Navigation Links
Stressed nanomaterials display unexpected movement
Date:2/23/2010

ries do not move, a characteristic that helps the material resist deformation. But when Hemker and his colleagues performed experiments on nanocrystalline aluminum thin films, applying a type of force called shear stress, they found an unexpected result. "We saw that the grains had grown bigger, which can only occur if the boundaries move," he said, "and the most surprising part of our observation was that it was shear stress that had caused the boundaries to move."

"The original view," Hemker said, "was that these boundaries were like the walls inside of a house. The walls and the rooms they create don't change size; the only activity is by people moving around inside the room. But our experiments showed that in these nanomaterials, when you apply a particular type of force, the rooms do change size because the walls actually move."

The discovery has implications for those who use thin films and other nanomaterials to make integrated circuits and microelectromechanical systems, commonly called MEMS. The boundary movement shown by Hemker and his colleagues means that the nanomaterials used in these products likely possess more plasticity, higher reliability and less brittleness, but also reduced strength.

"As we move toward making things at much smaller sizes, we need to take into account how activity at the atomic level affects the mechanical properties of the material," Hemker said. "This knowledge can help the microdevice makers decide on the proper size for their components and can lead to better predictions about how long their products will last."


'/>"/>

Contact: Phil Sneiderman
prs@jhu.edu
443-287-9960
Johns Hopkins University
Source:Eurekalert  

0

GOOD

Page: 1 2

Related biology technology :

1. Miami Beach Real Estate Attorney Opens Miami Real Estate Brokerage for International Luxury Miami Beach Condo Buyers From Distressed Sellers
2. EPA announces research strategy to study nanomaterials
3. Quantum dots and nanomaterials: Ingredients for better lighting and more reliable power
4. NPL to create encyclopedia for space nanomaterials
5. Nanomaterials show unexpected strength under stress
6. NanoMaterials Technology to Conduct Process Development Feasibility Study with US Based Emerging Pharmaceutical Company
7. Therapeutic Cells Derived From Reprogrammed (iPS) Stem Cells Display Early Aging
8. Greenway Medical Technologies To Display Live Interoperability Implementations at 2009 DIA Show
9. TrueVision Adds 3D Flat Panel Displays to its Visualization Platform for Refractive-Cataract Surgery
10. American Society of Anesthesiologists Primary Agenda Displayed Says Dr. Barry Friedberg of Cosmetic Surgery Anesthesia
11. Managing Risk Through Quality: Ansell Healthcares Innovative Gammex(R) Glove Range on Display at Arab Health 2009
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Stressed nanomaterials display unexpected movement
(Date:5/24/2013)... May 24, 2013 Senomyx , Inc. ... taste science technologies to discover, develop, and commercialize novel ... , Ph.D., the Company,s Vice President, Biology and ... Relations & Corporate Communications, will present an overview of ... 10:25 a.m. Eastern Time (7:25 a.m. Pacific Time) during ...
(Date:5/24/2013)... 2013 Vestiage, Inc. (stock symbol ... on science-based research and development, sales and marketing ... nutraceuticals, announced today that it is awarding exclusive ... sale of Reluma Skin Illuminating Facial Care. Qualified ... by sending an email to info(at)vestiageinc(dot)com and putting ...
(Date:5/23/2013)... 2013 Venaxis, Inc. (Nasdaq:   APPY), an ... FDA clearance and commercializing its rapid, protein biomarker-based appendicitis ... an underwritten public offering of 10,000,000 shares of its ... of its common stock at an exercise price of ... of $1.25 per share and related warrant.  Venaxis has ...
(Date:5/23/2013)... 2013 Patheon Inc ., a ... the global pharmaceutical industry, will host a complimentary webinar ... Testing” on Tuesday, June 4, 2013 at 11 a.m. ... required to comply with regulations for cleaning validation. ... scientific underpinning and little evaluation of risk. Some ...
Breaking Biology Technology:SENOMYX TO WEBCAST CORPORATE PRESENTATION AT THE CITI 2013 GLOBAL CONSUMER CONFERENCE 2Vestiage Announces Launch of Exclusive Territories for Reluma Brand Sales in USA 2Vestiage Announces Launch of Exclusive Territories for Reluma Brand Sales in USA 3Vestiage Announces Launch of Exclusive Territories for Reluma Brand Sales in USA 4Vestiage Announces Launch of Exclusive Territories for Reluma Brand Sales in USA 5Venaxis Announces Pricing of Offering of Common Stock and Warrants 2Venaxis Announces Pricing of Offering of Common Stock and Warrants 3Patheon to Present on “Cleaning Validation: Science, Risk and Novel Approaches to Testing” 2
... Kill Human Embryos for Research, LANSING, Mich., ... Executive Officer Sister Monica Kostielney,R.S.M., made the following ... committee "Stem Cell Research BQC":, "In order ... stage, any,proposal, legislative or ballot related, that seeks ...
... AMDL, Inc. (Amex:,ADL), headquartered in Tustin, ... China, through its wholly owned subsidiary Jade,Pharmaceutical ... that,engages in the development, manufacture and marketing ... today that JPI has,signed an agreement with ...
... Compendia Bioscience, Inc.,today announced the receipt of a ... Cancer Institute to support the project entitled "Development,of ... and,Development". (Logo: http://www.newscom.com/cgi-bin/prnh/20070213/NYTU093LOGO ) ... as the principal,investigator for this project, will assume ...
Cached Biology Technology:AMDL Expands Drug Distribution in China With Additional Agreement, Valued at $2.3 Million Annually 2Compendia Bioscience Announces the Receipt of a $2.4M SBIR Award and Related Management Changes 2
(Date:5/24/2013)... medication against Alzheimer,s disease, scientists have focused among other ... (A-beta). After all, it is the accumulation of A-beta that ... Starting point for the formation of A-beta is APP. Alessia ... unravel the function of APPL the fruit-fly version of ... , Alessia Soldano (VIB/KU Leuven): "We have discovered that APPL ...
(Date:5/23/2013)... , Automated conserved noncoding sequence (CNS) ... among grasses , Within the genome of each ... undergo little change in position and sequence over millions ... Some of these evolutionarily stable sequences, so-called conserved noncoding ... other genes or the condensation of chromosomes, but the ...
(Date:5/23/2013)... Northwest National Laboratory honored more than 165 staff ... property at PNNL,s annual Intellectual Property Commercialization Recognition ... of Energy national laboratory named materials scientist Jun ... developing battery materials that can store large amounts ... and reduce the time it takes to charge ...
Breaking Biology News(10 mins):A new strategy required in the search for Alzheimer's drugs? 2Frontiers news briefs: May 23 2Frontiers news briefs: May 23 3PNNL staff recognized for scientific accomplishments, moving technologies into the marketplace 2
... nuclear weapons remains a goal for governments around the ... 21st century, as recognised at the 2010 nuclear security ... efforts to prevent the proliferation of nuclear weapons, but ... the important role science in this field. A new ...
... A panel of scientists speaking today at the annual meeting ... unveiled new research and models demonstrating how climate change could ... coastal and Great Lakes ecosystems, with some studies projecting impacts ... the wettest year on record and third warmest for sea ...
... Researchers from the Georgia Institute of Technology have ... of people worldwide from dying of pneumonia each year. ... is a solution to the problem of diagnosing pneumonia, ... for Disease Control and Prevention (CDC). Pneumonia, an ...
Cached Biology News:Enhancing nuclear security: Training and international collaboration 2Climate projections show human health impacts possible within 30 years 2Climate projections show human health impacts possible within 30 years 3Climate projections show human health impacts possible within 30 years 4A better way to diagnose pneumonia 2A better way to diagnose pneumonia 3
Incorporating the innovative InGaAs detection system the Cary 6000i is the worlds most advanced UV-Vis-NIR spectrophotometer delivering superior signal to noise performance and outstanding sensitivit...
ABI 432 Resins • Gln(Trt) Peptide Synthesis Column...
The E. coli Expression System with Gateway Technology is designed to create E. coli expression clones containing the T7 promoter. The expression clones are ready for transformation and expression in ...
...
Biology Products: