Argonne National Laboratory Center for Nanoscale Materials
An Office of Science User Facility
U.S. Department of Energy

Microscopy Charges Ahead

charge gradient microscopy diagram

Polarization charges in ferroelectric materials are screened by equal amounts of surface charges with opposite polarity under ambient conditions. Researchers from the Center for Nanoscale Materials, Argonne's Nanoscience & Technology and Materials Science divisions, and Tohoku University have shown that scraping, collecting, and quantifying surface screen charges reveals the underlying polarization domain structure at high speed, a technique dubbed charge gradient microscopy (CGM). (more>>)

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