Navigation Links
Engineering nanoparticles for maximum strength
Date:10/20/2008

irts out from between the substrate and the punch like a watermelon seed. "If you didn't see that happening, you'd have no way of knowing why the force suddenly vanished," he says. "So while setting up the experiment in the In Situ Microscope is a little more difficult and time-consuming, it's essential."

The nanospheres of cadmium sulfide were prepared in the laboratories of Paul Alivisatos, Berkeley Lab's Deputy Director and Division Director of MSD, and a member of UC Berkeley's MSE and Chemistry Departments. The chemical methods used to create the hollow spheres allow their dimensions to be manipulated with great precision, including the outer diameter of the spheres and the thickness of the shells.

"Essentially we're investigating structural hierarchy, which is known to play an important role in determining the strength of many bulk materials bone, for example only here we're applying it on the nanoscale," says Minor. "In this case the hierarchy is the size of the crystal domains, from three or four nanometers up to 10 nanometers; the thickness of the shells, from 35 to 70 nanometers; and the diameter of the spheres, from about 200 to 450 nanometers. We experimented on dozens of nanospheres with variations in each of these dimensions."

What they observed as the diamond anvil slowly bore down on the hollow nanospheres was that the spheres gradually bulged at the sides as they were squashed. Cadmium sulfide is inherently brittle and might have been expected to break easily, but instead the spheres deformed by as much as 20 percent of their original diameter before they shattered.

To understand the distribution of stresses throughout the sphere, Daryl Chrzan of MSD and MSE and his research group performed theoretical calculations. The sphere was computationally divided into a fine grid and the deformation for each grid element was calculated, giving the reaction to the applied force for the overall geometry of the sphere
'/>"/>

Contact: Paul Preuss
paul_preuss@lbl.gov
510-486-6249
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3 4

Related biology technology :

1. Genstruct Expands Team with New VP of Engineering
2. Genetic Engineering & Biotechnology News reports on growing role of molecular diagnostics
3. NSF awards 14 materials research science and engineering centers
4. Online Systems Engineering Master's Program Attracts Engineers from Fortune 500 Firms
5. American Oriental Bioengineering Announces Participation in September Investor Conferences
6. American Oriental Bioengineering, Inc. to Report Second Quarter 2008 Financial Results
7. Christopher Kurtz Joins Alexza Pharmaceuticals as Vice President, Global Supply Chain and Sustainment Engineering
8. Genetic Engineering & Biotechnology News reports on novel hit-to-lead drug discovery
9. Pittsburgh Region Middle School Students Participate in Hands-on Tissue Engineering Summer Camp
10. American Oriental Bioengineering Proposes Offering of $85 Million of Convertible Notes
11. Touch Bionics wins the 2008 MacRobert Award - i-LIMB Hand recognised as the leading engineering innovation of the year
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Engineering nanoparticles for maximum strength
(Date:6/26/2015)... 26, 2015  SeraCare Life Sciences, a leading ... announced that it has signed a Cooperative Research ... Institute (NCI), part of the National Institutes of ... for cancer assays.  The CRADA will investigate the ... control DNA biosynthetics spiked into a genomic DNA ...
(Date:6/26/2015)... ... June 26, 2015 , ... ... Agriculture (USDA), Grain Inspection, Packers and Stockyards Administration (GIPSA) awarded a five year ... in feed and grains utilizing Charm’s ROSA DONQ-FAST5 Test. This 5 minute quantitative ...
(Date:6/26/2015)... (PRWEB) , ... June 26, 2015 , ... ... today announced that its SimplePrep™ technologies have been integrated into a sample prep ... Space Station (ISS) as a part of the NASA’s WetLab-2 Project. , On ...
(Date:6/26/2015)... DALLAS , June 26, 2015 ... Animal Fat), Application (Hydraulic Fluids, Metalworking fluids, Chainsaw oils, ... Automobile) & by Region - Global trends and Forecasts ... expected to reach $2,972.13 Million by 2020 at a ... Browse 160 market data Tables and   66 ...
Breaking Biology Technology:SeraCare Life Sciences Signs CRADA with NCI to Advance Cancer Diagnostics 2SeraCare Life Sciences Signs CRADA with NCI to Advance Cancer Diagnostics 3USDA-GIPSA (FGIS) Awards 5 Year Contract for Vomitoxin Tests to Charm Sciences 2Claremont BioSolutions’ SimplePrep™ Products Deployed in NASA Wetlab-2 Project Slated for June 28th Flight to International Space Station aboard SpaceX CRS-7 2Claremont BioSolutions’ SimplePrep™ Products Deployed in NASA Wetlab-2 Project Slated for June 28th Flight to International Space Station aboard SpaceX CRS-7 3Biolubricants Market Worth $2,972.13 Million by 2020 2Biolubricants Market Worth $2,972.13 Million by 2020 3
... Those who attended the BIO2003 Conference in Washington D.C. ... experience. First, it was attended by over 16,000 people ... filled with dignitaries such as President Bush, Secretary Tommy ... though, the conference showcased the efforts of research scientist ...
... freeze budget proposal? Legislative Republicans voted for it because they ... convinced the freeze was good policy and secretly hoped Doyle ... Democrats and Gov. Jim Doyles proposal to raise the state ... vote for such a populist bill if it reaches the ...
... Reviving the Economy , ,* * * * * * ... from last week's DEMOmobile 2003, and the experience has only strengthened ... the overall economy. The energy from the 400-plus attendees and 37 ... crystal clear: True connectivity -- both in our homes and our ...
Cached Biology Technology:Let's Get Serious 2Doyle and the Legislature Have Much To Agree Upon When It Comes To The Economy 2Doyle and the Legislature Have Much To Agree Upon When It Comes To The Economy 3The News From DEMOmobile 2003 2The News From DEMOmobile 2003 3
(Date:6/25/2015)... According to a new ... Area), Technology, Material (Optical Prism, Piezoelectric, Capacitive & ... Others) & Geography - Global Forecast to 2014 ... is expected to reach $14,500.07 Million by 2020, ... Browse 76 market Tables and 109 Figures spread ...
(Date:6/24/2015)... , June 24, 2015  Synaptics Inc. ... human interface solutions, today announced that Sharp has ... provide secure authentication for its latest flagship smartphone ... more than 200 million shipments of its fingerprint ... reinforces Synaptics, strength, scalability and leadership in the ...
(Date:6/23/2015)...   Valencell, a leader in performance ... recent study that illustrates its PerformTek biometric technology ... In a study conducted at Valencell,s Biometric Lab, ... Apple Watch against a chest strap – the ... The study demonstrated that Valencell,s biometric technology delivers ...
Breaking Biology News(10 mins):Fingerprint Sensors Market Worth $14,500.07 Million by 2020 2Fingerprint Sensors Market Worth $14,500.07 Million by 2020 3Fingerprint Sensors Market Worth $14,500.07 Million by 2020 4Synaptics Brings Natural ID Technology to Sharp's Newest Flagship Smartphone 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 3
... is an inherited eye disorder characterized by progressive loss ... blindness at the end stage. , In a ChIP-Seq ... of the transcription factor Crx (Cone-rod homeobox) in the ... genetic basis for visual perception. In-depth analysis of Crx ...
... ATLANTA, Ga. Nov. 18, 2010 The 2010 Golf ... to benefit research aimed at finding better treatments and eventually ... 124 players Oct. 15, 2010, to the Crabapple Golf Club ... support the Translational Genomics Research Institute (TGen), a non-profit biomedical ...
... mysterious link between bones of an ancient lizard found in ... the Komodo dragon, half a world away in Indonesia. ... shape of the vertebrae links the 33-million-year-old African lizard fossil ... for some 700,000 years. , "The African fossil was ...
Cached Biology News:Transcription factor scan identifies genetic cause for inherited blindness 2Golf Atlanta charity tournament raises $105,000 for TGen research 2Researchers link an African lizard fossil in Africa with the Komodo dragon in Indonesia 2
... PTOs are internucleotide modifications, where one ... replaced by a sulphur atom. This modification ... are available as Full-PTOs ... with thio-caps Several internucleotide ...
... The VARIOKLAV 75 S and 135 S steam ... double bottoms combine the advantages of a double-walled ... use, effective deaeration and drying by built-in jacket ... - fast cooling. The chamber is free of ...
Request Info...
... catalyzes the transfer of the gamma-phosphate ... single- and double-stranded DNA, RNA, and ... the 3'-phosphate from 3'-phosphoryl polynucleotides, deoxyribonucleoside ... form a 3'-hydroxyl group. Storage Buffer: ...
Biology Products: