Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > New silver-based ink has applications in electronics, researchers say

Abstract:
A new ink developed by researchers at the University of Illinois allows them to write their own silver linings.

The ink, composed of silver nanoparticles, can be used in electronic and optoelectronic applications to create flexible, stretchable and spanning microelectrodes that carry signals from one circuit element to another. The printed microelectrodes can withstand repeated bending and stretching with minimal change in their electrical properties.

New silver-based ink has applications in electronics, researchers say

Champaign, IL | Posted on February 12th, 2009

In a paper to be published Feb. 12, by Science Express, the online version of the journal Science, Jennifer Lewis, the Thurnauer Professor of Materials Science and Engineering and director of the university's Frederick Seitz Materials Research Laboratory, and her collaborators demonstrate patterned silver microelectrodes by omnidirectional printing of concentrated nanoparticle inks with minimum widths of about 2 microns on semiconductor, plastic and glass substrates.

"Unlike inkjet or screen printing, our approach enables the microelectrodes to be printed out-of-plane, allowing them to directly cross pre-existing patterned features through the formation of spanning arches," Lewis said. "Typically, insulating layers or bypass electrode arrays are required in conventional layouts."

To produce printed features, the researchers first prepare a highly concentrated silver nanoparticle ink. The ink is then extruded through a tapered cylindrical nozzle attached to a three-axis micropositioning stage, which is controlled by computer-aided design software.

When printed, the silver nanoparticles are not yet bonded together. The bonding process occurs when the printed structure is heated to 150 degrees Celsius or higher. During thermal annealing, the nanoparticles fuse into an interconnected structure. Because of the modest processing temperatures required, the printed features are compatible with flexible, organic substrates.

To demonstrate the versatility of the printing process, the researchers patterned both planar and out-of-plane silver microelectrodes; produced spanning interconnects for solar microcell and light-emitting-diode arrays; and bonded silver wires to fragile,
three-dimensional devices.

"Unlike conventional techniques, our approach allows fine silver wires to be bonded to delicate devices using minimal contact pressure," said postdoctoral researcher Bok Yeop Ahn, the lead author of the paper.

"Our approach is capable of creating highly integrated systems from diverse classes of electronic materials on a broad range of substrates," said graduate student Eric Duoss, a co-author of the paper. "Omnidirectional printing overcomes some of the design constraints that have limited the potential of printed electronics.

In addition to Lewis, Ahn and Duoss, the paper's co-authors include chemistry professor Ralph Nuzzo and materials science and engineering professor John Rogers, as well as members of their research groups.

The work was funded by the U.S. Department of Energy.

####

For more information, please click here

Contacts:
James E. Kloeppel
Physical Sciences Editor
217-244-1073


Jennifer Lewis
217-244-4973

Copyright © University of Illinois at Urbana-Champaign

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

Surfing a wake of light: Researchers observe and control light wakes for the first time July 6th, 2015

Tel Aviv/Tsinghua University project uses crowd computing to improve water filtration: The research, a product of the new TAU-Tsinghua XIN Center, was conducted by 150,000 volunteers at IBM's World Community Grid July 6th, 2015

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

A Stretchy Mesh Heater for Sore Muscles July 6th, 2015

Chip Technology

Fundamental observation of spin-controlled electrical conduction in metals: Ultrafast terahertz spectroscopy yields direct insight into the building block of modern magnetic memories July 6th, 2015

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

Nanometrics to Announce Second Quarter Financial Results on July 23, 2015 July 2nd, 2015

The quantum middle man July 2nd, 2015

Discoveries

Fundamental observation of spin-controlled electrical conduction in metals: Ultrafast terahertz spectroscopy yields direct insight into the building block of modern magnetic memories July 6th, 2015

Surfing a wake of light: Researchers observe and control light wakes for the first time July 6th, 2015

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

A Stretchy Mesh Heater for Sore Muscles July 6th, 2015

Announcements

Surfing a wake of light: Researchers observe and control light wakes for the first time July 6th, 2015

Tel Aviv/Tsinghua University project uses crowd computing to improve water filtration: The research, a product of the new TAU-Tsinghua XIN Center, was conducted by 150,000 volunteers at IBM's World Community Grid July 6th, 2015

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

A Stretchy Mesh Heater for Sore Muscles July 6th, 2015

Printing/Lithography/Inkjet/Inks

New technology using silver may hold key to electronics advances July 2nd, 2015

New conductive ink for electronic apparel June 25th, 2015

Leti to Present Solutions to New Applications Using 3D Technologies at SEMICON West LetiDay Event, July 14: Leti Experts also Will Speak at TechXPOT Session on MEMS and STS Session on Lithography Cost-and-Productivity Issues Below 14nm June 22nd, 2015

$8.5M Grant For Developing Nano Printing Technology: 4-D printing to advance chemistry, materials sciences and defense capabilities June 18th, 2015

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