Navigation Links
Physicists discover gold can be magnetic on the nanoscale
Date:3/3/2008

uctures through the application of external electric fields may open novel directions and increase the range and applications of nanocatalytic systems and chemically based sensors and catalytic switches.

The second finding, which appears in the February 1 edition of the same journal, answers the question of what happens when a nanowire of gold is pulled in the presence of oxygen. In these studies Landman, Postdoctoral Fellow Chun Zhang and Senior Research Scientist Robert Barnett used first-principles simulations and quantum electrical transport calculations. They found that oxygenated gold nanowires exhibit different properties, depending on whether the oxygen is incorporated in a molecular form or as individual atoms. Indeed, some of these theoretical results offer a new interpretation of recent laboratory experiments on oxygenated gold nanowires.

In the case of incorporation of molecular oxygen into the gold nanowire, the simulations revealed that the nanowires can be stretched to a significantly longer extent than pure gold nanowires in other words, the adsorbed oxygen molecule serves as a reinforcing clamp.

Furthermore, the simulations predict that up to a certain stretching distance (typically up to wires that resemble a stretched necklace of about six gold atoms and an embedded oxygen molecule), such nanowires will conduct electrons similar to a pure gold nanowire. These results have been confirmed experimentally. Moreover, the simulations predict that oxygenated gold nanowires extended beyond a length of about six gold atoms become insulating. The conducting state can be restored by a slight contraction of the wire, thus allowing distance - dependent sensitive metal-to-insulator nano-switching.

When individual oxygen atoms, rather than an oxygen molecule, are incorporated in the gold nanowire, the elongation range was found to be limited and the electrical conductance was predicted to be lower than in the previous case of
'/>"/>

Contact: David Terraso
david.terraso@comm.gatech.edu
404-385-2966
Georgia Institute of Technology
Source:Eurekalert  

Page: 1 2 3 4

Related biology technology :

1. Sheet of carbon atoms acts like a billiard table, physicists find
2. Sheet of carbon atoms acts like a billiard table, physicists find
3. Physicists pin down spin of surface atoms
4. Surface dislocation nucleation: Strength is but skin deep at the nanoscale, Penn engineers discover
5. BioCrossroads Launches www.biocrossroadslinx.com and Releases Report on Biopharma Discovery and Development Contract Services
6. European Company NovaSecta Joins First Chinese CRO Service Alliance for Drug Discovery Solutions
7. Contract Services for Big Pharma and Biotechs Driving Growth and Innovation from Discovery to Clinical Trials
8. Xenon Announces Appointment of VP, Discovery Research
9. Velcura Therapeutics, Inc. Teams with International Discovery Sourcing Consultants to Develop New Therapeutic Molecules for Cancer and Bone Disease
10. deCODE Discovers Gene Variants that May Help to Distribute the Work of Evolution between Men and Women
11. ChemDiv and Achaogen Enter Into a Discovery Collaboration
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Physicists discover gold can be magnetic on the nanoscale
(Date:12/19/2014)... MA (PRWEB) December 18, 2014 LayerBio ... for ophthalmology and wound care. The National Eye Institute ... awarded LayerBio a Phase I SBIR grant to develop ... Cataracts are the most common cause of vision loss ... of blindness worldwide. According to Dr. Ken Mandell, LayerBio’s ...
(Date:12/19/2014)... 18, 2014 iLab Solutions, the global ... of Siri Bryant as the new Director of Institutional ... Core Implementations. These two new leadership positions were created ... by ensuring that iLab continues to meet the needs ... four years, iLab has been deployed at over 450 ...
(Date:12/19/2014)... San Diego, CA (PRWEB) December 18, 2014 ... announces a limited time special on Sartorius Biohit ... 1 Free on mLINE pipettes, Picus Electronic Pipette Trade-in ... recommended by Health and Safety officers around the world. ... repetitive manual pipetting. Other features include:, , ...
(Date:12/19/2014)...   ISN has released its third annual ... publication series. With data aggregated from over eight ... within its online contractor management platform, ISNetworld, this three-part ... (KPI) statistics. The Contractor ... is available in two industry specific volumes: Oil ...
Breaking Biology Technology:LayerBio Awarded NIH Grant to Develop a Drug Delivery Device for Cataract Surgery 2iLab Solutions Announces Two New Leadership Positions to Meet the Needs of Its Growing Customer Base 2Major Pipette Distributor Pipette.com Announces Sartorius Year End Specials 2ISN Releases Third Edition of US Contractor Health & Safety Performance Indicators Publication Series 2ISN Releases Third Edition of US Contractor Health & Safety Performance Indicators Publication Series 3
... (Nasdaq: ERES ), a leading provider of centralized ... medical device, and related industries, announced today results for the ... numbers refer to changes from the same period a year ... , ...
... of Alcohol-Based SanitizersCHARLOTTE, N.C., April 30 When widespread ... to protect themselves and their loved ones. Fortunately, an ... illnesses such as Swine Flu (H1N1 Influenza) is as ... Remi-D, an all-natural hand sanitizer, kills 99.99% of germs ...
... of outstanding convertible debentures of Victhom , to ... April 30 /PRNewswire-FirstCall/ - Victhom Human Bionics Inc. ... ("Otto Bock") announced today the execution on April ... a joint venture to develop and commercialize products ...
Cached Biology Technology:ERT Reports First Quarter 2009 Results 2ERT Reports First Quarter 2009 Results 3ERT Reports First Quarter 2009 Results 4ERT Reports First Quarter 2009 Results 5ERT Reports First Quarter 2009 Results 6ERT Reports First Quarter 2009 Results 7ERT Reports First Quarter 2009 Results 8ERT Reports First Quarter 2009 Results 9Swine Flu a Reminder: Using Hand Sanitizers Like Remi-D Helps Fight Infection 2Victhom and Otto Bock sign partnership agreement to establish joint venture for Neurobionix activities 2Victhom and Otto Bock sign partnership agreement to establish joint venture for Neurobionix activities 3Victhom and Otto Bock sign partnership agreement to establish joint venture for Neurobionix activities 4Victhom and Otto Bock sign partnership agreement to establish joint venture for Neurobionix activities 5
(Date:12/3/2014)... Ariz. , Dec. 2, 2014 As ... hand readers, Inception Technologies is pleased to announce the ... easier for customers to collect the workforce data that ... problems that have been left by existing readers. Many ... user interface, connectivity and modern technology. Older models force ...
(Date:11/21/2014)... Strict laws against distracted driving and the ... American and European automotive sector towards gesture recognition technologies. ... that are intuitive and able to retrieve information with ... New analysis from Frost & Sullivan,s Strategic ... Europe and North America ...
(Date:11/18/2014)... WASHINGTON , Nov. 18, 2014  The ... Security Industry Association today jointly announce the formation ... and release of its Identity and Biometric ... (Framework). The Framework received official support from BORDERPOL, ... governments to improve and provide expertise regarding border ...
Breaking Biology News(10 mins):Inception Technologies to Release New Biometric Reader 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 2Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 3
... in the open Pacific Ocean ecosystem since around 1850, according ... Santa Cruz. The findings, published December 15 in Nature ... food web observed in recent decades in the North Pacific ... at the end of the Little Ice Age. Deep-sea ...
... fuse with macrophages, the immune system,s healthy scavenger cells, play ... cancer to other areas of the body, according to research ... for Cell Biology annual meeting in New Orleans. ... at Oregon Health & Science University (OHSU) in Portland followed ...
... of immune cells, in the microenvironment surrounding the lethal ... extended survival of laboratory mice with the cancer, scientists ... Society for Cell Biology (ASCB) annual meeting in New ... death, were higher in the mice treated with the ...
Cached Biology News:Deep-sea corals record dramatic long-term shift in Pacific Ocean ecosystem 2Deep-sea corals record dramatic long-term shift in Pacific Ocean ecosystem 3Deep-sea corals record dramatic long-term shift in Pacific Ocean ecosystem 4Spontaneous fusion with macrophages empowers cancer cells to spread 2Blocking tumor-associated macrophages decreased glioblastoma's growth & extended survival in mice 2
... The RapidPlate 96/384 workstation offers precise ... highly scalable format. Utilizing 100ul and 200ul ... head delivers excellent accuracy and precision across ... position rotary deck includes two positions that ...
... you reduce the chance of error. Thats ... Developed using Beckman Coulters extensive experience in ... technology, the CEQ 8000 is a fully ... fills the capillary array with a patented ...
... The AquaMax DW4 liquid handling system from ... washing all in one instrument. The system ... dispensing and plate washing96-, 384- and 1536-welland ... washing. AquaMax DW4 has been optimized to ...
... Software enables you to identify over ... can distinguish protein isoforms, protein subsets, ... also visualize peptide-protein associations and relationships ... protein identification and relative protein expression ...
Biology Products: