Ute chemist, colleague win physics prize
Joel S. Miller is neither. His title is distinguished professor of chemistry at the University of Utah. Yet he and a fellow researcher who is a physicist and a member of the society are recipients of the 2007 James C. McGroddy Prize for New Materials, to be presented by the American Physical Society when the group meets in Denver, March 5-9, 2007.
The $5,000 prize is to be shared by Miller and his long-time research collaborator, Arthur J. Epstein of Ohio State University. Epstein is a distinguished university professor in the departments of physics and chemistry.
The society's Web site (www.aps.org) notes that the McGroddy Prize is awarded to "recognize and encourage outstanding achievement in the science and application of new materials."
In this case, the new materials are revolutionary: non-metallic material that are as magnetic as metals. The citation notes Miller and Epstein are honored for "discovery and characterization of organic-based magnets, and for observation and study of predictable and previously unknown magnetic phenomena in these fascinating materials leading to fundamentally new science and the demonstrated potential for creative new technologies."
They tried to find organic material that could be used to make magnets.
"The initial thought was this was a formidable if not impossible challenge, because there was no basis for this," Miller said. Or maybe, he added, thinking in magnetic terms, there was a "negative basis" — an indication that it really could not be done.
But they persevered and discovered ways to manipulate non-metals so their "unpaired electrons" would become magnetic. Some of these can be prepared with solvents, so they are not magnetic when dissolved but become magnetic when the solvent evaporates.
They can be deposited as film that is organic and magnetic. "We can make cast films with it," he said. "We can fabricate it in different ways, because of that."
Eventual applications might include new types of data memory storage on disks. An unusual property that could apply, the researchers found, is that the material's magnetism can be controlled through changes in the color of light shone on it.
Other uses could be for sensors or actuators. They may become part of what is called smart materials "that respond to the environment in a way." In a home, when light shines on an object, the magnet may close a door.
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