Navigation Links
A breakthrough in imaging gold nanoparticles to atomic resolution by electron microscopy
Date:8/22/2014

Nanometre-scale gold particles are intensively investigated for application as catalysts, sensors, drug delivery devices, biological contrast agents and components in photonics and molecular electronics. Gaining knowledge of their atomic-scale structures, fundamental for understanding physical and chemical properties, has been challenging. Now, researchers at Stanford University, USA, have demonstrated that high-resolution electron microscopy can be used to reveal a three-dimensional structure in which all gold atoms are observed. The results are in close agreement with a structure predicted at the University of Jyvskyl, Finland, on the basis of theoretical modelling and infrared spectroscopy (see Figure). The research was published in Science on 22 August 2014.

The revealed gold nanoparticle is 1.1 nm in diameter and contains 68 gold atoms organised in a crystalline fashion at the centre of the particle. The result was supported by small-angle X-ray scattering done in Lawrence Berkeley National Laboratory, USA, and by mass spectrometry done at Hokkaido University, Japan.

Electron microscopy is similar in principle to conventional light microscopy, with the exception that the wavelength of the electron beam used for imaging is close to the spacing of atoms in solid matter, about a tenth of a nanometre, in contrast with the wavelength of visible light, which is hundreds of nanometres. A crucial aspect of the new work is the irradiation of the nanoparticle with very few electrons to avoid perturbing the structure of the nanoparticle. The success of this approach opens the way to the determination of many more nanoparticle structures and to both fundamental understanding and practical applications.

The researchers involved in the work are Maia Azubel, Ai Leen Koh, David Bushnell and Roger D. Kornberg from Stanford University, Sami Malola, Jaakko Koivisto, Mika Pettersson and Hannu Hkkinen from the University of Jyvskyl, Greg
'/>"/>

Contact: Hannu Häkkinen
hannu.hakkinen@jyu.fi
Academy of Finland
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. NORD Announces Agenda for 2014 Rare Diseases and Orphan Products Breakthrough Summit
2. Unveiling Breakthroughs in Clinical & Cellular Immunology
3. Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster
4. Technion Breakthrough Opens New Avenues In Search For Alzheimers Cure
5. Science Magazine: Cancer Immunotherapy is the Medical Breakthrough of 2013; The CBCD Highlights the Link between Immunotherapy and Microcompetition
6. Organic mega flow battery promises breakthrough for renewable energy
7. Telomere Biosciences Announces: TELO-100 with T-Activator 150, a Breakthrough in Telomere Science and Age Management
8. Important breakthrough in identifying effect of epilepsy treatment
9. QB3 and JPMorgan Chase Announce Breakthrough Collaboration
10. Breakthrough in study of aluminum should yield new technological advances
11. Researchers discover breakthrough technique that could make electronics smaller and better
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A breakthrough in imaging gold nanoparticles to atomic resolution by electron microscopy
(Date:3/31/2015)... and VANCOUVER , March ... "Company") (TSX-V: EPI) announced today that it has filed ... US an Investigation New Drug ("IND") application related to ... cancer patients.  Approval of the IND application is required ... EPI-506 in the US.  The IND ...
(Date:3/31/2015)... Pittcon 2015, the 66th Conference and Exposition for ... in New Orleans with an economic impact to the ... New Orleans Convention and Visitor's Bureau. This global event ... Those who attended Pittcon for the first-time account ... year, the co-location of Food Labs Conference, organized by ...
(Date:3/31/2015)... YARDLEY, Pa. , March 31, 2015 /PRNewswire/ ... capabilities by integrating Mapi,s Medical Affairs and global ... Pharmacovigilance from a previously announced acquisition . ... operations are conducted by a global team ... professionals that have decades of experience in navigating ...
(Date:3/31/2015)... 2015  University of Illinois, ... the plenary session address on Monday, May 18 at ... , kicking off a week of more than 160 ... of RF and microwave technologies with health. ... and Circuits for the Skin," will focus on the ...
Breaking Biology Technology:ESSA Pharma Inc. Announces Filing of Investigational New Drug Application for EPI-506 2ESSA Pharma Inc. Announces Filing of Investigational New Drug Application for EPI-506 3ESSA Pharma Inc. Announces Filing of Investigational New Drug Application for EPI-506 4Pittcon 2015 Hits the Big Easy in a Big Way 2Pittcon 2015 Hits the Big Easy in a Big Way 3Pittcon 2015 Hits the Big Easy in a Big Way 4Mapi expands Pharmacovigilance and Risk Management capabilities 2Mapi expands Pharmacovigilance and Risk Management capabilities 3Health and Engineering Converge at the 2015 International Microwave Symposium 2Health and Engineering Converge at the 2015 International Microwave Symposium 3
... 30 MicroCHIPS, Inc., a developer of intelligent implant systems, today ... for its Illume™ product. The product was awarded Gold in the Science ... of people with diabetes who must manage their blood sugar intensively to ... "We are ...
... , SOUTH SAN FRANCISCO, Calif. , April ... on creating new therapeutics discovered using cellular reprogramming and ... has been awarded a three-year $1.5 million ... Medicine (CIRM). The grant will be used to fund ...
... VIENNA , April 29, 2010 ... an obnoxious plant called,Chinese Giant Knotweed, actually improve your brain function? , ... Scientists ... in the journal, American Journal of,Clinical Nutrition, which concludes that a relatively ...
Cached Biology Technology:MicroCHIPS Honored With 2010 Edison Best New Product Award 2iPierian Awarded Basic Biology Grant by California Institute of Regenerative Medicine to Study Cellular Reprogramming 2iPierian Awarded Basic Biology Grant by California Institute of Regenerative Medicine to Study Cellular Reprogramming 3Your Brain on Resveratrol 2Your Brain on Resveratrol 3Your Brain on Resveratrol 4Your Brain on Resveratrol 5
(Date:3/31/2015)...  Elephant Talk Communications Corp. (NYSE MKT: ETAK) ("Elephant ... Defined Network Architecture (ET Software DNA® 2.0) platforms and ... $20.4 million for the year ended December 31, 2014 ... year ended December 31, 2013. At ... its multi-year transition away from its legacy landline business ...
(Date:3/31/2015)... , March 31, 2015   Guidepoint , a ... of the Post-Surgical Pain Management TRACKER, part of the ... usage trends in the medical device and therapeutics markets. ... data including treatment volumes, market share, and adoption rates ... associated with joint surgery. The Post-Surgical Pain ...
(Date:3/30/2015)... DUBLIN , Mar. 26, 2015 Research and ... addition of the "Global Gesture Recognition Market in ... The analysts forecast the Global Gesture Recognition market ... 12.8% over the period 2013-2018. Gesture recognition ... respond to different gestures of an individual. Gesture recognition ...
Breaking Biology News(10 mins):Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6Guidepoint Launches Post-Surgical Pain Management TRACKER 2Guidepoint Launches Post-Surgical Pain Management TRACKER 3Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2
... When a study in her lab showed that mate ... in the activity of an enzyme that promotes HDL ... Illinois scientist Elvira de Mejia headed for Argentina where ... centuries. She returned with a five-year agreement signed ...
... taking place in London on Thursday 25 and Friday ... natural scientists with what is becoming the worlds largest ... genomics - the Economic and Social Research Council (ESRC) ... are often described as the ,genetic information, that makes ...
... 17, 2007 Just in time for Halloween, researchers are ... social stress, in an article scheduled for publication in the ... adults alike gear up for the anticipation and excitement of ... our inherent fear of the dark. Grillon ...
Cached Biology News:More on mate tea: lower cholesterol and an international agreement 2From GM farm animals to embryonic stem cell research 2From GM farm animals to embryonic stem cell research 3Social stress + darkness = increased anxiety 2
... The micro 1 is a dramatic breakthrough ... from 1mL with 10nL resolution, the micro 1 ... benchtop dispenser. And, the micro 1 never needs ... , Touch Screen programming on an LCD Display ...
... offer all of the features of a ... with Koehler illumination, a centerable condenser and ... is the workhorse of Motic's range of ... need for re-focusing following a change in ...
... Dye Primer Manual Cycle Sequencing Kit is ... primers and high-resolution fluorescence scanners. Sequencing reactions ... slab gel electrophoresis and scanning of the ... The kit components have been optimized ...
Rabbit polyclonal to Esa1 ( Abpromise for all tested applications)....
Biology Products: