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  

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:10/22/2014)... 2014 Involution Studios , a ... a new infographic, Understanding Ebola . The ... designed, easy to follow informative tool for anyone wanting ... symptoms and prevention. , "As the news has spread ... Ebola outbreak represents not only a healthcare crisis with ...
(Date:10/22/2014)... October 22, 2014 Physicians Choice ... cardiovascular pharmacogenetics menu, which enables healthcare providers to ... With PCLS’s evidence-based results, healthcare providers are better ... their therapy, while minimizing risks for adverse drug ... according to the FDA [1] more than 2.2 ...
(Date:10/22/2014)... 22, 2014 Nuvilex, Inc. (OTCQB: NVLX) – ... people worldwide are living with diabetes, with  that number ... The global market for diabetes treatments is approximately $500 ... worldwide died from pancreatic cancer.  Pancreatic cancer is the ... in the United States , and ...
(Date:10/20/2014)... , Oct. 20, 2014 Mapp ... experimental ZMapp™ antibody therapeutic to fight the Ebola ... difficult and time-consuming the production of pharmaceuticals can ... research publisher said that while some may be ... this compound, those with industry knowledge are well ...
Breaking Biology Technology:Involution Studios' Ebola Infographic Provides Key Disease Information and Statistics at a Glance 2PCLS Announces Expansion of Cardiovascular Pharmacogenetic Testing Menu 2PCLS Announces Expansion of Cardiovascular Pharmacogenetic Testing Menu 3Nuvilex Brief Analyst Report: Thinking Outside the Box by BrokerBank Securities, Inc. 2Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 2Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 3
... Inc. (OTC: MSEL) operating under its principal brand ... of visual communications and brand imaging solutions, was awarded " ... 9th Annual American Business Awards Ceremony, in recognition of its ... solid results, despite prevailing economic turbulence. The American ...
... 2011 Amylin Pharmaceuticals, Inc. (Nasdaq: ... present data for its two first-in-class diabetes drugs, ... and its investigational diabetes drug candidates BYDUREON™ (exenatide ... at the 71st Scientific Sessions of the American ...
... 2011 Scientists Drs. Samuel and Elenore Bogoch of BioRadar ... in Replikin Counts of the EHEC lethal strains of E. ... of E. Coli have been studied in laboratories in Germany ... in the public databases. Replikins are subsequences of the genome ...
Cached Biology Technology:Merisel, Inc. Wins Business Turnaround of the Year at the 2011 American Business Awards 2Merisel, Inc. Wins Business Turnaround of the Year at the 2011 American Business Awards 3Merisel, Inc. Wins Business Turnaround of the Year at the 2011 American Business Awards 4Merisel, Inc. Wins Business Turnaround of the Year at the 2011 American Business Awards 5Amylin Pharmaceuticals to Present Promising New Data on the Company's Diabetes Programs at ADA 2011 2Amylin Pharmaceuticals to Present Promising New Data on the Company's Diabetes Programs at ADA 2011 3Amylin Pharmaceuticals to Present Promising New Data on the Company's Diabetes Programs at ADA 2011 4Amylin Pharmaceuticals to Present Promising New Data on the Company's Diabetes Programs at ADA 2011 5Amylin Pharmaceuticals to Present Promising New Data on the Company's Diabetes Programs at ADA 2011 6Amylin Pharmaceuticals to Present Promising New Data on the Company's Diabetes Programs at ADA 2011 7Amylin Pharmaceuticals to Present Promising New Data on the Company's Diabetes Programs at ADA 2011 8Rising Replikin Counts in E. Coli in Germany Since 2005 Preceded Current E. Coli Outbreak 2Rising Replikin Counts in E. Coli in Germany Since 2005 Preceded Current E. Coli Outbreak 3
(Date:10/18/2014)... patients referred for evaluation of suspected genetic conditions, ... 25 percent, including detection of a number of ... disease, according to a study appearing in ... coincide with the American Society of Human Genetics ... or coding regions of thousands of genes simultaneously ...
(Date:10/17/2014)... news release is available in German . ... millions of sperms every day in order to reproduce? And ... are the topic of the latest issue of the research ... 2014). The evolutionary biologist Steven Ramm from Bielefeld University Bielefeld ... it is not unusual for a female to copulate with ...
(Date:10/16/2014)... body. Battles are won, lost or sometimes end ... as tumor dormancy—can last up to 25 years ... poorly understood. , A new computational model ... Professor of Chemistry at Princeton University, may help ... switch to a malignant state. Published today in ...
Breaking Biology News(10 mins):Whole-exome sequencing shows potential as diagnostic tool 2Sperm wars 2Modeling tumor dormancy 2
... top technological universities have come together to form ... brings together these leading engineering-based universities in the ... address global societal issues is through the joint ... top class research in science and technology. ...
... Scientists have completed the first study of microbes that ... the Gulf of Mexico, where conditions may resemble those ... was partially funded by the National Science Foundation (NSF), ... vents spew mud, oil, brine and gases that support ...
... Outreach efforts by the Translational Genomics Research Institute (TGen) ... the second year, TGen will help organize a cancer ... The 2nd annual Fort Defiance Cancer Awareness and Advocacy ... 8:30 a.m.-5 p.m. July 18 at the Navajo Nation ...
Cached Biology News:Global alliance of leading technological universities to address global societal issues 2Better living through chemistry 2Better living through chemistry 3TGen helps promote cancer awareness for vast Navajo Nation 2TGen helps promote cancer awareness for vast Navajo Nation 3
...
Mouse anti-JNK (PT183/185) Class: Antibody Product Group: Signalling molecules and phospho-specific Antibody...
Acetyl CoA Carboxylase Antibody...
mu Opioid Receptor splice variant Immunogen: Synthetic peptide corresponding to residues K S C M D R G M R N L L P D D G P R Q E of Mu Opioid Receptor. Storage: -20 C, Avoid Freeze/Thaw Cycle...
Biology Products: