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Energy Engagement Programs is a cross-campus effort of the Precourt Institute for Energy.

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Johanna Nelson Weker

Lead Scientist, SLAC National Accelerator Laboratory

Johanna Nelson Weker is a lead scientist at SLAC National Accelerator Laboratory. Her research focuses on synchrotron-based X-ray characterization of materials and systems far from equilibrium. Her work spans a range of topics including electrochemical energy storage, catalysis, and additive manufacturing. In addition to a leading a vibrant research group, she helps run the transmission X-ray microscopy on beamline 6-2 at SSRL. Dr. Nelson Weker graduated in 2005 with a B.S. in mathematics and physics from Muhlenberg College, a small liberal arts college in Allentown, PA. In 2010, she received a Ph.D. in physics from Stony Brook University on Long Island, NY, where she studied Coherent Diffractive Imaging (CDI) with X-rays, microscopy technique that eliminates the need for X-rays lenses. Since then, Dr. Nelson Weker has been working at the Stanford Synchrotron Lightsource, first as a postdoc using x-rays to study Li-ion batteries under operating conditions and later as a staff scientist in the Materials Science Division at SLAC. Dr. Nelson Weker recently received an Early Career Award from DOE to develop multiscale 3D imaging for battery pouch cells and other flat-geometry samples which do not image well using standard tomography techniques.