Navigation Links
Sol-gel inks produce complex shapes with nanoscale features
Date:10/11/2007

CHAMPAIGN, Ill. New sol-gel inks developed by researchers at the University of Illinois can be printed into patterns to produce three-dimensional structures of metal oxides with nanoscale features.

The ability to directly pattern functional oxides at the nanoscale opens a new avenue to functional devices. Potential applications include micro-fuel cells, photonic crystals and gas sensors.

The researchers describe the new inks in a paper accepted for publication in the journal Advanced Materials, and featured on its Advances in Advance Web site.

Using this new family of inks, we have produced features as small as 225 nanometers, said co-author Jennifer Lewis, the Thurnauer Professor of Materials Science and Engineering and director of the universitys Frederick Seitz Materials Research Laboratory (FSMRL). Our goal is to get down to 100 nanometer feature sizes.

To create three-dimensional structures, the researchers use a robotic deposition process called direct-write assembly. The concentrated sol-gel ink is dispensed as a filament from a nozzle approximately 1 micron in diameter (about 100 times smaller than a human hair). The ink is dispensed while a computer-controlled micropositioner precisely directs the path. After the pattern for the first layer is complete, the nozzle is raised and another layer is deposited. This process is repeated until the desired shape is produced.

We have opened direct ink writing to a new realm of functional materials, said graduate student Eric Duoss, the papers lead author. Since we print the desired functionality directly, the need for complicated templating and replicating schemes is eliminated.

Unlike previous inks, which require a liquid coagulation reservoir, the newly formulated inks are concentrated enough to rapidly solidify and maintain their shape in air, even as they span gaps in underlying layers.

This gives us the ability to start, stop and reposition the flow of ink repeatedly, providing exquisite control over the deposition process, Duoss said. For example, we can directly pattern defects in three-dimensional structures for use as photonic crystals.

After the structures have been assembled, they are converted to the desired functional oxide phase by heating at elevated temperature. Titanium dioxide, which possesses high refractive index and interesting electrical properties, is one material the researchers have successfully produced.

The researchers ink design and patterning approach can be readily extended to other materials. There are a nearly endless variety of materials to choose from, Lewis said. We envision having a toolbox of inks that can print at the micro- and nanoscale. These inks will be used for heterogeneous integration with other manufacturing techniques to create complex, functional devices composed of many different materials.


'/>"/>

Contact: James E. Kloeppel
kloeppel@uiuc.edu
217-244-1073
University of Illinois at Urbana-Champaign
Source:Eurekalert

Related biology technology :

1. Five Ways to Produce siRNAs
2. Gram Quantities of MAb Produced with Simple Bioreactor in Serum-Free Perfusion Culture Replacing Ascitic Fluid Production
3. Business Plan Contest produces successful grads
4. UW among top biotech patent producers
5. Ethanol producers are at a crossroads
6. UW produces fast and flexible computer chip
7. Alfalight receives $4.7M to produce next generation lasers
8. Companies partner to produce geographic info application
9. Stem cells produce anti-disease protein in brain experiment
10. The more ways to produce stem cells, the better. Thats how science works
11. Ten resolutions that could produce a happy new (tech) year
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/25/2016)... ... May 25, 2016 , ... Founder of ... board-certified in surgery and surgery of the hand by the National Board of ... to going above and beyond in his pursuit of providing the most comprehensive, ...
(Date:5/25/2016)... ... May 25, 2016 , ... Lady had been battling arthritis since ... ligament in her left knee. Lady’s owner Hannah sought the help of Dr Jeff ... surgeon, to repair her cruciate ligament and help with the pain of Lady’s arthritis. ...
(Date:5/24/2016)... ... May 24, 2016 , ... Last week, Callan Capital, ... executives and entrepreneurs, held The Future of San Diego Life Science event at the ... life science community attended the event with speakers Dr. Rich Heyman, former CEO of ...
(Date:5/23/2016)... May 23, 2016 Zimmer Biomet Holdings, Inc. (NYSE ... announced that its Board of Directors has approved the payment ... quarter of 2016. The cash dividend of ... 29, 2016 to stockholders of record as of the close ... are subject to approval of the Board of Directors and ...
Breaking Biology Technology:
(Date:4/28/2016)... India , April 28, 2016 ... Infosys (NYSE: INFY ), and Samsung SDS, a ... that will provide end customers with a more secure, ... services.      (Logo: http://photos.prnewswire.com/prnh/20130122/589162 ) , ... services, but it also plays a fundamental part in enabling ...
(Date:4/26/2016)... -- Research and Markets has announced the ...  report to their offering.  , ,     (Logo: ... forecast the global multimodal biometrics market to grow ... 2016-2020.  Multimodal biometrics is being implemented ... healthcare, BFSI, transportation, automotive, and government for controlling ...
(Date:4/15/2016)... 15, 2016 Research and ... Biometrics Market 2016-2020,"  report to their offering.  , ... , ,The global gait biometrics market is expected ... the period 2016-2020. Gait analysis generates ... be used to compute factors that are not ...
Breaking Biology News(10 mins):