News Photos

Caption: Sunlight powers a chemical reaction in the window of Tehshik Yoon, a chemistry professor at University of Wisconsin–Madison. Visible light has major advantages for driving reactions, says Yoon, who has invented a new technique for precisely controlling the shape of products powered by light. The technique could be useful in pharmaceuticals, where correct shape is essential.
Photo: Tehshik Yoon
High-resolution JPEG

Photo use

Photographs are available to media organizations and University of Wisconsin-Madison departments for news, editorial and public relations uses, both print and electronic, that are directly related to UW-Madison. They are NOT available for generic use. For university-related use -- including textbooks, commercial products or advertising -- please contact Bryce Richter, photographer, University Communications, (608) 262-7411 or

Published photos must include a credit ("photographer's name/University of Wisconsin-Madison" or "courtesy of"). The specific credit and other details are also embedded in the digital file, which can be viewed by using Photoshop and selecting "file>file info."

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