Navigation Links
Oregon scientists offer new insights on controlling nanoparticle stability
Date:12/9/2013

EUGENE, Ore. University of Oregon chemists studying the structure of ligand-stabilized gold nanoparticles have captured fundamental new insights about their stability. The information, they say, could help to maintain a desired, integral property in nanoparticles used in electronic devices, where stability is important, or to design them so they readily condense into thin films for such things as inks or catalysts in electronic or solar devices.

In a project detailed in the Nov. 27 issue of the Journal of Physical Chemistry C doctoral student Beverly L. Smith and James E. Hutchison, who holds the Lokey-Harrington Chair in Chemistry at the UO, analyzed how nanoparticle size and molecules on their surfaces, called ligands, influence structural integrity under rising temperatures.

They focused on nanoparticles less than two nanometers in diameter the smallest studied to date to better understand structural stability of these tiny particles being engineered for use in electronics, medicine and other materials. Whether a nanoparticle needs to remain stable or condense depends on how they are being used. Those used as catalysts in industrial chemical processing or quantum dots for lighting need to remain intact; if they are precursors for coatings in solar devices or for printing ink, nanoparticles need to be unstable so they sinter and condense into a thin mass.

For their experiments, Smith and Hutchison produced gold nanoparticles in four well-controlled sizes, ranging from 0.9 nanometers to 1.5 nanometers, and analyzed ligand loss and sintering with thermogravimetric analysis and differential scanning calorimetry, and examined the resulting films by scanning electron microscopy and X-ray photoelectron spectroscopy. As the nanoparticles were heated at 5 degrees Celsius per minute, from room temperature to 600 degrees Celsius, the nanoparticles began to transform near 150 degrees Celsius.

The researchers found that
'/>"/>

Contact: Jim Barlow
jebarlow@uoregon.edu
541-346-3481
University of Oregon
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Development near Oregon, Washington public forests
2. Oregon researchers say supplement cuts muscle loss in knee replacements
3. Oregon Biodiversity Information Center wins 2013 Natureserve Network Collaboration Award
4. Ken Bierly of the Oregon Watershed Enhancement Board to receive ESA Regional Policy Award
5. Argonne scientists Rajh, Soderholm and Segre named AAAS Fellows
6. Deep Carbon Observatory scientists discover quick recipe for producing hydrogen
7. Stanford scientists probe abandoned mine for clues about permanent CO2 sequestration
8. A*STAR scientists discover novel hormone essential for heart development
9. Scientists unearth secrets of Périgord truffles, the culinary black diamond
10. Top scientists to present at Epigenetic Control and Cellular Plasticity symposium
11. Salk scientists crack riddle of important drug target
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Oregon scientists offer new insights on controlling nanoparticle stability
(Date:7/7/2015)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the ... market announces a revised version of one of its first 30 ... on CNBC in New York , ... San Francisco metro areas.    , ... to replace all the cards in your wallet and keep your ...
(Date:7/2/2015)... Fingerprint Cards has received an order for its ... distributor World Peace Industrial Group (WPI), part of WPG Holdings. ... . Deliveries are planned to take place during Q3 ... manufacturers in Asia . The order value ... of approximately 2,200 MSEK for 2015. Jörgen Lantto, ...
(Date:6/29/2015)... Research and Markets( http://www.researchandmarkets.com/research/zj7h4f/latin_america ... America Biomedical Sensors Market - Growth, Trends & Forecasts ... Latin America Biomedical Sensors market is estimated at $0.65 ... the period 2014-2020 The near future will ... formulation of each individual. These sensors can be set ...
Breaking Biology News(10 mins):Wocket Smart Wallet Commercials Airing on CNBC to Showcase This Summer's Must- Have Tech Product 2Wocket Smart Wallet Commercials Airing on CNBC to Showcase This Summer's Must- Have Tech Product 3FPC Receives Order for Touch Fingerprint Sensors of 268 MSEK 2Latin America Biomedical Sensors Market Report 2015-2020 2
... ,Western scrub jays summon others to screech over the body ... University of California, Davis. The birds, cacophonous "funerals" can last ... suggested that other animals, including elephants, chimpanzees and birds in ... Teresa Iglesias, the UC Davis graduate student who carried out ...
... Researchers have created a new type of miniature pump activated ... powered by fermentation., The micropump contains bakers yeast and sugar ... patch is placed on the skin, the body heat and ... generating a small amount of carbon dioxide gas. The gas ...
... reactors has the promise to be safe, sustainable and limitless. ... to the commercial energy market. This is partly because the ... A team of researchers at the University of Tennessee, Knoxville, ... institutions, is trying to change that. Led by Brian ...
Cached Biology News:Scrub jays react to their dead 2Body heat, fermentation drive new drug-delivery 'micropump' 2University of Tennessee, ORNL lead national team to study nuclear fusion reactors 2University of Tennessee, ORNL lead national team to study nuclear fusion reactors 3
(Date:7/27/2015)... The Brain & Behavior Research ... annual Klerman and Freedman Prizes, recognizing exceptional clinical ... supported by NARSAD Young Investigator Grants. The grants ... in neurobiological and psychosocial research, garner pilot data ... detection, treatment, prevention and cure of mental illnesses. ...
(Date:7/25/2015)... ... July 25, 2015 , ... ... series. It precisely checks and adjusts the surface temperature of the measuring prism. ... the pharmaceutical industry, data traceability and documentation are key requirements. It is likely ...
(Date:7/24/2015)... -- Orexigen Therapeutics, Inc. (Nasdaq: OREX ) will ... 2015 on Thursday, August 6 before the market opens. ... and discuss the financial results in a live webcast ... a.m. Pacific Time). The live call may ... or (847) 413-3238 (international), participant code 40327229. The webcast ...
(Date:7/23/2015)... 23, 2015 ImmunoCellular Therapeutics, Ltd. ("ImmunoCellular") (NYSE MKT: ... for the second quarter 2015 on Thursday, August 6, 2015. ... webcast on that day at 5:00 pm ET to discuss ... update. The call will be hosted by Andrew Gengos ... , , LIVE CALL: , , ,  (877) ...
Breaking Biology Technology:Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 2Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 3Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 4Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 5Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 6It’s T-Time for Refractometers: On-site Temperature Check Now Available 2ImmunoCellular Therapeutics to Report Second Quarter 2015 Financial Results on August 6, 2015 2
... Improves Physician Efficiency and Reduces Duplicative and Unnecessary ... ... Nov. 26 RSNA Booth #5924 -- Compressus Inc.,and Advanced ... announced today that ARC has improved physician,efficiency and patient safety, ...
... $5.2 Million ... for Q3 of 2006, -- Gross profit increases 102% to $2.6 Million for Q3 of ... Million for Q3 ... Equity, BEIJING, Nov. 23 /Xinhua-PRNewswire/ -- China Biopharmaceuticals,Holdings, Inc. (OTC Bulletin Board: CHBP), a ...
... PARIS, Nov. 23 Bristol-,Myers Squibb Company (NYSE: ... today,that they are terminating their license agreement for ... for the treatment of,advanced or metastatic bladder cancer ... Fabre Medicament and licensed to Bristol-Myers Squibb,in 2004 ...
Cached Biology Technology:Diagnostic Turnaround Improved by 600% Through Interoperability 2Diagnostic Turnaround Improved by 600% Through Interoperability 3Diagnostic Turnaround Improved by 600% Through Interoperability 4China Biopharmaceuticals Holdings Announces Third Quarter 2007 Financial Results 2China Biopharmaceuticals Holdings Announces Third Quarter 2007 Financial Results 3China Biopharmaceuticals Holdings Announces Third Quarter 2007 Financial Results 4China Biopharmaceuticals Holdings Announces Third Quarter 2007 Financial Results 5China Biopharmaceuticals Holdings Announces Third Quarter 2007 Financial Results 6China Biopharmaceuticals Holdings Announces Third Quarter 2007 Financial Results 7
... System Chemistry Analyzer for General Chemistries, Specialty Chemistries, QC, Reagent Development, Pharmaceutical Development, Physician Owned ... over 30 user-selectable wavelengths. ... ... ...
... for Mac OS X provides the most ... protein sequence analysis and molecular biology data ... Vector NTI Suite you can store manage ... types of molecular biology data all within ...
... Multiple solvents can be used, such as water, benzene, formamide, nitrobenzene, cyclohexane, 1,4-dioxane, p-xylene, dimethyl ... * Range: 12-position switchable: ... ... ...
rat Leptin...
Biology Products: