Patent application for innovative film - possible Indium Tin Oxide replacement

Nov 10, 2011
Jude Iroh's research has led to a provisional patent application for an innovative film with remarkable properties. Credit: University of Cincinnati

Jude Iroh, professor of materials science and engineering at the University of Cincinnati holds several patents dating to his days as a graduate student. Another may soon be on the way.

On Nov. 5, Iroh filed a provisional patent application with the U.S. Patent Office for a polymer-based film with remarkable properties. The film is highly transparent and electrically conductive. It has potential uses in energy, including applications in solar and . It is economical, easily processed, durable, flexible, and heat resistant.

"Because of its properties, this film is very flexible," Iroh said. "I can envision a very thin solar panel that can be unrolled and applied, perhaps to an automobile, while the sun is shining, then peeled off and stored."

More importantly, Iroh's innovative film has the potential to replace a substance known as ITO, an abbreviation for . While the acronym may be unfamiliar to most consumers, ITO's uses are not. ITO is behind most touch-screen devices like and video kiosks. It appears in flat panel displays, electronic inks, and (LEDs).

ITO is also expensive and rare. It is fragile, lacks flexibility, and it is requires complicated processes to apply. All the major sources of Indium lie outside the United States, lending a strategic value to a suitable replacement for ITO.

Development of the new film grew out of Iroh's work on coatings.

"My initial focus was in composites, particularly laminated composites," he said. "It was for that work that I received my first patents."

After earning his Ph.D. from the University of Connecticut in 1990 and a Post-doctoral stint at Temple University, Iroh accepted a position at the University of Cincinnati as an assistant professor on September 1, 1991. His research attracted the attention of the Office of Naval Research, which asked him to look into coatings to protect metal. Iroh's projects earned acclaim from the Office of Naval Research, and he was named an ONR Young Investigator for 1995-1999. This honor was followed by others. Iroh was selected as the Sigma Xi Young Investigator at the University of Cincinnati for 2001, and was named a Resident Senior Research Associate at the Air Force Research Laboratory for 2002-2003. In 2004 he was elected as a Fellow of the Society for the Advancement of Materials and Process Engineering, SAMPE.

For the naval work, Iroh adapted a laminating process to apply coatings to steel.

"I was using what was then a new class of polymer, intrinsically conducting polymer, and applying it for corrosion prevention measures," he said.

Over the years, Iroh has tackled substantial problems related to coating materials. For example, adding trace amounts of various substances can improve corrosion prevention, but these "dopants" can be lost due to weather, defeating the purpose of the coating. Other coatings are very effective, but must be cured at high temperatures.

"We have found methods to reduce curing temperatures by more than 100 degrees Celsius," Iroh said. "That is very significant."

Effective coatings must meet a wide range of requirements, Iroh said. Cost is a factor, as is ease of application, environmental safety, ability to adhere and impact resistance.

The impact resistance of nanocomposite coatings has opened a fruitful partnership between Iroh's laboratory and Jackson State University, a historically black university in Mississippi. Funded by the Office of Naval Research, Jackson State students are working with Iroh's lab on low temperature systems for high-impact epoxy coatings.

"I would hope to see some of these students return here one day as graduate student," he said.

As Iroh gained more insight into the function of various substances as coatings, it occurred to him that these coating had useful properties, even if they were not coating something.

"A coating is essentially a film. What properties does this film possess?" Iroh said.

It was the question that led to the development of the highly transparent, electrically conductive, polymer-based nanocomposite film.

"This breakthrough will give us a unique place in the broader field of composites and energy research," he said. "This is an exciting development, and I am glad that my research group is very well positioned to continue to make a significant impact in this area."

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User comments : 14

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dschlink
5 / 5 (1) Nov 10, 2011
Another potential use would be defrosting automobile windows.
Callippo
1.8 / 5 (5) Nov 10, 2011
Unfortunately, this film appears nearly as dark as Mr. Iroh. Which could be a problem in racist society, which prefers white transparent films for solar cells and LCD technology wilfully. For example, this ITO replacement appears a much better for me.

http://sciencebus.../?p=6235
powerup1
2.3 / 5 (3) Nov 11, 2011
Unfortunately, this film appears nearly as dark as Mr. Iroh.


@Callippo. Is This a bad joke or a sign of mental illness on your part?
rawa1
1 / 5 (3) Nov 11, 2011
Actually, I do consider this guy as rather silly. He's working on the same polypyrrole - polyimide composite whole years and everyone must see, such film cannot serve as a replacement of ITO film not least a bit.

http://www.ratemy...=1253747
rawa1
1 / 5 (3) Nov 11, 2011
If some people consider my notion of black colour of Mr. Iroh significant with respect to racism, then I could consider the remark about "a historically black university in Mississippi" racistically significant too. I can read quite well between lines of Mr. Iroh's articles and I can recognize the black racist reliably.
powerup1
1 / 5 (1) Nov 11, 2011

http://www.ratemy...=1253747


this is hardly the appropriate forum to take out a personal vendetta on someone.
rawa1
1 / 5 (3) Nov 11, 2011
I never heard of Mr. Jude Iroh before. I just saw his photo, read about collaboration with "black university" and saw dark green film, which was presented as a ITO replacement. It's enough for me.
powerup1
1 / 5 (1) Nov 11, 2011
If some people consider my notion of black colour of Mr. Iroh significant with respect to racism, then I could consider the remark about "a historically black university in Mississippi" racistically significant too. I can read quite well between lines of Mr. Iroh's articles and I can recognize the black racist reliably.


@rawa1/callippo. Do you think it shows a brave face on your part to use multiple anonymous profiles so that you can attack the work of someone without the fear of anyone knowing who you are?
rawa1
1 / 5 (3) Nov 11, 2011
If I can see well, your profile is anonymous, too? And my work is attacked all the time with the people like you. I do believe based on many years experience, I can handle it well - and Mr. Iroh could handle it too. If some people are taking public money for spreading of BS, they should be prepared to face public criticism of anonyms.

BTW I'm not payed from public money not least a bit.
powerup1
1 / 5 (1) Nov 11, 2011
@rawa1/callippo. This article was taken from the UC website and was written by Greg Hand, so that is the person you should have an issue with if you do not like the mention of "a historically black university in Mississippi". But as you imply, you feel that is your job to be a Troll. Have fun :)
rawa1
1 / 5 (4) Nov 11, 2011
PR people at university usually don't wrote the articles about research of individual departments, they're just editing the resources submitted. Not always in sufficiently thorough way, I admit.
Ethelred
3.7 / 5 (3) Nov 11, 2011
of someone without the fear of anyone knowing who you are?
I know who he is. Its not that hard to figure out.

OK I could be wrong but it is highly probable that I know who he is. Just follow some of the links he posts.

Ethelred
rawa1
1 / 5 (4) Nov 11, 2011
it is highly probable that I know who he is
It's highly probable, you have no idea, what you're writing here all the time. This post just documents it.
Ethelred
3.7 / 5 (3) Nov 11, 2011
I know what I write. Would you like me post a set of links?

You lie a lot, so I really don't care what you say, as it can't be trusted.

Ethelred