Navigation Links
Pitt researchers coax gold into nanowires
Date:2/21/2012

Researchers at the University of Pittsburgh have coaxed gold into nanowires as a way of creating an inexpensive material for detecting poisonous gases found in natural gas. Along with colleagues at the National Energy Technology Laboratory (NETL), Alexander Star, associate professor of chemistry in Pitt's Kenneth P. Dietrich School of Arts and Sciences and principal investigator of the research project, developed a self-assembly method that uses scaffolds (a structure used to hold up or support another material) to grow gold nanowires. Their findings, titled "Welding of Gold Nanoparticles on Graphitic Templates for Chemical Sensing," were published online Jan. 22 in the Journal of the American Chemical Society.

"The most common methods to sense gases require bulky and expensive equipment," says Star. "Chip-based sensors that rely on nanomaterials for detection would be less expensive and more portable as workers could wear them to monitor poisonous gases, such as hydrogen sulfide."

Star and his research team determined gold nanomaterials would be ideal for detecting hydrogen sulfide owing to gold's high affinity for sulfur and unique physical properties of nanomaterials. They experimented with carbon nanotubes and graphenean atomic-scale chicken wire made of carbon atomsand used computer modeling, X-ray diffraction, and transmission electron microscopy to study the self-assembly process. They also tested the resulting materials' responses to hydrogen sulfide.

"To produce the gold nanowires, we suspended nanotubes in water with gold-containing chloroauric acid," says Star. "As we stirred and heated the mixture, the gold reduced and formed nanoparticles on the outer walls of the tubes. The result was a highly conductive jumble of gold nanowires and carbon nanotubes."

To test the nanowires' ability to detect hydrogen sulfide, Star and his colleagues cast a film of the composite material onto a chip patterned with gold el
'/>"/>

Contact: B. Rose Huber
rhuber@pitt.edu
412-624-4356
University of Pittsburgh
Source:Eurekalert

Page: 1 2

Related biology technology :

1. York researchers create tornados inside electron microscopes
2. Self-assembling nanorods: Berkeley Lab researchers obtain 1-, 2- and 3-D nanorod arrays and networks
3. Navy researchers investigate small-scale autonomous planetary explorers
4. Notre Dame researchers develop paint-on solar cells
5. Quantum computing has applications in magnetic imaging, say Pitt researchers
6. Researchers measure nanometer scale temperature
7. Notre Dame researchers demonstrate new DNA detection technique
8. Researchers realize high-power, narrowband terahertz source at room temperature
9. MU researchers identify key plant immune response in fight against bacteria
10. Researchers develop one of the worlds smallest electronic circuits
11. Two Top Biological Imaging Centers Offer Powerful Free Online Tool to Researchers, Educators, and Public
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/31/2015)... March 31, 2015  The Myeloma Crowd Research Initiative ... of ten proposals that will now be evaluated ... patient-led, scientifically validated funding initiative uncovering solutions for ... of the MCRI included preliminary vetting by the ... large number of innovative projects focusing on high-risk ...
(Date:3/31/2015)... March 31, 2015 This June 13th, ... the top U.S and International Medical Schools will come ... research on the application of stem cell therapy in ... is organized and funded by the Ocular Research ... has been convening intimate meetings of top experts in ...
(Date:3/31/2015)... Lighthouse Information Systems, Inc., a ... California, Oregon, Washington and clients across the US, ... Acquisition (M&A) Integration Services offering, effective immediately. ... and M&A Integration Practice Leader at Lighthouse, explains, ... of M&A initiatives fail to achieve their intended ...
(Date:3/30/2015)... Calif. , March 30, 2015  Multiple new ... positively affect several important health factors. From their impact ... to their positive effect on both gut health and ... 2015 (EB) detail our latest understanding of walnuts, inner ... Boston , this annual meeting attracts an ...
Breaking Biology Technology:Myeloma Crowd Research Initiative Selects 10 High-Risk Multiple Myeloma Proposals For Further Review 2Sight Restoration Through Stem Cell Therapy - Subject of June Symposium of Experts 2Lighthouse Information Systems, Inc., Announces Addition of M&A Integration Services 2New Findings Support the Benefits of Eating Walnuts on Overall Health 2New Findings Support the Benefits of Eating Walnuts on Overall Health 3New Findings Support the Benefits of Eating Walnuts on Overall Health 4
... Highlighted by Cinryze(TM) [C1 Inhibitor (human)] Commercial Launch --EXTON, Pa., ... reported today its financial results for the fourth quarter and ... include:Operational: , , , ... Inc. (Lev) in October 2008; , ...
... Feb. 24 Mach One Corporation (Pink Sheets: MNCN), ... purchase of Ceres Organic Harvest, Inc. an organic grain ... feed and dairy industries. Ceres Organic Harvest had 2008 ... the stock of Ceres for $8 million in a ...
... (USA) Inc ("MINDSET") a company privately held by MPM ... received a Notice of Allowance in Europe related to ... for the prevention and treatment of memory loss. Drugs ... been approved for the treatment of type II diabetes ...
Cached Biology Technology:ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 2ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 3ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 4ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 5ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 6ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 7ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 8ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 9ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 10ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 11ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 12Mach One Corporation Completes Acquisition of Ceres Organic Harvest, Inc. 2Mindset BioPharmaceuticals (USA) Inc Obtains Notice of Allowance for European Patent Related to Use of Insulin Sensitizers in Senile Dementia, Dementia and Memory Loss 2Mindset BioPharmaceuticals (USA) Inc Obtains Notice of Allowance for European Patent Related to Use of Insulin Sensitizers in Senile Dementia, Dementia and Memory Loss 3
(Date:3/12/2015)... -- IriTech, a leading iris based identity management technology ... Design Network, announced today that the Chief Minister ... MK2120U device during a launching event of Andhra Pradesh ... The iris scanner is manufactured by U.S. based ... India through its Indian partner, Biometronic Technology, ...
(Date:3/11/2015)... March 11, 2015   The Sync Project™ ... to scientifically measure and harness music to improve ... biometrics and objective measurements of physiology, enabling the ... scale in large populations. It is designed for ... clinicians perform rigorous studies and accelerate the discovery ...
(Date:3/5/2015)... In Brazil , cloud computing is fast ... and 42 percent planning to invest in them by the ... the companies will be investing in these solutions for the ... the region are currently opting for the private cloud model, ... attention in the coming years. This trend is in line ...
Breaking Biology News(10 mins):Indian States See IriTech's Scanner Bolstering Efficiency of Authentication for Aadhaar 2Indian States See IriTech's Scanner Bolstering Efficiency of Authentication for Aadhaar 3Introducing The Sync Project, a Global Collaboration Harnessing the Scientific Potential of Music for Health 2Introducing The Sync Project, a Global Collaboration Harnessing the Scientific Potential of Music for Health 3Two of Every Three Brazilian Companies will have Invested in Cloud by 2015, Finds Frost & Sullivan 2Two of Every Three Brazilian Companies will have Invested in Cloud by 2015, Finds Frost & Sullivan 3Two of Every Three Brazilian Companies will have Invested in Cloud by 2015, Finds Frost & Sullivan 4
... centuries, humans have been exploring, researching, and, in some ... life spans, and obtain immortality. Biologists, doctors, spiritual ... the most well-known examples being the legendary search by ... the key to longevity may not lie in a ...
... Victor Gibeault , a cooperative extension specialist, emeritus, ... 2013 United States Golf Association ( USGA ) Green ... honor those persons who deserve special recognition for distinguished ... award will be presented to Gibeault on Feb. 8, ...
... synchrotron-based imaging techniques to identify previously unseen anatomy preserved in ... old lizard skin identified the presence of teeth (invisible to ... animal was more than just a skin moult. This was ... universe, x-rays generated by a synchrotron. Dr Phil ...
Cached Biology News:Do palm trees hold the key to immortality? 2Do palm trees hold the key to immortality? 3Do palm trees hold the key to immortality? 4UC Riverside turfgrass specialist receives high honor 2Prehistoric ghosts revealing new details 2
...
... from vaccinia virus is a type I ... negative superhelical turns (also called right- and ... product of the reaction is a covalently ... negative superhelical turns. DNA Topoisomerase I does ...
Applications include ELISA, immunochemistry, and Western blotting. Working Concentrations: ELISA: 0.005-0.05 U/ml, immunohisto/cytochemistry: 0.25-0.5 U/ml, Western blot: 0.1-0.25 U/ml....
...
Biology Products: