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Quarks Influenced by Their Neighborhood
November 20, 2009
The quark structure inside protons and neutrons changes based on the local nuclear environment, according to electron accelerator experiments.
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Xiang Zhang
Xiang Zhang is the Ernest S. Kuh Endowed Chair Professor at the University of California, Berkeley, the Director of NSF Nano-scale Science and Engineering Center (SINAM) and a faculty scientist in the Lawrence Berkeley National Laboratory. He received his Ph.D. from Berkeley in 1996 and was on faculty at The Pennsylvania State University and the University of California, Los Angeles, before joining Berkeley in 2004. Professor Zhang’s current research is focused on nanoscale physics, metamaterials, nanophotonics, and biotechnologies.
Flipping a photonic shock wave
Čerenkov radiation with the emission cone reversed has been observed in a metamaterial with negative refractive index. Read More »