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

Johns Hopkins researchers have discovered that, under the right conditions, newly developed nanocrystalline materials exhibit surprising activity in the tiny spaces between the geometric clusters of atoms called nanocrystals from which they are made.

This finding, detailed recently in the journal Science, is important because these nanomaterials are becoming more ubiquitous in the fabrication of microdevices and integrated circuits. Movement in the atomic realm can affect the mechanical properties of these futuristic materials -- making them more flexible and less brittle -- and may alter the material's lifespan.

"As we make smaller and smaller devices, we've been using more nanocrystalline materials that have much smaller crystallites -- what materials scientists call grains -- and are believed to be much stronger," said Kevin Hemker, professor and chair of Mechanical Engineering in Johns Hopkins' Whiting School of Engineering and senior author of the Science article. "But we have to understand more about how these new types of metal and ceramic components behave, compared to traditional materials. How do we predict their reliability? How might these materials deform when they are subjected to stress?"

The experiments conducted by a former undergraduate research assistant and supervised by Hemker focused on what happens in regions called grain boundaries. A grain or crystallite is a tiny cluster of atoms arranged in an orderly three-dimensional pattern. The irregular space or interface between two grains with different geometric orientations is called the grain boundary. Grain boundaries can contribute to a material's strength and help it resist plastic deformation, a permanent change of shape. Nanomaterials are believed to be stronger than traditional metals and ceramics because they possess smaller grains and, as a result, have more grain boundaries.

Most scientists have been taught that these grain bounda
'/>"/>

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:7/23/2014)... (HZDR), the Vienna University of Technology and the ... nearly perfect semiconductor crystals into a silicon nanowire. ... very fast and multi-functional processing units can be ... The research results will be published in the ... considered the cornerstone of future chip technology, but ...
(Date:7/23/2014)... 2014  Having the right people at the table ... business growth and achieving clinical and operational goals. The ... Summit, July 20-22, 2014, in San Diego ... and healthcare experts discussing how partnerships have positively impacted ... & Chief Executive Officer of Cape Regional Medical Center ...
(Date:7/23/2014)... - BioAmber Inc. (NYSE: BIOA ), ... that the underwriters of its common stock offering ... additional 420,000 shares of common stock at the ... underwriting discounts and commissions, in connection with its ... of common stock, bringing the expected net proceeds ...
(Date:7/23/2014)... , July 23, 2014 China Cord Blood Corporation ... China,s leading provider of cord blood collection, laboratory testing, ... Group Limited ("Cordlife"), a multi-product healthcare company catering to the mother ... forces in assisting patients across the PRC, Singapore ... , India , the Philippines ...
Breaking Biology Technology:A crystal wedding in the nanocosmos 2MSC and Cape Regional Medical Center Partner to Improve Cost, Quality and Outcomes 2BioAmber announces exercise in full of underwriters' option in connection with previously priced follow-on offering 2BioAmber announces exercise in full of underwriters' option in connection with previously priced follow-on offering 3China Cord Blood Corporation and Cordlife Group Limited Announce Collaboration to Aid Asia-based Patients with Cord Blood Stem Cell Therapy 2China Cord Blood Corporation and Cordlife Group Limited Announce Collaboration to Aid Asia-based Patients with Cord Blood Stem Cell Therapy 3China Cord Blood Corporation and Cordlife Group Limited Announce Collaboration to Aid Asia-based Patients with Cord Blood Stem Cell Therapy 4
... Its Kind Instant Dissolve Powder Antacid Delivers Faster Relief, ... Increased Convenience and Great Taste, ... a $20 million integrated marketing campaign,for the new TUMS(R) QuikPak(TM), ... TUMS brand. The QuikPak campaign, part of,a larger new "Bring ...
... Follow, FREDERICK, Md., April 21 ... for ActiPatch(TM) for,kidney-compromised patients. BioElectronics Corporation, (Pink ... revolutionary drug-free,anti-inflammatory patch which accelerates healing., ... ibuprofen,(Advil, Motrin, Nuprin) and Naproxen (Aleve, Anaprox, ...
... DUBLIN, Calif., April 21 SuperGen Inc.,(Nasdaq: ... discovery, rapid,development and commercialization of therapies for solid ... release its 2008,first quarter financial results on Monday, ... of the Company,s financial results and,any revised outlook ...
Cached Biology Technology:New TUMS(R) QuikPak(TM) Campaign Offers Innovative Heartburn Relief with a Little Help from the Jetsons 2Maryland Approves Medicaid Reimbursement for ActiPatch(R) 2SuperGen to Announce 2008 First Quarter Financial Results April 28, 2008 2
(Date:7/23/2014)... fur seals, alongside decades of in-depth monitoring, has ... change on a population of top-predators. Published in ... that the seals have significantly altered in accordance ... with climate conditions. Despite a shift in the ... passing down through generations, leaving the population in ...
(Date:7/23/2014)... issued a high health risk warning for Yellowknife and ... due to forest fires. In the image taken ... along normal wind patterns. Fire is an obvious ... is not quite so obvious and its effects are ... fire (forest, brush, crop, structure, tires, waste or wood ...
(Date:7/23/2014)... people around the world have no access to clean ... 3.4 million people die from water-related diseases every year. ... making a contribution to solving this problem. Working with ... of the Functional Materials Laboratory, the 23-year-old spent a ... , "What makes our DrinkPure filter unique is that ...
Breaking Biology News(10 mins):Genetic study shows major impact of climate change on Antarctic fur seals 2Genetic study shows major impact of climate change on Antarctic fur seals 3ETH student develops filter for clean water around the world 2
... leaf has revealed the oldest known evidence of a macabre ... to turn them into zombies. The discovery has been ... Hughes, from the University of Exeter, who studies parasites that ... manner of animals are susceptible to the often deadly body ...
... from Mount Sinai School of Medicine have enhanced our ... conversion, the process in which food is converted into ... scientists gain atomic-level insight into how organisms synthesize their ... published in the August issue of PLoS Biology ...
... Mont. -- Researchers at Montana State University have ... for treating antibiotic resistant infections, fungal infections and viral ... to study such compounds. The technologies are ... The first technology involves an existing clinical drug ...
Cached Biology News:Fossil reveals 48-million-year history of zombie ants 2Mount Sinai researchers discover new mechanism behind cellular energy conversion 2Montana State University offers 6 new biomedical technologies for licensing 2Montana State University offers 6 new biomedical technologies for licensing 3Montana State University offers 6 new biomedical technologies for licensing 4
... Proteolytic degradation is critical to ... short-lived and regulatory proteins as important ... cellular metabolism, heat shock and stress ... surface receptors and ion channels, cell ...
... degradation is critical to the maintenance ... regulatory proteins as important and diverse ... heat shock and stress response, antigen ... and ion channels, cell cycle regulation, ...
... digital scanner serves as the spot-picking platform. ... standard rack positions on the tray, leaving ... plates on the remaining two racks.,The software ... by mouse-click on the scanned gel image. ...
...
Biology Products: