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:3/4/2015)... March 4, 2015 ... Paris en décembre 2011, l,étude ...   », qui compare   l es ...   sorafénib dans le carcinome hépatocellulaire avancé, a ... du foie avancé   ; les résultats sont ...
(Date:3/3/2015)... 03, 2015 Experts and industry insiders ... one event: the Alltech REBELation exploring innovation, inspiration and ... Now in its 31st year, Alltech’s annual international conference ... and the opportunity to join the REBELation at an ... 11:59 p.m. EST, at which point the standard early ...
(Date:3/3/2015)... -- Adaptive Biotechnologies announced today that Chad Cohen ... Director as Chair of the Audit Committee. ... all finance, treasury and accounting functions. Since joining Zillow ... and accounting functions, and led the finance organization through ... was named Puget Sound Business Journal,s CFO of the ...
(Date:3/3/2015)... Calif. (PRWEB) March 03, 2015 The ... management excellence were honored by the Global Supply ... event which took place on Wednesday, February 25th, 2015, ... The GSCRC was formed to bring together supply chain ... leaders to advance the professional discipline through opportunities to ...
Breaking Biology Technology:Traitement du cancer primitif du foie : Recrutement terminé pour l'étude SARAH et résultats attendus fin 2016 2Traitement du cancer primitif du foie : Recrutement terminé pour l'étude SARAH et résultats attendus fin 2016 3Traitement du cancer primitif du foie : Recrutement terminé pour l'étude SARAH et résultats attendus fin 2016 4Traitement du cancer primitif du foie : Recrutement terminé pour l'étude SARAH et résultats attendus fin 2016 5Traitement du cancer primitif du foie : Recrutement terminé pour l'étude SARAH et résultats attendus fin 2016 6World-renowned Leaders, Authors and Businesspeople Join the Alltech REBELation 2World-renowned Leaders, Authors and Businesspeople Join the Alltech REBELation 3World-renowned Leaders, Authors and Businesspeople Join the Alltech REBELation 4Adaptive Biotechnologies adds Chad Cohen, Zillow Group CFO, to Board of Directors 2Global Supply Chain Resiliency Council Names Award Winners 2Global Supply Chain Resiliency Council Names Award Winners 3Global Supply Chain Resiliency Council Names Award Winners 4
... Aug. 16, 2011 Quanterix Corporation, a company ... based on its revolutionary Si ngle ... STRATEC Biomedical AG (Frankfurt: SBS; Prime Standard, TecDAX), ... of automated analyzer systems, today announced an agreement ...
... The Society of Interventional Radiology Foundation launched a ... the future of the specialty with its announcement ... student conducting preclinical research in interventional radiology during ... prestigious Medical Research Fellows Program. (Logo: ...
... 2011 PharmAthene, Inc. (NYSE Amex: PIP ... and chemical threats, announced today that the Company has ... of Defense (DoD) Broad Agency Announcement for studies directed ... the bioproduction of its nerve agent medical countermeasure program. ...
Cached Biology Technology:Quanterix and STRATEC Announce Strategic Partnership 2Quanterix and STRATEC Announce Strategic Partnership 3Society of Interventional Radiology Foundation Funds Howard Hughes Medical Institute Award 2Society of Interventional Radiology Foundation Funds Howard Hughes Medical Institute Award 3Department of Defense Awards $5.7 Million Contract to PharmAthene for Nerve Agent Medical Countermeasure Program 2Department of Defense Awards $5.7 Million Contract to PharmAthene for Nerve Agent Medical Countermeasure Program 3Department of Defense Awards $5.7 Million Contract to PharmAthene for Nerve Agent Medical Countermeasure Program 4
(Date:2/5/2015)... 28, 2015 New Market Research ... Segment Forecasts To 2020 has Been Added to GrandViewReseach.com ... is expected to reach USD 5.10 billion by 2020, ... Inc. IR cameras help identify the site of tissue ... witness surging demand in medical imaging applications. They have ...
(Date:1/22/2015)... Markets ( http://www.researchandmarkets.com/research/4trb7t/biometrics_a ) has announced the addition ... report to their offering. , The primary ... is who she/he is claiming to be, and for this ... physical characteristics, such as fingerprint, hand or palm print, iris, ...
(Date:1/22/2015)... MADISON, Wis. , Jan. 15, 2015  BellBrook ... for drug discovery, announced the launch of a ... of the company,s Transcreener UDP Assay, a high ... enzymes. The new assay will allow for sensitive ...
Breaking Biology News(10 mins):IR Camera Market Worth $5.10 Billion By 2020: Grand View Research, Inc. 2IR Camera Market Worth $5.10 Billion By 2020: Grand View Research, Inc. 3Biometrics - A Global Market Overview 2Biometrics - A Global Market Overview 3BellBrook Labs Launches a High Throughput Screening Assay for Glycosyltransferases with TR-FRET Readout 2
... Novartis announced today that scientists at the Novartis ... from the Genomics Institute of the Novartis Research Foundation ... The Scripps Research Institute have discovered a novel compound ... drug resistant malaria. Major support for the project was ...
... California Institute of Technology (Caltech) have devised a new ... visualize the structure of molecules. The technique, which was ... water coats surfaces at room temperature, can also be ... molecules, including antibodies and other biomolecules. A paper ...
... of the first implantable artificial kidney, in a development ... The device, which would include thousands of microscopic ... metabolic and water-balancing roles of a real kidney, is ... and physicians nationwide, led by Shuvo Roy, PhD, in ...
Cached Biology News:Novartis and collaborators discover novel antimalarial drug candidate 2Novartis and collaborators discover novel antimalarial drug candidate 3Caltech chemists develop simple technique to visualize atomic-scale structures 2Caltech chemists develop simple technique to visualize atomic-scale structures 3UCSF unveils model for implantable artificial kidney to replace dialysis 2UCSF unveils model for implantable artificial kidney to replace dialysis 3