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:11/26/2014)... 2014 The report on the Global ... the concerned market for revenue forecasts and market trends. ... of 51.9% from 2013 to 2018. At the projected ... of $1,415.6 million by 2018. , Browse through the ... for information about the market segmentation and in-depth analysis ...
(Date:11/26/2014)... 2014 In keeping with the holiday ... bevy of last-minute Thanksgiving savings. The company is offering ... all product lines this holiday weekend as well as ... Friday, and Cyber Monday are right around the corner, ... both loyal customers and those looking to explore their ...
(Date:11/26/2014)... , Nov. 26, 2014 The ... results from a survey of European physicians at ... on Innovation and Biological Therapies" at the Spanish ... event, hosted by EuropaBio and the Spanish Bioindustry ... of Health, physicians from Spanish oncology and rheumatology ...
(Date:11/26/2014)... PMG Research, Inc. announced today ... a network of sites that provide clinical research services to ... patient lives through its partnerships with large physician practices and ... site locations in the Southeastern United States and spans over ... board will be held by: Dr. Robert Holmes, ...
Breaking Biology Technology:Global Smart Sensor Market in Building Automation is expected to reach a value of $1,415.6 million by 2018 - Report by MicroMarket Monitor 2Global Smart Sensor Market in Building Automation is expected to reach a value of $1,415.6 million by 2018 - Report by MicroMarket Monitor 3Global Smart Sensor Market in Building Automation is expected to reach a value of $1,415.6 million by 2018 - Report by MicroMarket Monitor 4DNA Spectrum Offers Last Minute Thanksgiving Coupons 2DNA Spectrum Offers Last Minute Thanksgiving Coupons 3ASBM Presents European Physicians Survey at Spanish Ministry of Health 2PMG Research Names Medical Advisory Board 2PMG Research Names Medical Advisory Board 3
... , , , ... of hospital-related infections in the U.S. costs up to $11 billion a ... implanted in patients. Until now, efforts to control drug-resistant biofilms on such ... mats developed by collaborators Pat Mather and Dacheng Ren of the Syracuse ...
... ... announced the PX14400 high-speed digitizer, the industry,s most advanced wideband and high dynamic ... when using the programmable gain amplifier in 1 dB steps for maximum gain ... is employed for the cleanest possible signal path to the ADC. 1 GB ...
... /PRNewswire/ - Enerkem, a leading waste-to-biofuels and green chemicals ... by its partners, the City of Edmonton and the ... on their joint advanced energy research facility. The ceremony ... Advanced Education and Technology in Alberta, and the Edmonton ...
Cached Biology Technology:New Antimicrobial Webs Sterilize Medical Implants for 14 Days 2Signatec Unveils PX14400, Its High-Speed PCI-Express Digitizer Capable of Sustained Recordings Over 1.2 GB/s with Xilinx Virtex-5 FPGAs for Embedded Real-Time Processing 2Signatec Unveils PX14400, Its High-Speed PCI-Express Digitizer Capable of Sustained Recordings Over 1.2 GB/s with Xilinx Virtex-5 FPGAs for Embedded Real-Time Processing 3Signatec Unveils PX14400, Its High-Speed PCI-Express Digitizer Capable of Sustained Recordings Over 1.2 GB/s with Xilinx Virtex-5 FPGAs for Embedded Real-Time Processing 4Enerkem Announces Construction Start on Advanced Energy Research Facility in Edmonton, Alberta 2Enerkem Announces Construction Start on Advanced Energy Research Facility in Edmonton, Alberta 3
(Date:11/12/2014)... Nov. 12, 2014 Crossmatch™, a leading provider ... U.are.U ® fingerprint readers have been deployed throughout ... Central Mexico . The bakery chain implemented ... payroll issues caused by employees clocking in for each ... fingerprint readers, Montparnasse relied on paper timecards and a ...
(Date:11/7/2014)... Calif. , Nov. 7, 2014  In conjunction with ... Police Departments, The Community Foundation of the Verdugos ... DNA JUSTICE PROJECT," a $250,000 initiative to keep ... initial phase. In its first six months of existence, the ... needed evidence support for local law enforcement. "Because ...
(Date:11/6/2014)... is an asset for a predator. Except when that predator ... tiger beetle, relative to its size, is the fastest creature ... body lengths per second (at about five miles per hour). ... take the sprinting gold from the tiger beetle, a person ... The tiger beetle has a problem. At peak speeds, everything ...
Breaking Biology News(10 mins):Montparnasse Pasteleria Achieves Time and Attendance Transparency with Crossmatch U.are.U Fingerprint Readers 2Community Foundation Of The Verdugos Unveils Campaign To Fund Glendale-Burbank DNA Justice Project 2The tiger beetle: Too fast to see 2
... YORK, Feb. 17, 2011 A research group led by ... genetic variant that allows a fish in the Hudson River ... study published in the February 18, 2011, online issue of ... River fish apparently evolved rapidly in response to the toxic ...
... work. Researchers at Rochester Institute of Technology are ... is doubly "green" because algae consume nitrates and phosphates ... end result: clean wastewater and stock for a promising ... into receiving bodies of water at treatment plants, while ...
... research could eventually lead to new approaches for controlling ... which are caused by trypanosomes carried by the bloodsucking ... reproduction evolved very early and is now ubiquitous in ... living organisms except bacteria). However, real evidence is ...
Cached Biology News:A genetic mutation allows Hudson River fish to adapt to PCBs 2The green machine: Algae clean wastewater, convert to biodiesel 2Shining a light on trypanosome reproduction 2
... paper sandwiches are composed of a precut ... thick filter paper that are preassembled into ... These 7 x 8.5 cm membrane sandwiches ... Gel-sized gels and are supplied as a ...
... This kit is designed to knockout or alter ... less than one week. Red/ET recombination allows the ... precise, specific, and faithful manner. An FRT-flanked kanamycin ... which can be used to replace a gene ...
Recommended for use as a cell culture substratum at 0.1-0.2 mg/cm 2 or 5-10 μl/cm 2 . Optimal concentration depends on cell type as well as the application or research objectives. Type B...
... LIGHT. Useful in cell activation experiments when calcium dose-response ... Soluble in DMSO or EtOH. For use ... in DMSO is recommended. Microliter amounts of this solution ... mixing (e.g. 10 μl into 5 ml of H ...
Biology Products: