Navigation Links
Nanoparticles seen as artificial atoms
Date:5/25/2012

ssion electron microscopy and liquid observation cells, scientists at Berkeley Lab and elsewhere have made significant progress in observing nanoparticle growth trajectories, including the oriented attachment of nanoparticles - the chemical phenomenon that starts the growth of nanocrystals in solution. However, these observations have typically been limited to the first few minutes of crystal growth. In their study, Zheng and her colleagues were able to extend the time of observation from minutes to hours.

"The key to studying the growth of colloidal nanocrystals with different shapes and architectures is to maintain the liquid in the viewing window long enough to allow complete reactions," Zheng says. "We dissolved molecular precursors of platinum and iron in an organic solvent and used capillary pressure to draw the growth solution into a silicon-nitride liquid cell that we sealed with epoxy. The sealing of the cell was especially important as it helped keep the liquid from turning viscous over time. Previously, we'd often see the liquids become viscous and this would prevent the nanoparticle interactions that drive crystal growth from taking place."

Zheng and her colleagues chose to study the growth of platinum iron nanorods because of the electrocatalytic material's promising potential for use in next generation energy conversion and storage devices. They were able to observe these nanoparticles assemble into nanorod crystals using powerful transmission electron microscopes at Berkeley Lab's National Center for Electron Microscopy, including TEAM 0.5 (Transmission Electron Aberration-corrected Microscope), which can produce images with half angstrom resolution less than the diameter of a single hydrogen atom.

"From what we observed only single nanoparticles exist at the beginning of crystal growth, but, as growth proceeds, small chains of nanoparticles become dominant until, ultimately, only long chains of nanoparticles can be seen,
'/>"/>

Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

1

GOOD

Page: 1 2 3

Related biology technology :

1. Light touch keeps a grip on delicate nanoparticles
2. New measuring techniques can improve efficiency, safety of nanoparticles
3. Metal nanoparticles shine with customizable color
4. Marshall study shows nanoparticles used as additives in diesel fuels can travel from lungs to liver
5. How to count nanoparticles
6. Nanoparticles seek and destroy glioblastoma in mice
7. Hydrogen released to fuel cell more quickly when stored in metal nanoparticles
8. Rice University lab develops technique to control light from nanoparticles
9. New technique maps twin faces of smallest Janus nanoparticles
10. TU Delft: cheap and efficient solar cell made possible by linked nanoparticles
11. Artificial nanoparticles influence the heart rate
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Nanoparticles seen as artificial atoms
(Date:5/21/2013)... 2013 As the R&D sector ... within the industry to deliver better products, faster. ... pharma companies often means turning big ideas into ... in collaboration with Sensidose AB and Recipharm, is ... products to market sooner. The partnership resulted in ...
(Date:5/21/2013)... , May 21, 2013  MacroGenics, Inc. today ... of margetuximab (MGAH22), an Fc-modified chimeric monoclonal antibody ... the HER2 oncoprotein," will be presented at the ... Clinical Oncology during the Developmental Therapeutics - Immunotherapy ... 4:15 – 4:30 PM.  The presentation will describe ...
(Date:5/21/2013)... Bed bugs have become so widespread in ... many turn to chemical-based pesticides for help to completely get ... risks those solutions present, the company advised the public to ... , According to My Cleaning Products, chemical-based pesticides are ... be. It shared that the pests have already developed immunity ...
(Date:5/21/2013)... May 21, 2013 Inflamax scientists ... the ITN to design the study, which will ... key clinical models used in the study of ... Nasal Allergen Challenge (NAC) models. Although both the ... publications, to date no direct comparison between the ...
Breaking Biology Technology:The Development of an Innovative Microtablet Dosage Form, a Success Story: Live Webinar Hosted by Xtalks 2MacroGenics Announces Margetuximab (MGAH22) Phase 1 Data Presentation at ASCO; Initiates Phase 2 Clinical Study to Evaluate Activity of Margetuximab in Patients with Metastatic Breast Cancer 2MacroGenics Announces Margetuximab (MGAH22) Phase 1 Data Presentation at ASCO; Initiates Phase 2 Clinical Study to Evaluate Activity of Margetuximab in Patients with Metastatic Breast Cancer 3New Guide to Kill Bed Bugs Published by My Cleaning Products, Company Enumerates Non-Toxic Means to Clear the Pests 2New Guide to Kill Bed Bugs Published by My Cleaning Products, Company Enumerates Non-Toxic Means to Clear the Pests 3Inflamax Research selected by the Immune Tolerance Network and the National Institutes of Health to conduct a landmark clinical study on the underlying mechanisms of allergic inflammation. 2
... , Strategic Examination and Consolidation ... WASHINGTON, Aug. 27 Little uniformity exists in the structure ... the future, according to Clinical Trials Offices: What,s New ... Academic Health Centers (AAHC). Emerging centralized clinical trial offices (CTOs) ...
... BETHLEHEM, Pa., Aug. 27 World-class care doesn,t have to be a world away. ... / NYW008LOGO ) , , That is the ... epherd Rehabilitation Network (GSRN) and B. Braun Medical ... innovative technology to enhance the delivery of rehabilitation services in the community. , ...
... , SEATTLE, Aug. 27 Dendreon Corporation (Nasdaq: ... on Thursday, September 24, 2009 beginning at 8:45 a.m. ET. , ... be accessible through the Investor Relations section of the Dendreon website, ... it will be archived on the site following the presentation. To access ...
Cached Biology Technology:Clinical Trials Offices Changing Academic Health Center Research Infrastructure 2Two Lehigh Valley Healthcare Leaders Collaborate to Deliver Safer, High-Quality Care to the Community 2Two Lehigh Valley Healthcare Leaders Collaborate to Deliver Safer, High-Quality Care to the Community 3Two Lehigh Valley Healthcare Leaders Collaborate to Deliver Safer, High-Quality Care to the Community 4
(Date:5/21/2013)... known for a long time that some creatures evolve ... particularly for plants. But it may be that height ... University and the U. S. National Evolutionary Synthesis Center. ... May in the journal Nature Communications , Lanfear ... , Drawing from a database of global patterns in ...
(Date:5/21/2013)... device attached to a whale entangled in fishing gear, ... changed a whale,s diving and swimming behavior. The monitoring ... and migrate, depletes their energy as they drag gear ... slow death. , The scientists in this entanglement response ... two-year-old female North Atlantic right whale called Eg 3911. ...
(Date:5/21/2013)... considered in the management of natural resources, and ... help them recognize and respond to the relationships ... , Place-Based Conservation: Perspectives from the Social ... Northwest Research Station,s Linda Kruger, can help managers ... is published by Springer Verlag and is available ...
Breaking Biology News(10 mins):Small but speedy: Short plants live in the evolutionary fast lane 2Study reveals how fishing gear can cause slow death of whales 2Study reveals how fishing gear can cause slow death of whales 3
... from the Gulf of Mexico following the Deepwater Horizon oil ... (TIEHH) at Texas Tech University have reported that only 8 ... duck eggs resulted in a 50 percent mortality rate. ... remained at sea and exposed to weather had a significant ...
... a second look at your iced or steaming tea. ... school students using tabletop DNA technologies found several herbal ... unlisted on the manufacturers, package. The teen sleuths ... exported from India versus small-leaf teas exported from China. ...
... A red splash on a toxic butterfly,s wing screams DON,T ... wing pattern of another toxic species in the area. By ... US! , Now several research teams that include Smithsonian ... each other,s red wing patterns through changes in the same gene. ...
Cached Biology News:Deepwater Horizon crude less toxic to bird eggs after weathering at sea 2Unlisted ingredients in teas and herbal brews revealed in DNA tests by high school students 2Unlisted ingredients in teas and herbal brews revealed in DNA tests by high school students 3Unlisted ingredients in teas and herbal brews revealed in DNA tests by high school students 4Unlisted ingredients in teas and herbal brews revealed in DNA tests by high school students 5An eye gene colors butterfly wings red 2
Complement C1q subcomponent subunit C precursor. [Source:Uniprot/SWISSPROT;Acc:P02747] Antigen: Recombinant Protein Epitope Signature Tag (PrEST)....
Mouse monoclonal [CRC64] to Integrin alpha 2b + beta 3 ( Abpromise for all tested applications). Antigen: Human platelets Entrez Gene ID: 23295 Swiss Protein ID: P05106...
Rabbit polyclonal to NCoR2, prediluted ( Abpromise for all tested applications). entrezGeneID: 9612 SwissProtID: Q9Y618...
Goat polyclonal to Nebraska Calf Diarrhea Virus (FITC) ( Abpromise for all tested applications). Antigen: Bovine (Nebraska Calf Diarrhea Virus)....
Biology Products: