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:4/17/2015)...  US-Australian drug discovery company, Novogen, today announced ... with the Feinstein Institute for Medical Research (,Feinstein ... to collaborate with the objective of developing effective ... brings together the drug discovery expertise of Novogen ... Feinstein Institute in neurosciences and oncology. ...
(Date:4/17/2015)... WI (PRWEB) April 17, 2015 ... sales and marketing support for the powerful Orthogonal ... the Chemical Genomics Center at the Lankenau Institute ... LCGC’s mission is to measurably improve successful drug ... HTS, by offering rare, drug-like libraries available nowhere ...
(Date:4/16/2015)... Cambridge Semantics , the leading ... Web technology, and Informa , the leading ... the academic and scientific, professional and commercial business ... Data Lake for Clinical Trial and Competitive Intelligence’ ... ‘Best of Show’ Award. , The solution ...
(Date:4/16/2015)... 16, 2015 Proove Biosciences , ... of BIO Contest for the 2015 BIO International ... 2015 BIO International Convention will take place June 15-18 ... the Buzz of BIO contest, industry leaders will be ... at the conference. The community voting period began on ...
Breaking Biology Technology:Novogen and Feinstein Institute Join Forces to Find Effective Treatments for Brain Cancer 2Novogen and Feinstein Institute Join Forces to Find Effective Treatments for Brain Cancer 3Novogen and Feinstein Institute Join Forces to Find Effective Treatments for Brain Cancer 4Novogen and Feinstein Institute Join Forces to Find Effective Treatments for Brain Cancer 5Novogen and Feinstein Institute Join Forces to Find Effective Treatments for Brain Cancer 6BellBrook Labs and Lankenau Institute Partner to Accelerate Drug Discovery using Orthogonal Pooled Screening 2Cambridge Semantics and Informa Named Bio-IT Award Finalist for Smart Data Lake Solution for Clinical Trial and Competitive Intelligence 2Cambridge Semantics and Informa Named Bio-IT Award Finalist for Smart Data Lake Solution for Clinical Trial and Competitive Intelligence 3Proove Bisociences to Participate in the Buzz of BIO at the 2015 BIO International Convention 2Proove Bisociences to Participate in the Buzz of BIO at the 2015 BIO International Convention 3
... Been Filed With the FDA for the Fourth Genmab ... Under the Company,s Collaboration with Roche., COPENHAGEN, December ... Investigational New Drug application (IND) for a,Genmab antibody developed ... the FDA by Roche. Genentech and Roche are collaborating ...
... Dec. 11 The Tauri Group LLC is ... provide Systems Engineering and,Technical Assistance (SETA) support for ... Health Affairs Early Detection Division Chemical,and Biological Early ... $38 million and the period of performance is ...
... 11 PPD, Inc. (Nasdaq:,PPDI) will release its fiscal ... the market closes. The release will be available on,the ... PR Newswire., On Wednesday, January 9, 2008, at ... and audio webcast to discuss its financial guidance for,fiscal ...
Cached Biology Technology:Fourth Genmab Antibody Developed Under Roche Collaboration to Enter Clinic 2Fourth Genmab Antibody Developed Under Roche Collaboration to Enter Clinic 3The Tauri Group LLC Awarded U.S. Department of Homeland Security Chemical and Biological Early Detection Systems Program Office Support Contract 2PPD Announces 2008 Financial Guidance Webcast and Conference Call 2
(Date:4/2/2015)... , April 2, 2015 According ... 2015 attributed to somewhat higher than 125 MSEK. This ... year-end report 2014 that revenues for Q1 2015 would ... company reported for Q4 2014. The operating result for ... negative. The complete interim report will as previously communicated ...
(Date:4/1/2015)... , April 1, 2015   Medisafe ™, the ... users across iOS and Android ... integrating biofeedback into the platform to allow patients to ... For the first time, patients will be able to ... dose impacts important biometrics, such as glucose levels and ...
(Date:3/30/2015)... Mar. 26, 2015 Research and Markets ... "Global Gesture Recognition Market in Automotive Sector 2014-2018" ... forecast the Global Gesture Recognition market in Automotive Sector ... period 2013-2018. Gesture recognition is the ability ... gestures of an individual. Gesture recognition technology can be ...
Breaking Biology News(10 mins):Fingerprint Cards Revises Revenues for Q1 2015 2Medisafe Announces Launch of Biometric Integration, Enabling Patients to Stay Adherent to Their Meds and See Tangible Health Results 2Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2
... unique aroma signature of the durian revered as the ... the world,s foulest smelling food has uncovered several new ... ACS, Journal of Agricultural and Food Chemistry . ... food shops in the United States and elsewhere, has a ...
... in a Duke University-led study contained potentially toxic or untested chemical ... Among the chemicals detected was "Tris," a chlorinated flame ... studies. "Tris was phased out from use in ... it still showed up in 41 percent of the couch foam ...
... Toronto, ON (27 November, 2012) -- A new method of ... The discovery, which transforms aged stem cells into cells that ... to grow cardiac patches for damaged or diseased hearts from ... avoiding the threat of rejection. Stem cell therapies ...
Cached Biology News:Potentially toxic flame retardants found in many US couches 2'Fountain of youth' technique rejuvenates aging stem cells 2
Immunogen: Recombinant rabbit tryptophan hydroxylase, isolated as inclusion bodies from E. coli and purified by preparative SDS-PAGE. Storage: -20 C, Avoid Freeze/Thaw Cycles...
Inquire...
... Isoaspartate Detection Kit is intended for quantitative ... and peptides, which can result from the ... of aspartic acid residues during storage or ... on the monitoring of charge differences for ...
...
Biology Products: