President Visits Martin Luther King, Jr., Memorial Library VIDEO PODCAST

President George W. Bush and Laura Bush are joined by Washington, D.C. Mayor Adrian Fenty, right, and Ginnie Cooper, Chief Librarian for the Washington, D.C. libraries, left, posing for photos with children and staff at a reading class commemorating Martin Luther King, Jr., Day Monday, Jan. 21, 2008, at the Martin Luther King, Jr., Memorial Library. White House photo by Eric Draper President George W. Bush speaks with volunteers, thanking them for their service, during a visit to the Martin Luther King, Jr., Memorial Library Monday, Jan 21, 2008, in Washington, D.C., in commemoration of Martin Luther King, Jr., Day. White House photo by Eric Draper

President Bush Visits Martin Luther King, Jr., Memorial Library FULL STREAMING VIDEO Martin Luther King, Jr., Memorial Library Washington, D.C. In Focus: African American History 9:42 A.M. EST. PODCAST OF THIS ARTICLE THE PRESIDENT: Thanks for having us. Listen, Laura and I are thrilled to be with you. Proud to be with the Mayor and Councilman Jack Evans. We appreciate very much the Serve D.C. that is working to inspire volunteerism, and I want to thank this beautiful library for hosting us. I just got a couple of comments I want to say. First of all, Martin Luther King Day means two things to me. One is the opportunity to renew our deep desire for America to be a land of promise for everybody, a land of justice, and a land of opportunity. It's also an opportunity to serve our fellow citizens. They say Martin Luther King Day is not a day off, it should be a day on. And so today Laura and I witnessed acts of compassion as citizens were here in the library volunteering their time, and that's what's happening all across America today. But a day on should be not just one day. It really ought to be every day. And our fellow citizens have got to understand that by loving a neighbor like you'd like to be loved yourself, by reaching out to someone who hurts, by just simply living a life of kindness and compassion, you can make America a better place and fulfill the dream of Martin Luther King.

Martin Luther King is a towering figure in the history of our country. And it is fitting that we honor his service and his courage and his vision. And today we're witnessing people doing just that by volunteering their time.

So we're honored to be with you. We're proud to be with you on this important national holiday. Mr. Mayor, thank you for coming. Jack, glad you're here. Appreciate you all taking time out of your day to visit with us.

Thank you.

END 9:44 A.M. EST For Immediate Release Office of the Press Secretary January 21, 2008

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Contact lenses with circuits, lights a possible platform for superhuman vision

Contact lenses with metal connectors for electronic circuits were safely worn by rabbits in lab tests. University of Washington

Movie characters from the Terminator to the Bionic Woman use bionic eyes to zoom in on far-off scenes, have useful facts pop into their field of view, or create virtual crosshairs. Off the screen, virtual displays have been proposed for more practical purposes -- visual aids to help vision-impaired people, holographic driving control panels and even as a way to surf the Web on the go.

The device to make this happen may be familiar. Engineers at the University of Washington have for the first time used manufacturing techniques at microscopic scales to combine a flexible, biologically safe contact lens with an imprinted electronic circuit and lights.

"Looking through a completed lens, you would see what the display is generating superimposed on the world outside," said Babak Parviz, a UW assistant professor of electrical engineering. "This is a very small step toward that goal, but I think it's extremely promising." The results were presented today at the Institute of Electrical and Electronics Engineers' international conference on Micro Electro Mechanical Systems by Harvey Ho, a former graduate student of Parviz's now working at Sandia National Laboratories in Livermore, Calif. Other co-authors are Ehsan Saeedi and Samuel Kim in the UW's electrical engineering department and Tueng Shen in the UW Medical Center's ophthalmology department.

There are many possible uses for virtual displays. Drivers or pilots could see a vehicle's speed projected onto the windshield. Video-game companies could use the contact lenses to completely immerse players in a virtual world without restricting their range of motion. And for communications, people on the go could surf the Internet on a midair virtual display screen that only they would be able to see. "People may find all sorts of applications for it that we have not thought about. Our goal is to demonstrate the basic technology and make sure it works and that it's safe," said Parviz, who heads a multi-disciplinary UW group that is developing electronics for contact lenses.

A researcher holds one of the completed lenses. University of Washington

The prototype device contains an electric circuit as well as red light-emitting diodes for a display, though it does not yet light up. The lenses were tested on rabbits for up to 20 minutes and the animals showed no adverse effects.

Ideally, installing or removing the bionic eye would be as easy as popping a contact lens in or out, and once installed the wearer would barely know the gadget was there, Parviz said.

Building the lenses was a challenge because materials that are safe for use in the body, such as the flexible organic materials used in contact lenses, are delicate. Manufacturing electrical circuits, however, involves inorganic materials, scorching temperatures and toxic chemicals. Researchers built the circuits from layers of metal only a few nanometers thick, about one thousandth the width of a human hair, and constructed light-emitting diodes one third of a millimeter across. They then sprinkled the grayish powder of electrical components onto a sheet of flexible plastic. The shape of each tiny component dictates which piece it can attach to, a microfabrication technique known as self-assembly. Capillary forces -- the same type of forces that make water move up a plant's roots, and that cause the edge of a glass of water to curve upward -- pull the pieces into position.

The prototype contact lens does not correct the wearer's vision, but the technique could be used on a corrective lens, Parviz said. And all the gadgetry won't obstruct a person's view.

"There is a large area outside of the transparent part of the eye that we can use for placing instrumentation," Parviz said. Future improvements will add wireless communication to and from the lens. The researchers hope to power the whole system using a combination of radio-frequency power and solar cells placed on the lens, Parviz said.

A full-fledged display won't be available for a while, but a version that has a basic display with just a few pixels could be operational "fairly quickly," according to Parviz.

The research was funded by the National Science Foundation and a Technology Gap Innovation Fund from the University of Washington. ###

Contact: Hannah Hickey hickeyh@u.washington.edu 206-543-2580 University of Washington

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