Navigation Links
Story tips from the Departments of Energy's Oak Ridge National Lab -- March 2009
Date:3/2/2009

MATERIALS -- Entering a new domain . . .

With the aid of a one-of-a-kind instrument at Oak Ridge National Laboratory's Center for Nanophase Materials Sciences, scientists have made a series of discoveries that could open new pathways for nanoscale electronics. The study, published in Nature Materials (http://www.nature.com/nmat/journal/vaop/ncurrent/abs/nmat2373) and led by Ramamoorthy Ramesh of Lawrence Berkeley National Laboratory, has revealed that domain walls in a material called bismuth ferrite possess an unexpected electron conductance. The nanometer-scale domain walls separate the regions of a material with different magnetic, electric and other properties. Scientists believe that they hold a key to making great strides in logic and memory functions of tomorrow's electronic devices. Leading the collaborative effort from ORNL was the team of Peter Maksymovych, a Wigner fellow, and Sergei Kalinin. The ORNL team is pursuing the fundamental polarization and transport behaviors of ferroelectric materials, of which this and a recent study of local polarization switching are the first examples. This research was funded by the Office of Basic Energy Sciences within the Department of Energy's Office of Science. [Contact: Ron Walli, (865) 576-0226; wallira@ornl.gov]


ENERGY -- Hydrogen shake . . .

Hydrogen for transportation may have received a boost with the discovery of an enzyme cocktail that converts cellulosic materials and water into hydrogen fuel. A team of researchers from Virginia Tech, Oak Ridge National Laboratory and the University of Georgia report in the journal ChemSusChem (Chemistry and Sustainability) that by mixing 14 enzymes, one co-enzyme, cellulosic materials isolated from wood chips and water heated to 90 degrees Fahrenheit, they produced hydrogen gas pure enough to power a fuel cell. Cellulosic material from crop waste or switchgrass could also be used, making this potential source of energy even more economically feasible, according to the research team led by Virginia Tech. ORNL's Barbara Evans and Jonathan Mielenz of the Chemical and Biosciences divisions, respectively, are co-authors of the paper. This work improves and extends to cellulose the concept for enzymatic production of hydrogen from glucose pioneered by ORNL and funded by the Department of Energy's Office of Energy Efficiency and Renewable Energy. Research for this latest project was provided by Percival Zhang's (Virginia Tech) DuPont Young Professor Award and the Air Force Office of Scientific Research. [Contact: Ron Walli, (865) 576-0226; wallira@ornl.gov]


MATERIALS -- Blown away . . .

An Oak Ridge National Laboratory study of structural damage from Hurricane Ike in 2008 shows that buildings with large openings such as garages and loading docks are more prone to hurricane damage -- even if the structure's construction meets local building codes. The findings by ORNL engineer Andre Desjarlais are part of a report by the Roof Industry Committee on Weather Issues on damages from Hurricane Ike. According to the report, set for release this month, wind rushing into the large openings pressurizes the building, adding more force on the roof and increasing the likelihood for damages. Post-hurricane construction damage assessments to learn more about why the buildings failed are continuing. The ORNL study is funded by the Department of Energy's Office of Building Technologies. [Contact: Fred Strohl; (865) 574-4165; strohlhf@ornl.gov]


MATERIALS -- Bulk metallic insight . . .

A combination of neutron, X-ray and atom-probe analysis has given researchers previously inaccessible insight to the atomic structure of a new multicomponent bulk metallic glass. The research by a team led by Xun-Li Wang of the Department of Energy's Oak Ridge National Laboratory has revealed the structure of the complex alloy comprising zirconium, copper, nickel, aluminum and titanium with potential applications from biomedical devices to sports equipment to aerospace structures. When fabricated under exact conditions, the alloy, which would normally be crystalline, becomes amorphous--a metallic glass--with special properties. The researchers combined data from the separate methods to gain a better understanding of the structure behind the material's unique properties, which could lead to further, more useful advanced materials. The research, funded by DOE Office of Science, Basic Energy Science program, is featured on the cover of the current issue of the journal Advanced Materials. [Contact: Bill Cabage; (865) 574-4399, cabagewh@ornl.gov]


'/>"/>

Contact: Ron Walli
wallira@ornl.gov
865-576-0226
DOE/Oak Ridge National Laboratory
Source:Eurekalert

Related biology news :

1. Chantix side effects no worse with depression history
2. NJIT history professor receives national endowment for humanities
3. Italys geologic history becomes a personal tale in Walter Alvarezs new book
4. Human connection to our nations fisheries comes alive through oral history project
5. The hole story
6. The "hole" story
7. Revealing the evolutionary history of threatened sea turtles
8. New study indicates link between weight gains during pregnancy and dieting history
9. Research pushes back history of crop development 10,000 years
10. Story tips from the Department of Energys Oak Ridge National Laboratory, September 2008
11. NYU, American Museum of Natural History receive $1.6 million NSF grant
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/21/2016)... VANCOUVER, British Columbia , June 21, 2016 ... been appointed to the new role of principal ... has been named the director of customer development. ... , NuData,s chief technical officer. The moves reflect ... development teams in response to high customer demand ...
(Date:6/16/2016)... 2016 The global ... reach USD 1.83 billion by 2024, according to ... Technological proliferation and increasing demand in commercial buildings, ... drive the market growth.      (Logo: ... development of advanced multimodal techniques for biometric authentication ...
(Date:6/9/2016)... control systems is proud to announce the introduction of fingerprint attendance control software, allowing ... are actually signing in, and to even control the opening of doors. ... ... ... Photo - http://photos.prnewswire.com/prnh/20160609/377487 ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... 27, 2016  Global demand for enzymes is ... 2020 to $7.2 billion.  This market includes enzymes ... products, biofuel production, animal feed, and other markets) ... biocatalysts). Food and beverages will remain the largest ... consumption of products containing enzymes in developing regions.  ...
(Date:6/27/2016)... ... 27, 2016 , ... Newly created 4Sight Medical Solutions ... the healthcare market. The company's primary focus is on new product introductions, to ... that are necessary to help companies efficiently bring their products to market. , ...
(Date:6/24/2016)... , June 24, 2016 Epic ... sensitively detects cancers susceptible to PARP inhibitors by ... tumor cells (CTCs). The new test has already ... therapeutics in multiple cancer types. Over ... DNA damage response pathways, including PARP, ATM, ATR, ...
(Date:6/23/2016)... , June 23, 2016   Boston Biomedical ... novel compounds designed to target cancer stemness pathways, ... been granted Orphan Drug Designation from the U.S. ... of gastric cancer, including gastroesophageal junction (GEJ) cancer. ... designed to inhibit cancer stemness pathways by targeting ...
Breaking Biology Technology: