Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Ultrathin device harvests electricity from human motion July 23rd, 2017

The July 23 close fly-by of asteroid 2017 BS5 is explored in a Q&A with Dr. John S. Lewis, chief scientist at Deep Space Industries July 23rd, 2017

Scientists announce the quest for high-index materials: All-dielectric nanophotonics: The quest for better materials and fabrication techniques July 22nd, 2017

Pulses of electrons manipulate nanomagnets and store information: Scientists use electron pulses to create and manipulate nanoscale magnetic excitations that can store data July 21st, 2017

Academic/Education

The Physics Department of Imperial College, London, uses the Quorum Q150T to deposit metals and ITO to make plasmonic sensors and electric contact pads July 13th, 2017

Oxford Instruments congratulates Lancaster University for inaugurating the IsoLab, built for studying quantum systems June 20th, 2017

The 2017 Winners for Generation Nano June 8th, 2017

MIT Energy Initiative awards 10 seed fund grants for early-stage energy research May 4th, 2017

Sensors

Giant enhancement of electromagnetic waves revealed within small dielectric particles: Scientists have done for the first time direct measurements of giant electromagnetic fields July 8th, 2017

Bosch announces high-performance MEMS acceleration sensors for wearables June 27th, 2017

Letiís Autonomous-Vehicle System Embedded in Infineonís AURIX Platform: Letiís Low-Power, Multi-Sensor System that Transforms Distance Data into Clear Information About the Driving Environment Will Be Demonstrated at ITS Meeting in Strasbourg, June 19-22 June 20th, 2017

New diode features optically controlled capacitance: Israeli researchers have developed a new optically tunable capacitor with embedded metal nanoparticles, creating a metal-insulator-semiconductor diode that is tunable by illumination. June 8th, 2017

Discoveries

Scientists announce the quest for high-index materials: All-dielectric nanophotonics: The quest for better materials and fabrication techniques July 22nd, 2017

Pulses of electrons manipulate nanomagnets and store information: Scientists use electron pulses to create and manipulate nanoscale magnetic excitations that can store data July 21st, 2017

The first light atomic nucleus with a second face July 20th, 2017

Semiliquid chains pulled out of a sea of microparticles July 20th, 2017

Announcements

Ultrathin device harvests electricity from human motion July 23rd, 2017

The July 23 close fly-by of asteroid 2017 BS5 is explored in a Q&A with Dr. John S. Lewis, chief scientist at Deep Space Industries July 23rd, 2017

Scientists announce the quest for high-index materials: All-dielectric nanophotonics: The quest for better materials and fabrication techniques July 22nd, 2017

Pulses of electrons manipulate nanomagnets and store information: Scientists use electron pulses to create and manipulate nanoscale magnetic excitations that can store data July 21st, 2017

Automotive/Transportation

Nanotech Advances Future Mobile Devices and Wearable Technology July 5th, 2017

Letiís Autonomous-Vehicle System Embedded in Infineonís AURIX Platform: Letiís Low-Power, Multi-Sensor System that Transforms Distance Data into Clear Information About the Driving Environment Will Be Demonstrated at ITS Meeting in Strasbourg, June 19-22 June 20th, 2017

Development of low-dimensional nanomaterials could revolutionize future technologies June 15th, 2017

GLOBALFOUNDRIES Launches 7nm ASIC Platform for Data Center, Machine Learning, and 5G Networks FX-7TM offering leverages the companyís 7nm: FinFET process to deliver best in class IP and Solutions June 13th, 2017

Industrial

3-D-printed jars in ball-milling experiments June 29th, 2017

Rice U. chemists create 3-D printed graphene foam June 22nd, 2017

Alloying materials of different structures offers new tool for controlling properties June 19th, 2017

Carbodeon demonstrates NanoDiamond nickel coatings with enhanced tribological properties June 7th, 2017

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