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

Physicists at the Georgia Institute of Technology have made important findings regarding gold on the nanoscale. They found that applying an electrical field on a surface-supported gold nanocluster changes its structure from a three-dimensional one to a planar flat structure. In another paper, they relate their discovery that gold in this size regime can be made magnetic through oxygenation of gold nanowires. They also found that up to a certain length, oxygenated gold nanowires behave as a conducting metal, but beyond that, they become insulators. This marks the first time on the nanoscale that such a metal-to-insulation transition has been found on the nanoscale. Both findings are important predictions that could some day be implemented as control parameters governing the chemical and physical material properties employed in nanotechnology.

The researchers focused their theoretical investigations on gold nanostructures because of the well known chemical inertness of gold in the bulk form, allowing one to maintain samples with minimal influence on the environment.

However, we again find that small is different, said Uzi Landman, Regents and Institute Professor, holder of the F.E. Callaway Chair, and director of the Center for Computational Materials Science, repeating a phrase that he coined and has used often for close to two decades. On the nanoscale, even gold becomes a potent catalyst, exhibiting new and surprising, chemical, mechanical, electrical and magnetic behavior, which could not have been extrapolated or predicted on the basis of our knowledge about this substance in the bulk form. Some of these systems may find technological uses in nanocatalysis and as chemical and electrical sensors, Landman added.

For the first study, which appears in the February 8 edition of Physical Review Letters, Landman and Research Scientist Bokwon Yoon performed first-principles quantum mechanical computer simulations of a 20-atom gold nanocl
'/>"/>

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:7/30/2015)... ... July 31, 2015 , ... Ralco is honored to announce that it ... Fair to be held August 5-9 in Marshall. The Ralco Enrichment Center is an ... and how agriculture impacts their daily lives. This unique exhibit also features a birthing ...
(Date:7/30/2015)... -- According to a new market research ... PKPD, Trial Design, Toxicity Prediction, In-house, Contract Service), by ... End Users - Global Forecast to 2020", published by ... 2,107.99 million by 2020 from USD 1,034.93 million in ... Browse more than 75 market ...
(Date:7/30/2015)... 30, 2015 Ascendis Pharma A/S (Nasdaq: ... its innovative TransCon technology to address significant unmet ... a six-month Phase 2 study to evaluate the ... in 53 treatment-naïve, pre-pubertal children with growth hormone ... pleased with the top-line results from our Phase ...
(Date:7/29/2015)... 30, 2015 Sanofi, a ... the second quarter of 2015. CEO Olivier ... its performance in different businesses. Watch ... http://www.eurobusinessmedia.com/ceo-direct/sanofi/sanofi-h1-2015-results-interview-with-ceo-olivier-brandicourt?utm_source=ceo-direct&utm_medium=wire Topics covered in the ... - Performance drivers - Diabetes ...
Breaking Biology Technology:Ralco Announces Primary Sponsorship of Ralco Enrichment Center at Lyon County Fair 2Biosimulation Market Worth 2,107.99 Million USD by 2020 2Biosimulation Market Worth 2,107.99 Million USD by 2020 3Biosimulation Market Worth 2,107.99 Million USD by 2020 4Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 2Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 3Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 4Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 5Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 6Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 7
... YORK, April 7, 2011 Reportlinker.com announces that ... its catalogue: Industrial Biotechnology China ... The Chinese central government was reported ... emission-reduction" in the Twelfth Five-Year (2011-2015) Plan. This ...
... in Spanish . Tekniker-IK4 is ... based on carbonaceous nanoparticles for application to sectors such ... to detect the pressure of the driver,s foot, a ... capacity, self-lubricating engine components, a low-cost and fire-resistant construction ...
... Cephalon, Inc. (Nasdaq: CEPH ) has scheduled ... results for 5:00 p.m. EDT on Tuesday, May 3, 2011. ... 2011 results will be distributed by PRNewswire4:50 p.m. EDT , ... toConference Code Number 67208985:00 p.m. EDT , Conference call begins ...
Cached Biology Technology:Reportlinker Adds Industrial Biotechnology China News 1103 2Reportlinker Adds Industrial Biotechnology China News 1103 3New materials based on carbon nanoparticles 2
(Date:7/9/2015)... , July 9, 2015  Synaptics Inc. ... of human interface solutions, today announced a ... first fully hardware encapsulated fingerprint sensor and ... technology is literally off the grid, isolating ... matching within the fingerprint sensor to provide ...
(Date:7/8/2015)... , N.J. and NEW YORK , July ... Guidepoint today announced BD & Guidepoint ... companies with free access to Guidepoint,s expert network services. ... that are developing cutting-edge technologies to improve healthcare delivery ... Guidepoint research manager, each start-up entrepreneur will be able ...
(Date:7/8/2015)... Florida , July 8, 2015 ... evolving as this summer,s must have products such as wearables, ... demand as popularity for biometrics based devices continues to rapidly ... NXT-ID, Inc. (NASDAQ: NXTD ), Google Inc. (NASDAQ: ... (NYSE: FIT ), GoPro, Inc. (NASDAQ: GPRO ) ...
Breaking Biology News(10 mins):Synaptics Announces World's First Match-in-Sensor Fingerprint Authentication Technology 2Synaptics Announces World's First Match-in-Sensor Fingerprint Authentication Technology 3BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 2BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 3Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 2Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 3Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 4Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 5Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 6
... 1.8 metres of DNA partitioned into 46 chromosomes. These ... daughter cells at every division. Condensation, the shortening of ... of genetic material during cell division and helps preventing ... European Molecular Biology Laboratory (EMBL) for the first time ...
... materials, invented by researchers at the University of Illinois, ... The new materials rely upon embedded, three-dimensional microvascular networks ... manner that a cut in the skin triggers blood ... materials will trigger the flow of healing agent to ...
... and hybrid cars have become popular symbols of green ... emissions of carbon dioxide, the leading greenhouse gas that ... called carbon sequestration, traps carbon dioxide after it is ... the atmosphere. The practice could transform heavy carbon spewers, ...
Cached Biology News:Researchers shed light on shrinking of chromosomes 2Now, self-healing materials can mimic human skin, healing again and again 2Researchers examine carbon capture and storage to combat global warming 2Researchers examine carbon capture and storage to combat global warming 3Researchers examine carbon capture and storage to combat global warming 4Researchers examine carbon capture and storage to combat global warming 5Researchers examine carbon capture and storage to combat global warming 6
... that oxidative stress is involved in atherosclerosis, ... is the condition in which an imbalance ... leading to the damage of a cell. ... is through several antioxidant systems4 that include ...
... Micro Kit provides a fast and simple procedure ... and other detergents from small samples of protein. ... protein resin as an ion exchanger. Each column ... either acidic or basic protein.A complete kit for ...
... cells form from a hematopoietic stem cells ... to the bone surface and lowering the ... around 4.5. The bone mineral is then ... and function is controlled primarily by Macrophage ...
... Receptor-gamma (PPAR) is a member of ... transcription factors that heterodimerize with retinoic ... in the regulation of glucose and ... class of anti-diabetic agents called thiazolidinediones ...
Biology Products: