Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > NIU scientists find fast, easy way to make hydrogen nanosensors

Abstract:
A team of Northern Illinois University scientists, with a major role played by NIU Ph.D. students, has discovered a new, convenient and inexpensive way to make high performance hydrogen sensors using palladium nanowires.

NIU scientists find fast, easy way to make hydrogen nanosensors

DeKalb, IL | Posted on January 12th, 2011

The technology could help enable a scale-up for potential industrial applications, such as safety monitors in future hydrogen-powered vehicles.

Highly flammable hydrogen gas cannot be odorized like natural gas. The new technology produces nanoscale sensors that work extremely fast and would allow for closing of safety valves before dangerous concentrations of the gas could be reached.

Scientists have known that palladium nanowires demonstrated promise as hydrogen gas sensors in speed, sensitivity and ultra-low power consumption. But the utilization of single palladium nanowires faced challenges in several areas, including nanofabrication.

"We report on hydrogen sensors that take advantage of single palladium nanowires in high speed and sensitivity and that can be easily and cheaply made," said lead author Xiaoqiao (Vivian) Zeng, a Ph.D. student in chemistry and biochemistry at NIU. The new research is published in the January edition of the American Chemical Society's prestigious journal Nano Letters.

"The new types of hydrogen sensors are based on networks of ultra-small (< 10 nanometers) palladium nanowires achieved by sputter-depositing palladium onto the surface of a commercially available and inexpensive filtration membrane," Zeng said.

The research was conducted at both Northern Illinois University and Argonne National Laboratory. The scientists also found that the speed of the sensors increases with decreasing thicknesses of the palladium nanowires. The sensors are 10 to 100 times faster than their counterparts made of a continuous palladium film of the same thickness.

"The superior performance of the ultra-small palladium nanowire network-based sensors demonstrates the novelty of the fabrication approach, which can be used to fabricate high-performance sensors for other gases," said NIU Presidential Research Professor of Physics Zhili Xiao, leader of the research team and co-adviser to Zeng.

Xiao noted that Zeng's exceptional contribution to the research is particularly impressive for a Ph.D. candidate. Zeng came to NIU in the fall of 2008 after earning her master's degree from the University of Science and Technology Beijing. She is now a recipient of the NIU Nanoscience Fellowship, jointly supported by the university and Argonne.

"It is extremely competitive to publish an article in Nano Letters, which has a very high impact factor that is better even than the traditionally prestigious chemical and physical journals," Xiao said. "We're proud of Vivian's achievements and grateful for her creativity and diligence.

"Nanoresearch is truly interdisciplinary," Xiao added. "Chemists have undoubtedly demonstrated advantages in nanofabrication by utilizing methods of chemical synthesis to obtain extreme nanostructures, while physicists have strengths in exploration of new physical properties at the nanoscale. This research benefitted tremendously from Vivian's expertise in chemistry. In fact, the substrates used to form the novel networks of palladium nanowires are common filtration members known to chemists."

Other members of the research team included NIU Chemistry and Biochemistry Professor Tao Xu; NIU physics Ph.D. candidate Michael Latimer; NIU physics graduate student SriHarsha Panuganti; and physicist Ulrich Welp and senior physicist Wai-Kwong Kwok of Argonne's Materials Science Division.

####

Contacts:
Media Contact:
Tom Parisi
NIU Media Relations & Internal Communications
Phone: (815) 753-3635

Copyright © Northern Illinois University

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

'Lasers rewired': Scientists find a new way to make nanowire lasers: Berkeley Lab, UC Berkeley scientists adapt next-gen solar cell materials for a different purpose February 12th, 2016

Breaking cell barriers with retractable protein nanoneedles: Adapting a bacterial structure, Wyss Institute researchers develop protein actuators that can mechanically puncture cells February 12th, 2016

Replacement of Toxic Antibacterial Agents Possible by Biocompatible Polymeric Nanocomposites February 12th, 2016

Properties of Polymeric Nanofibers Optimized to Treat Damaged Body Tissues February 12th, 2016

Academic/Education

SUNY Poly and GLOBALFOUNDRIES Announce New $500M R&D Program in Albany To Accelerate Next Generation Chip Technology: Arrival of Second Cutting Edge EUV Lithography Tool Launches New Patterning Center That Will Generate Over 100 New High Tech Jobs at SUNY Poly February 9th, 2016

COD Grad Begins Postdoctoral Fellow at Harvard University: Marsela Jorgolli's Passion for Physics Has Led to a Decade of Academic Research That Continues at Harvard University as a Postdoctoral Fellow February 2nd, 2016

Heriot-Watt's Institute of Photonics & Quantum Sciences uses the Deben Microtest 2 kN tensile stage to characterise ceramics and engineering plastics January 21st, 2016

Multiple uses for the JPK NanoWizard AFM system in the Smart Interfaces in Environmental Nanotechnology Group at the University of Illinois at Urbana-Champaign January 20th, 2016

Sensors

Scientists have put a high precision blood assay into a simple test strip: Researchers have developed a new biosensor test system based on magnetic nanoparticles February 3rd, 2016

Nanosheet growth technique could revolutionize nanomaterial production February 1st, 2016

New record in nanoelectronics at ultralow temperatures January 28th, 2016

NBC LEARN DEBUTS SIX-PART VIDEO SERIES, “NANOTECHNOLOGY: SUPER SMALL SCIENCE” Produced by NBC Learn in partnership with the National Science Foundation, and narrated by NBC News/MSNBC’s Kate Snow, series highlights leading research in nanotechnology January 25th, 2016

Discoveries

'Lasers rewired': Scientists find a new way to make nanowire lasers: Berkeley Lab, UC Berkeley scientists adapt next-gen solar cell materials for a different purpose February 12th, 2016

Breaking cell barriers with retractable protein nanoneedles: Adapting a bacterial structure, Wyss Institute researchers develop protein actuators that can mechanically puncture cells February 12th, 2016

Replacement of Toxic Antibacterial Agents Possible by Biocompatible Polymeric Nanocomposites February 12th, 2016

Properties of Polymeric Nanofibers Optimized to Treat Damaged Body Tissues February 12th, 2016

Announcements

Graphene leans on glass to advance electronics: Scientists' use of common glass to optimize graphene's electronic properties could improve technologies from flat screens to solar cells February 12th, 2016

Breaking cell barriers with retractable protein nanoneedles: Adapting a bacterial structure, Wyss Institute researchers develop protein actuators that can mechanically puncture cells February 12th, 2016

Replacement of Toxic Antibacterial Agents Possible by Biocompatible Polymeric Nanocomposites February 12th, 2016

Properties of Polymeric Nanofibers Optimized to Treat Damaged Body Tissues February 12th, 2016

Automotive/Transportation

Electric-car battery materials could harm key soil bacteria February 11th, 2016

Canadian physicists discover new properties of superconductivity February 8th, 2016

Researchers develop completely new kind of polymer: Hybrid polymers could lead to new concepts in self-repairing materials, drug delivery and artificial muscles January 30th, 2016

An alternative to platinum: Iron-nitrogen compounds as catalysts in graphene January 28th, 2016

Industrial

Graphene leans on glass to advance electronics: Scientists' use of common glass to optimize graphene's electronic properties could improve technologies from flat screens to solar cells February 12th, 2016

A metal that behaves like water: Researchers describe new behaviors of graphene February 12th, 2016

Nature Materials: Smallest lattice structure worldwide: 3-D lattice with glassy carbon struts and braces of less than 200 nm in diameter has higher specific strength than most solids February 3rd, 2016

New sensors to combat the proliferation of bacteria in very high-humidity environments January 23rd, 2016

NanoNews-Digest
The latest news from around the world, FREE





  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic