and Safety October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Imaging

National Synchrotron Light Source II Achieves 'First Light' October 23rd, 2014

Govt.-Legislation/Regulation/Funding/Policy

Novel Rocket Design Flight Tested: New Rocket Propellant and Motor Design Offers High Performance and Safety October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Brookhaven Lab Launches Computational Science Initiative:Leveraging computational science expertise and investments across the Laboratory to tackle "big data" challenges October 22nd, 2014

Bipolar Disorder Discovery at the Nano Level: Tiny structures found in brain synapses help scientists better understand disorder October 22nd, 2014

Announcements

Iran to Hold 3rd Int'l Engineering Materials, Metallurgy Conference October 25th, 2014

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Tools

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

National Synchrotron Light Source II Achieves 'First Light' October 23rd, 2014

Advancing thin film research with nanostructured AZO: Innovnano’s unique and cost-effective AZO sputtering targets for the production of transparent conducting oxides October 23rd, 2014

NIST offers electronics industry 2 ways to snoop on self-organizing molecules October 22nd, 2014

Patents/IP/Tech Transfer/Licensing

Researchers patent a nanofluid that improves heat conductivity October 22nd, 2014

Nanodevices for clinical diagnostic with potential for the international market: The development is based on optical principles and provides precision and allows saving vital time for the patient October 15th, 2014

Aculon Receives Patent for Application of Enhanced Bonding Layers on Titanium October 9th, 2014

harmaEngine will join Nanobiotix’ pivotal trial for NBTXR3 in Soft Tissue Sarcoma to accelerate its development in Asia-Pacific: PharmaEngine to make milestone payment to Nanobiotix in October 2014 to recognize the value created October 8th, 2014

NanoNews-Digest
The latest news from around the world, FREE





  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More














ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE