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:7/1/2015)... ALTO, Calif. , July 1, 2015 /PRNewswire/ ... focused on the development of groundbreaking drugs to ... (ALS), announced today that Robert G. Miller ... Center at Sutter Health,s California Pacific Medical Center ... The ALS Association for $1.5 million to help ...
(Date:7/1/2015)... ... , ... A newly launched business plan contest will ask startup companies from ... life sciences R&D. The Pistoia Alliance President’s Startup Challenge 2015 will see small and ... of expert mentorship from a senior industry figure drawn from the Pistoia Alliance membership. ...
(Date:7/1/2015)... (PRWEB) , ... July 01, 2015 , ... ... sterilized to combat pathogen transmission. CTI’ new Medical Joysticks have an impermeable ... devices now have an operator control device that will increase healthcare worker safety ...
(Date:6/30/2015)... , ... June 30, 2015 , ... ... 12 to take part in the first half of “Integrative Biotechnology,” an applied ... partnership established in summer 2014, this course combines students from both universities and ...
Breaking Biology Technology:Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 2Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 3Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 4Pistoia Alliance Launches Startup Challenge 2Pistoia Alliance Launches Startup Challenge 3Sanitized Medical Joysticks for a Safer and Healthier Work Environment 2Rivier University and Beijing City University Academic and Cultural Exchanges Begin 2
... - Ranked Number 7 out of top 20 Employers ... 9 EMD Serono, Inc., an affiliate,of Merck KGaA, ... Science magazine as a top employer in the biotechnology ... 20 employers,across the life sciences., "We are honored ...
... (Nasdaq: ERES ), a leading provider of ... to the pharmaceutical,biotechnology, medical device, and related industries, ... quarter results for the period ended,September 30, 2008 ... closes.,After the release, the Company will host a ...
... Million RMB Commercial Bank Loan With Interest Payment ... Biotech Ltd. (Amex:,SVA), a vaccine-focused biotech company in ... Promotion Association at the,Zhongguancun Science and Technology Park ... of that program, Sinovac Biotech Co. Ltd.,s,("the Company") ...
Cached Biology Technology:EMD Serono Named as a Top Employer by Science Magazine 2eResearchTechnology, Inc. to Announce 2008 Third Quarter Results on October 30, 2008 2Sinovac's Credit Rating Upgraded to AAZ, Second Highest Rating 2Sinovac's Credit Rating Upgraded to AAZ, Second Highest Rating 3
(Date:6/24/2015)... 24, 2015 This report provides market analysis ... six years. It contains an analysis of the drivers, ... their impact from the short, medium, and long term ... industry, market, and technology trends that currently, prevail in ... concerned authorities to efficiently manage the increasing marine traffic ...
(Date:6/23/2015)... June 22, 2015 ... addition of the "Body-Worn Temperature Sensors Market ... and Forecast 2014 - 2020" report to ... analysis of the global body-worn temperature sensors market. ... segmented on the basis of types, care setting, ...
(Date:6/17/2015)... , Deutschland und GERMANTOWN, Maryland , ... ®   Produktlinie mit DNA-Tests verbessert ... N.V. (NASDAQ: QGEN ; Frankfurt Prime Standard: QIA) ... neue STR-Testkits der Produktlinie Investigator ® ... den Markt eingeführt. Die neuen Kits zur Erstellung genetischer ...
Breaking Biology News(10 mins):Automatic Identification System Market by Class, by Platform, by Application and by Geography - Global Forecasts & Analysis to 2014 - 2020 2Body-Worn Temperature Sensors Market - Global Industry Analysis 2QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 2QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 3QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 4QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 5QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 6
... goats and other animals that have suffered from neglect, according ... In this first scientific study of rescued animals, the researchers ... poor welfare, such as inappropriate diet, and lack of space ... spatial awareness test, which involved giving the animals an opportunity ...
... special issue of Technology and Innovation ... ), devoted to studies on medical technology and health ... from new technologies to reduce the cost of health ... special issue of Technology and Innovation on ...
... gas development expands nationwide, policymakers, communities and public health ... as a means of predicting the effects of drilling ... the Colorado School of Public Health. The report, ... Public Health , highlights lessons learned when scientists from ...
Cached Biology News:Rescue me: New study finds animals do recover from neglect 2Technology transforms health care 2Technology transforms health care 3Health impact assessments prove critical public health tool 2
... is the most thoroughly characterized enzyme available ... its overall utility and efficacy. , Its ... PCR applications. , It is QC ... AmpliTaq DNA Polymerase is a 94 kDa ...
Taq DNA Polymerase (T. aquaticus), 4 x 250 units. For PCR and other procedures requiring DNA polymerase activity at elevated temperatures. Category: Nucleotides & Enzymes & Biochemicals, Modifying En...
... DNA Polymerase is a versatile and easy-to ... PCR applications. GCpro Taq DNA Polymerase is ... E. coli, containing the DNA polymerase I ... a highly processive 5'-3' DNA polymerase activity. ...
Aspergillus (IgG) Ab EIA Sample Size: 100 l...
Biology Products: