Dr. Ralf Widenhorn is a researcher and professor in the physics department at Portland State University.
Contact:
e-mail: ralfw@pdx.edu 
Office: 314 SRTC
Phone: 503- 725 3898
Mail: Portland State University
Department of Physics 
P.O. Box 751
Portland, OR 97207-0751 

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Digital Sensors

Digital sensors are ubiquitous in today's society and found in place ranging from the Hubble space telescope to cell phones.There are two main types of digital sensors: 
"Charge-Coupled Devices (CCDs)" and "Complementary Metal–Oxide–Semiconductors (CMOS)."  
Dr. Widenhorn studies the performance of these sensors with the goal to understand the 
characteristics better and improve image quality. 

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Teaching

Dr. Widenhorn teaches or supervises the following courses:
General Physics 
Laboratories for General Physics
Workshops for General Physics
Physics Teaching Techniques
Physics in Biomedicine

He is actively engaged in curriculum development for undergraduate physics. Projects include curricula for biomedical physics in applications of physics for life science majors.

Dr. Widenhorn is actively engaged in the community. He works with local high school teacher through the "Partner's in science program", advises the universities' science outreach group, and partners with the Oregon Museum of Science and Technology on projects.

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