Libai Huang's femtosecond microscopy method can catch the movement of quasiparticles (VIDEO)
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“So some of the images that we show are initially just a circle, like a pancake, and this pancake just gets bigger and bigger because of the function of time, because the exciton moves around,” said Libai Huang, the Tarpo Professor of Chemistry in Purdue’s College of Science and director of the Quantum Photonic Integrated Design Center (QuPIDC), an Energy Frontier Research Center sponsored by the U.S. Department of Energy. “And there are more extreme versions. Maybe this exciton moves very fast because it’s a polariton. And sometimes they have different ways of moving. If it’s a many-body interaction, and I’m adding more, we can show that I can stop them from moving. It’s as if you’re boarding a bus, and if everyone has a seat, then you will no longer be able to move because you don’t want to sit on top of the other person.”
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Purdue University: Libai Huang
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