Navigation Links
York researchers discover important mechanism behind nanoparticle reactivity
Date:11/3/2013

An international team of researchers has used pioneering electron microscopy techniques to discover an important mechanism behind the reaction of metallic nanoparticles with the environment.

Crucially, the research led by the University of York and reported in Nature Materials, shows that oxidation of metals - the process that describes, for example, how iron reacts with oxygen, in the presence of water, to form rust - proceeds much more rapidly in nanoparticles than at the macroscopic scale. This is due to the large amount of strain introduced in the nanoparticles due to their size which is over a thousand times smaller than the width of a human hair.

Improving the understanding of metallic nanoparticles particularly those of iron and silver - is of key importance to scientists because of their many potential applications. For example, iron and iron oxide nanoparticles are considered important in fields ranging from clean fuel technologies, high density data storage and catalysis, to water treatment, soil remediation, targeted drug delivery and cancer therapy.

The research team, which also included scientists from the University of Leicester, the National Institute for Materials Science, Japan and the University of Illinois at Urbana-Champaign, USA, used the unprecedented resolution attainable with aberration-corrected scanning transmission electron microscopy to study the oxidisation of cuboid iron nanoparticles and performed strain analysis at the atomic level.

Lead investigator Dr Roland Krger, from the University of York's Department of Physics, said: "Using an approach developed at York and Leicester for producing and analysing very well-defined nanoparticles, we were able to study the reaction of metallic nanoparticles with the environment at the atomic level and to obtain information on strain associated with the oxide shell on an iron core.

"We found that the oxide film grows much faster on a nanopart
'/>"/>

Contact: Caron Lett
pressoffice@york.ac.uk
44-190-432-2029
University of York
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Researchers discover how retinal neurons claim the best brain connections
2. Researchers measure flow from a nanoscale fluid jet
3. Researchers advance scheme to design seamless integrated circuits etched on graphene
4. Harvard researchers, pharma experts offer recommendations to expand access to clinical trial data
5. Virginia Tech researchers publish study on jellyfish energy consumption that will improve bio-inspired robotic designs for Navy
6. Spanish researchers sequence non-infiltrating bladder cancer exome
7. Researchers discover and treat toxic effects of ALS mutation in neurons made from patients skin cells
8. Researchers advance toward engineering wildly new genome
9. Researchers use nanoparticles to deliver vaccines to lungs
10. UCLA researchers smartphone microscope can detect a single virus, nanoparticles
11. Researchers produce nanostructures with potential to advance energy devices
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/27/2015)... , 27. März 2015  Peter ... in Biomedical Science für seine bahnbrechende Arbeit ... zwischen Zellkompartimenten transportiert werden, sowie für die ... zur Reaktion auf Stress nutzen, der mit ... Walter ist Professor für Biochemie an der ...
(Date:3/27/2015)... 27, 2015 Working in collaboration with ... London , Richmond Pharmacology is the first ... 3 study for an investigational RNAi therapeutic being developed for ... the nerves and heart. Read press release ... Based at St Georges University of London ...
(Date:3/26/2015)... Bioscience, Inc. (NASDAQ: ROKA ), a molecular ... for the detection of foodborne pathogens, today reported ... full year ended December 31, 2014. ... ended December 31, 2014 was $1.4 million compared ... and $1.5 million for the third quarter of ...
(Date:3/26/2015)... , March 26, 2015  BioNano Genomics, Inc., ... of  Terry Salyer as chief commercial officer. Salyer ... effective, worldwide sales teams in life sciences. At BioNano, ... System, a genome-mapping platform to assemble a comprehensive ... structural variations. To date, 32 institutions located in ...
Breaking Biology Technology:Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 2Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 3Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 4Roka Bioscience Reports Fourth Quarter and Full Year 2014 Financial Results 2Roka Bioscience Reports Fourth Quarter and Full Year 2014 Financial Results 3Roka Bioscience Reports Fourth Quarter and Full Year 2014 Financial Results 4Roka Bioscience Reports Fourth Quarter and Full Year 2014 Financial Results 5Roka Bioscience Reports Fourth Quarter and Full Year 2014 Financial Results 6Roka Bioscience Reports Fourth Quarter and Full Year 2014 Financial Results 7BioNano Genomics Appoints Terry Salyer as Chief Commercial Officer 2BioNano Genomics Appoints Terry Salyer as Chief Commercial Officer 3
... SEATTLE, Feb. 5 Cell Therapeutics (CTI),(Nasdaq and MTA: ... of,Series F Preferred Stock in exchange for 6,634 shares ... The exchange constitutes 83% in interest of all,series of ... Preferred,Stock will become convertible into 7,143 shares of CTI,s ...
... OREX ), a biopharmaceutical company focused on the treatment ... 11th Annual,BIO CEO & Investor Conference. The details are as follows: ... Monday, February 9, 2009, Time: 3:45 ... Astor Room, New York, Speaker: Graham Cooper, Chief ...
... MATEO, Calif., Feb. 4 NeurogesX, Inc. (Nasdaq: ... and commercializing novel pain management therapies, announced today that ... to present at the 11th Annual BIO CEO & ... 10, 2009. Mr. DiTonno and Stephen Ghiglieri, Chief Financial ...
Cached Biology Technology:Cell Therapeutics Exchanges 83% of Remaining Convertible Preferred Stock Into New Non-dividend Bearing, Non-redeemable Convertible Preferred Stock With Conversion Price of $0.14 per Share 2NeurogesX to Present at 11th Annual BIO CEO & Investor Conference 2NeurogesX to Present at 11th Annual BIO CEO & Investor Conference 3
(Date:3/10/2015)... , March 10, 2015  NXT-ID, Inc. (NASDAQ: ... the "Company"), a biometric authentication company focused on ... Wocket™ smart wallet has been named the "Number ... Modern. Rethink Modern ( http://www.rethinkmodern.com/ ) ... for your home and lifestyle that have a unique ...
(Date:3/3/2015)... LAKE FOREST, Calif. , March 3, ... ("Company"), the leading provider of advanced cryogenic ... serving markets including immunotherapies, stem cells, cell ... health, and reproductive medicine, today announced the ... Hutchinson Cancer Research Centers, ("Fred Hutch") ...
(Date:3/2/2015)... , March 2, 2015   Neurotechnology , ... today introduced the SentiGaze Software Development Kit ... create applications that use off-the-shelf webcams to track eye ... gazes at a monitor. Heatmaps can be used for ... effectiveness of online advertising. The SDK can also be ...
Breaking Biology News(10 mins):NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 2NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 3NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 4Cryoport, Inc. Expands Support of Fred Hutchinson Cancer Research Center's Clinical Research Division 2Cryoport, Inc. Expands Support of Fred Hutchinson Cancer Research Center's Clinical Research Division 3Neurotechnology Releases SentiGaze SDK for Eye Movement Tracking Using Ordinary Webcams 2Neurotechnology Releases SentiGaze SDK for Eye Movement Tracking Using Ordinary Webcams 3
... Professor Keon Jae Lee and Professor ... Science and Engineering at KAIST has developed the biotemplated ... Nature has its own capabilities to spontaneously ... as shells, sea sponges, and bone minerals. For instance, ...
... with a team of international biologists who have recently sequenced ... reveals dynamic evolution and adaptation in the snake venom system, ... between venomous snakes and their prey. A paper ... LSTM, and 34 co-authors from six countries, including the Director ...
... photography competition were announced at an awards ceremony in ... Laura Hepburn of the University of Southampton, details the ... when she first saw underwater hydrothermal vents blowing their ... underwater fissures that erupt volcanic gasses and boiling water. ...
Cached Biology News:LSTM researchers among first to sequence snake genome 2NERC announces the winner of its first photo and essay competition 2NERC announces the winner of its first photo and essay competition 3
Anti-Tissue Trans-glutaminase (IgA) EIA Sample Size: 10 l...
... Bullseye Red Taq DNA Polymerase ... exhibits very high activity in primer extension ... contains a red dye which provides easy ... enzyme was added and allows confirmation of ...
... Kit (E-22013) provides,researchers with a sensitive ... in solution. This fluorescence-based assay can ... (Figure 1). The assay,measures lysozyme activity ... labeled to such a degree that ...
RNA oligomers from 10 to 50 bases purified by PAGE and MS-checked. RNAs are supplied dried and fully deprotected....
Biology Products: